Precise Fiber Couple Laser Light Source

Precise Fiber Couple Laser Light Source User Guide User Guide Document No. AEO-LD1480-0001 1. SAFTEY REQUIREMENT... 2 Precise Laser Light Source Page 1 / 15

1.1 User esponsibility...3 2. Description.. 4 2.1 PRODUCTIOS GENERAL DESCRIPTION... 2.2 Important feature..4 2.3 System Initial Set-up.5 3. PANEL FUNCTION OVERVIEW 3.1 Front Panel Overview......6 3.2 REAR PANEL OVERVIEW 7 3.3 TURNING ON THE SOURCE... 7 4. PC CONTROL LIGHT SOURCE SYSTEM 9 4.1 PC Control Light Source System description 9 4.2 Manual Control Function 9 4.3 PC control function..9 4.4. PC Control Communication Protocol..9 4.4.1 Serial Port Setting.9 4.4.2. Command Structure.10 5. Modulating the Laser Output 11 6. Making the Safety Interlock Connections. 12 7. Specifications 13 CHAPTER 1: SAFTEY REQUIREMENT 2.1 User Responsibility 110 Voltage High voltage inside Precise Laser Light Source Page 2 / 15

To avoid electrical shock, before powering unit, make sure that the protective conductor of the 3-conductor power cord is correctly connected to the protective earth contact of the socket outlet. Improper grounding can cause electric shock resulting in severe injury or even death. Do not operate without cover installed. LASER RADIATION AVOID EXPOSURE TO THE BEAM CLASS 3B LASER PRODUCT 405, 473, 520 nm <25 mw Chapter 2: Description Precise Laser Light Source Page 3 / 15

2.1 Production General Description The AEO Fiber Coupled Laser Sources provide easy coupling and simple control of laser diode driven fiber optics. This 1480 nm Spectrum Stabilized Laser Module provides the user with a powerful and extremely stable laser source that is ideal for optