Cobolt Dual Combiner. Owners Manual. Cobolt Dual Combiner. March 2013 rev 1.3

Transcription

1 Owners Manual Cobolt Dual Combiner March 2013 rev 1.3 Cobolt Dual Combiner Cobolt AB Phone: info@cobolt.se Vretenvägen 13 Fax: SE Solna Sweden

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3 3 1. General Laser design Laser system description Laser Head Controller Cable Power supply requirements Warning and identification labels Operation instructions Installation startup operation Closedown operation Specifications Optical Operational and environmental requirements Electrical interfaces Mechanical Mechanical outlines Connector drawings & pin assignment Analog connector & interlock connector Power connector Data connector Operation via data port Baud rates and serial port settings Handshaking Control commands Direct control Thermal management Troubleshooting Warranty and maintenance Safety and precaution instructions Declaration of conformity (CDRH model only) Disclaimers Service... 17

4 4 1. General The Cobolt Dual Combiner consists of any combination of two Cobolt DPSS lasers integrated into one compact package and with permanently co-aligned beams. The extreme robustness of the Cobolt lasers combined with proprietary HTCureTM manufacturing technology, allows the Dual Combiner to provide excellent beam overlap and beam pointing stability also in varying ambient conditions. The Cobolt lasers are all continuous-wave diode-pumped solid-state laser devices, operating at fixed wavelengths as defined in the specifications in Section 5. The Cobolt lasers are manufactured into hermetically sealed packages and emit high quality beams with stable characteristics over a wide range of operating conditions. The Cobolt Dual Combiner is designed and manufactured to ensure a high level of reliability. The Cobolt Dual Combiners are intended for stand-alone use in laboratory environment or for integration into analytical equipment for e.g. flow cytometry, fluorescence microscopy and Raman spectroscopy. 2. Laser design The radiation from the Cobolt Dual Combiner is generated by intra-cavity frequency conversion in periodically poled materials. The laser resonators are stabilized with a curved mirror, which provides a beam with excellent mode quality. Each laser beam is expanded in a telescope and emitted through a manual shutter. The residual IR radiation from the pump and the DPSS laser is contained within the laser housing by filtering optics. Each laser assembly is equipped with elements for temperature control of the cavity and pump diode. Each laser is also featured with an optical feed-back loop which ensures long-term power stability of the emitted visual beam. Control signals and drive currents are supplied via an electrical interface. Pump diode Pump focusing optics Laser crystal Nonlinear optical material Photo diode for optical feed-back Lasing head electrical interface nm radiation nm radiation nm radiation Telescope Filter for remaining VIS/IR radaition (<1mW) Cobolt laser design: Blues, Samba, Jive, Fandango and Twist. US Patent 5,986,798, US Patent 6,259,711

5 5 Photo diode for optical feed-back Pump diode Pump focusing optics Lasing Media 1+2 Telescope Filter for remaining IR radaition (<1mW) Lasing head electrical interface 808 nm radiation Laser resonator 491 and/or 532 nm radiation Nonlinear optical element (PPKTP) Cobolt laser design: Calypso and Mambo. US Patent 5,986,798, US Patent pending 3. Dual Combiner system description The Cobolt Dual Combiner systems consist of seven main parts: the Dual Combiner Head, two Controllers (one for each laser wavelength), two Cables and two power supplies. The Cables should always be used to connect the Dual Combiner Head with the Controllers. NOTE: Each individual laser wavelength has its unique Controller and will not operate to specification with mismatched Lasers and Controllers. Cables Controllers Dual Combiner Laser Head Keys (one to each controller) Cobolt Dual combiner system Dual Combiner Laser Head The Dual Combiner Head contains two laser heads. Each of them with pump diode, laser cavity, beam formatting optics and Peltier elements. Each Laser Head gets electrical power and control signals from the Controller via a 26- pin cable. The Dual Combiner Head is CDRH compliant together with the CDRH controller with one key to each controller.

6 Controller The two Controllers supplies driving current and control signals to their dedicated Laser Head inside the Dual Combiner. The operation setpoints of the Controller are specific to each Laser Head and have been fixed during manufacturing. The status of the laser operation is given via LED indicators: POW (green light) Power is supplied. ON (orange light) Laser light is on in constant current mode. LOCK (orange light) Laser light is on and the output power has been locked to setpoint. The laser is operating according to specifications. ERR (red light) An error has occurred. No laser light. The Controller can be configured in two ways (decided at laser purchase): CDRH Controller: A key is supplied to be used to turn on the laser. The laser will be running according to specifications in <2 min. See Section 4.1 for more information. The status of operation is monitored via LED signals. Setting the turn key to its OFF-position puts the laser in stand-by mode. OEM Controller: The Controller is factory set so that no key is needed to turn the laser on. Connecting VDC power supply to the Controller initiates an automatic start-up sequence. The laser will be running according to specifications in <2 min. See Section 4.1 for more information. The operation of the laser can be controlled and monitored via the Data port (supports control commands and analog signals). See Section 8 for further details. When power is supplied to the Controller, regardless of on/off state, the temperature control elements are operating to reach setpoint values. The Controller includes a remote interlock connector, pin 1-2 according to Section 7.1. The connector can be short-circuited with an interlock jumper (included at delivery) for operation of the laser. To make use of the remote interlock as a safety switch, remove the jumper and connect to an external switch. NOTE: when the interlock circuit has been opened during operation, the laser needs to be disconnected from and then reconnected to the power supply in order to start again. Alternatively, it can be re-started using a special sequence of control ommands, see Section 8.3 for further details Cables The Cables connects the Dual Combiner Head to the Controllers. Please make sure to connect the right controller to the right laser connector on the Dual Combiner s head. The standard Cable length is 1 m and minimum bending radius 2 cm. When connected care should be taken not to bend or break any of the 26 pins Power supply requirements Two appropriate Power Supply Units (PSU s) are supplied by Cobolt with the Dual Combiner. The PSUs should be plugged into two properly grounded standard power outlets. The output from those PSUs is 12 VDC/3.75 A (generation 4 controller) or 15 VDC/4.2 A (generation 5 controller). The power supply accepts VAC and Hz. Ripple and noise 1% peak-peak max, 20 MHz bandwidth. For the OEM Controller the accepted voltage

7 7 range is 11 V - 28 VDC Warning and identification labels The Dual Combiner Head clearly displays a warning label that shows the location of the co-aligned laser beams from the aperture and an explanatory label stating the laser safety class compliance of the product. These labels must be visible unless the laser beam is totally enclosed. Hazard Symbol and Aperture Label The Dual Combiner Head and Controllers are also provided with a manufacturer s identification label including a serial number which is unique for each laser system and a certification label, either CDRH or OEM. Manufacturers identification labels: CDRH (L) or OEM (R) The Dual Combiners model number structure, with wavelengths and power levels defined by the two lasers XXXX-XXXX DLC-01- XXXX XXXX-XXX Wavelength1 + Wavelength 2 Power1 + Power2 300/500 = CDRH controller RS-232 communication 400/600 = OEM controller RS-232 communication 700 = CDRH controller USB communication 800 = OEM controller USB communication xxx = OEM customisation

8 8 Placement of labels: Hazard symbol and Aperture Label Manufacturer s identification label Beam attenuator, manual shutter 4. Operation instructions As standard, the Dual Combiner is delivered with the Controllers set in Auto-start mode. As soon as power is supplied to the Controller the temperature control elements are operating to reach set-point values and the laser emission will start when the key-switch (on each controller) is turned on (if not disabled (OEM models)) Installation startup operation 1. Mount the Dual Combiner Head on a suitable heat sink (see Section 9). 2. Ensure that the interlock jumpers are connected. 3. Connect each Controller to its dedicated connector on the Dual Combiner Head with the Cable and fasten screws at both ends. 4. Apply VDC to the power supply connector on each Controller. 5. Each laser now goes through the following start-up sequence: Temperature stabilisation (1-2 min). Status LEDs: POW flashing, then POW goes on. Turn both key switches to start the lasers. Status LEDs: ON goes on. (OEM models starts without using the key switches) The lasers start (light is emitted) in a constant warm-up current constant for 60 sec. Status LEDs: ON goes on. The laser locks to pre-set output power (<2 min) and operates according to specifications. Status LEDs: LOCK goes on. 6. Switching the laser ON/OFF (to/from stand-by mode) via control commands or Direct Control is described under Section Closedown operation 1. Turn off the key switches and disconnect PSUs from mains outlet. 2. Disconnect Controllers from PSUs. 3. Disconnect Controllers from Dual Combiner Head (only required for shipping).

9 9 5. Specifications 5.1. Available Wavelengths Centre wavelength 1 Output power 2 Blues ± 0.3 nm 25 or 50 mw Calypso ± 0.3 nm 25, 50, 75 or 100 mw Fandango ± 0.3 nm 25, 50, 100 or 150 mw Samba ± 0.3 nm 25, 50, 100, 150 or 300 mw Jive ± 0.3 nm 25, 50, 75, 100 or 150 mw Mambo ± 0.3 nm 25, 50, 100 mw Twist ± 0.3 nm 25 or 50 mw 1. The wavelength is fixed with this accuracy, while drift is defined as Wavelength stability. The wavelength is specified in air. 2. The output power can be adjusted from % of nominal power using control commands, see Section 8. Specifications are guaranteed at 100% of nominal power. Recommended power range is %. Power accuracy 5%. 3. Relative to beam position reference pins, see Laser Head drawing under Section Operational and environmental requirements 473 nm, 515 nm 532 nm, 561nm 457 nm, 491 nm, 594 nm Wavelength stability ± 0.02 nm, typical 2 pm over 2 º C and 8 hs Spatial mode TEM00, M 2 <1.1 Spectral linewidth Coherence length <1 MHz (<0.01 pm) >100 m Beam divergence (full angle, 1/e 2 ) <1.2 mrad <1.2 mrad ; 594 nm <1.3mrad Beam symmetry at aperture >0.95 : 1 Beam diameter at aperture (1/e 2 ) 700 ± 50 µm Beam waist location (from exit window) Beam angle accuracy 3 Beam position accuracy 3 20 cm <5 mrad <0.25 mm Beam pointing stability (after warm-up) <10 µrad/ º C (over º C) Noise 20 Hz 20 MHz (pk-pk) <2%, typical <1.5% <3%, typical <2% Noise 20 Hz 20 MHz (rms) 4 <0.25%, typical <0.15% <0.3%, typical <0.2% Long-term power stability (8 hours) 4 <2% <3% Polarization ratio (linear, vertical) >100:1 Residual IR emission Power supply <0.1 mw 12 VDC, 3.75 A (alt. 4.2 A) VDC accepted Power consumption per laser wavelength ( Laser Head + <25 W (typical ~15 W)

10 10 Controller) Calypso 100 mw, Samba 300 mw and Mambo 100mW: < 35 W (typical ~25 W) Maximum laser head heat dissipation per laser wavelength <15 W (typical ~10 W) Calypso 100 mw, Samba 300 mw and Mambo 100mW: < 20 W (typical ~15 W) Maximum Laser Head baseplate temperature Warm-up time, from OFF Ambient temperature, operation Ambient temperature, storage Humidity Ambient Air pressure Shock tolerance, operational Heat sink thermal resistance, Laser Head 50 º C <2 min º C 0-60 º C 0-90% RH non-condensing mbar 60 g (8 ms impact) <0.5 K/W 5.3. Electrical interfaces Interfaces Connector Function Input power Kycon KPJX-45, 4-pin Power supply to Controller Laser Head to Controller HD-sub 26-pin, male Connection to Laser Head Controller to Laser Head HD-sub 26-pin, female Connection to Controller Data port USB-type mini B Control and monitoring via control commands Remote interlock & Analog signals Warm-up time Molex Analog input 5 12 V => laser on Analog input <2.7 V => laser off 2 min 5.4. Mechanical Dimensions: Laser Head Controllers PSU 190x65x46 mm (7.6x2.6x1.8 inches) 190x72x28 mm (7.6x2.9x1.1 inches) 130x55x30 mm (5,2x2.2x1.2 inches) Fixation holes, Laser Head 4,50, spacing 195x55 mm Fixation holes, Controller spacing 51x178 mm Cable (Laser Head Controller) 1 m length, >2 cm bending radius The information presented here is believed to be accurate and is subject to change without notice. The specifications contained herein cannot be guaranteed outside of normal operational conditions.

11 6. Mechanical outlines 11 Dual Combiner Laser Head mechanical outline (dimensions in mm). Analog & interlock connector Data connector Power connector OEM & CDRH Controller mechanical outline. Dimensions in mm [inches].

12 12 7. Connector drawings & pin assignment 7.1. Analog connector & interlock connector Manufacturer Molex , mates with Pin Function 1. Interlock (connect to pin 2 for enable) 2. GND 3. Analog on/off (Direct input) 4. TST (Internal Cobolt use only) LED Laser on (5V) 6. LED Error (5V) 7.2. Power connector Kycon KPJX-4S, mates with Kycon KPPX-4P. Grounded shield. Pin Function 1. 0 V VDC 3. 0 V VDC Front view of controller 7.3. Data connector Connector USB-type, manufacturer Hsuan Mao C BFDSB0, mates with connector mini-b. Pin Function V (in series with internal 10 Ohm resistor) 2. RS-232_TX 3. RS-232_RX 4. Not connected 5. 0 V (GND)

13 13 8. Operation via data port 8.1. Baud rates and serial port settings To communicate with the laser, a communication cable needs to be ordered separately. Each Controller is shipped from the factory with a fixed baud rate (115200). The other serial port parameters are: 8 data bits, 1 stop bit and no parity. Hardware flow control is not supported. Each command to the Controller must be terminated by a carriage return. All commands are case-sensitive. Leading and trailing white space is ignored, but command arguments must be delimited by a single space character (ASCII 32) Handshaking Under no circumstances does the Controller initiate communication; it only transmits characters in response to a message. Every message to the Controller generates a response, either a numerical value or the acknowledgment string OK. In the event that the Controller receives a message that it cannot interpret, it responds: Syntax error: followed by the complete command string (minus the termination character) that caused the error. Every Controller response is terminated by a carriage return (ASCII 13) and a full stop is used with floating numbers Control commands The Dual Combiner is delivered with the Controllers set in Auto-start mode (see section 4.1 for Auto-start sequence description). For system integration the Auto-start sequence can be disabled (some commands require Auto-start disabled). The controller is factory set for RS-232 communication ( -500/-600 model number) or USB communication (-700/800 model number). As long as power is supplied to the Controllers the temperature control elements are always operating to reach set-point values and the laser will be idle waiting for the next command. All arguments are in lower case and separated by a space (ASCII 32). Command Function Argument Returned value ilk? Get interlock state 0 = OK, 1 = Laser ON after interlock Forces the laser into Autostart without checking if autostart is enabled (OEM models). Enable/disable autostart See sect 4.1 for description (OEM models). 0 = disable, 1 = Get autostart enable state 0 = disabled, 1 = enabled l? Get laser ON/OFF state 0 = OFF, 1 = ON l1 l0 Laser ON Requires autostart disabled. Use this command for manual ON (OEM models). Laser OFF Use this command for manual OFF ( OEM models). p? Get set output power Float (W)

14 14 P Set output power Float (W) (e.g. p for 50 mw) pa? Read output power Float (W) i? Get drive current Float (A) Slc Set drive current Float (A) leds? Status of 4 LEDs Int [0:15] Bit 0 = POWER ON Bit 1 = LASER ON Bit 2 = LASER LOCK Bit 3 = ERROR 1 = LED on 0 = LED off f? Get operating fault 0 = no fault 1 = temperature error 3 = open interlock 4 = constant power fault Clear fault Enable/disable direct control See sect 8.4 for description (OEM models). 0 = disable, 1 = Get direct control enable state 0 = disabled 1 = enabled sn? Get serial number 32-bit unsigned integer Hrs? Get system operating hours Get key switch state 0 = disabled, 1 = Enable/disable key switch With the key switch disabled the laser is not CDRH compliant and the laser safety standard no longer applies. 0 = disable, 1 = enable For re-starting one of the lasers in the Dual Combiner, use the key switch. It can also be restarted with control commands after having opened the remote interlock switch, execute cf for clear fault followed to restart the laser. The output power can be adjusted from % of nominal power using the p command. Specifications are guaranteed at 100% of nominal power. Recommended power range is % Direct control The Direct Control feature enables turning the laser ON/OFF using a 5-12 VDC signal. After having configured the Controller for Direct Control operation (factory set or by 1), the laser can only start-up when 5-12 VDC (max 12.5 VDC) is applied to pins 2 & 3 on the analog connector. Shifting the signal to 0 VDC will turn the laser off and put the laser in stand-by mode (status LED:s is POW and not flashing). This input only controls the on/off state of the laser and cannot be used to modulate the power output.

15 15 9. Thermal management To ensure operation within given specifications and for the warranty to be valid, the Dual Combiner Head must be attached to a heat sink providing a thermal resistance of <0.5 K/W. This value is the difference between the maximum allowed Dual Combiner Head base plate temperature (50 º C) and the maximum specified ambient temperature at the air-heatsink interface (40 º C), divided by the maximum power dissipated from the laser (<20 W per laser for the highest power models at highest specified ambient temperature). The mounting surface should be flat (within 0.05 mm over mounting surface). It is recommended to use a thermal heat compound between the Laser Head and the heat sink to provide good thermal contact. For assistance in thermal management and system integration, please contact Cobolt s technical support. 10. Troubleshooting In the unlikely case of a problem occurring, please check first that the controllers are connected to the correct port at the Dual Combiner s head. Next step is to use the table below to help identify the error. Some faults can be fixed remotely. Back reflections into the cavity can cause instability of operation. Isolators are available as an option. In case of a sudden voltage drop the laser will turn itself off and restart. If it is in CDRH configuration it will require that the key is turned on again. Call Cobolt support or your representative to identify corrective action. LEDs Status Explanation Action off flashing POW x Mains power off Check connections POW x Temperatures not stabilised Check if heatsink is sufficient LOCK x Laser can not lock in constant power, Check for back reflections. Contact the factory. current limit has been reached ERROR on Error in laser parameters If lights at start-up check cable connections, if lights >5s after start-up contact the factory. 11. Warranty and maintenance Cobolt provides a system warranty of 24 months after delivery, with unlimited number of operation hours. The Dual Combiner system is designed for modular replacement or repair in the event that a Laser Head or Controller malfunctions. Warranty is invalid if the laser system is operated outside of the specific limits and conditions as outlined in this document. The lasers in Cobolt Dual Combiner are contained in sealed enclosures and should not be opened for any reason. Disassembly of any part of the system (including the cable) means the system no longer complies with the EMC standards will void the warranty. All laser parameters are set at the factory, and there are no adjustments required. Maintenance is limited to wiping dirt off the enclosures and cleaning the aperture. Clean the aperture with a standard photographers lens airbrush.

16 Safety and precaution instructions The Cobolt Dual Combiner is a laser product of two Class IIIB (CDRH), Class 3B (IEC) lasers. Each laser is registered to and compliant with IEC and CDRH 21 CFR, subchapter J, via Laser Notice 50. Cobolt Blues emits up to 50 mw of 473 nm laser radiation, Cobolt Samba emits up to 300 mw of 532 nm laser radiation, Cobolt Jive emits up to 150 mw of 561 nm laser radiation, Cobolt Fandango emits up to 150 mw of 515 nm laser radiation, Cobolt Mambo emits up to 100 mw of 594 nm laser radiation, Cobolt Calypso emits up to 100 mw of 491 nm laser radiation and Cobolt Twist emits up to 50 mw of 457 nm laser radiation. Eye and skin exposure to direct or reflected laser light is hazardous and may be extremely harmful. Always wear eye protection appropriate to the beam wavelength and intensity. The device must be handled by personnel with experience of lasers, in a laboratory environment and with access to adequate laser safety equipment. The Dual Combiner Head clearly displays a yellow warning label that shows the location of the laser beam aperture. This label must be visible unless the laser beam is totally enclosed. Always install the laser system to a properly grounded power outlet. Cobolt lasers contain a laser diode which is sensitive to electrostatic discharge (ESD). The device must be handled in an ESD protected workstation. LASER LIGHT AVOID EXPOSURE TO BEAM CAUTION - use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. 13. Declaration of conformity (CDRH model only) The Cobolt Dual Combiner is designed and manufactured to comply with EC Low Voltage Directive and EC EMC Directive in their standard configuration of Laser Head, Controller, standard 1m cable and supplied with a Cobolt power supply unit. The following harmonized standards are in use: Electrical security: EN , IEC Laser Class: IEC , CFR and EMC: EN 61326/A1/A2/A3, incl EN Class A Cobolt Dual Combiners and lasers are compliant to UL standard: Electrical security: UL

17 17 In addition, Cobolt laser products pass ETC Transport and Vibration Standards including IEC , IEC , IEC , and Shock and Vibration IEC Cobolt lasers are RoHS compliant as defined by the EC Directive 2002/95/EC. Disabling the keyswitch nullifies the CE marking as this violates the laser safety standard. 14. Disclaimers Cobolt will assume no responsibility for damage incurred by faulty customer equipment, such as measurement equipment, cables etc, used in conjunction with Cobolt laser products. Cobolt makes no warranty of any kind with regard to the information contained in this guide, included but not limited to, implied warranties of merchantability and suitability for a particular purpose. Cobolt shall not be liable for errors contained herein nor for incidental or consequential damages from the furnishing of this information. No part in this manual may be copied, reproduced, recorded, transmitted, or translated without the express written permission by Cobolt. 15. Service If the laser does not function, do not attempt to open any of the units, or the warranty will be voided. Call or your local Cobolt representative for consultancy and to request an RMA number (see back cover for contact information). If an RMA number is issued and the laser needs to be shipped back to Cobolt or your local representative, please pack the complete system for shipment using the original package or equivalent. Ensure the unit is free from thermal paste before packing. The warranty covers repair or replacing the unit at the option of Cobolt.

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19 Contact Information Cobolt headquarters Cobolt AB Phone: Vretenvägen 13 Fax: SE Solna info@cobolt.se Sweden Web: Sales representatives Australia Warsash Scientific Phone: Fax: Benelux Laser 2000 Benelux CV Phone: Fax: China China Daheng Group Phone: Fax: China DynaSense Photonics Co. Ltd. Telephone:86-(0) Fax: 86 (0) China New Opto Technology Corporation Telephone: Fax: France Optoprim Phone: Fax: Germany, Austria, Switzerland Von Gegerfelt Photonics Phone: Fax: Italy Optoprim s.r.l. Phone: Fax: India New Age Instruments and Materials Phone: Fax: Japan Kantum Electronics Co Ltd Phone: Fax: Israel Lahat Technologies Ltd. Phone: Fax: Japan Pneum Co, Ltd Japan Telephone: Fax: Poland Amecam Phone:: +48 (22) Fax: +48 (22) Singapore, Malaysia, Thailand Photonitech(Asia) Pte Ltd Phone: Fax: South Korea SM Tech Phone: Fax: Spain & Portugal Laser Technology SI Phone: Fax: Taiwan Tayhwa Technology Co. Ltd Phone: Fax: UK and Ireland Laser Lines Ltd Phone: Fax: USA Cobolt Inc Phone: +1 (408) Fax: +1 (409)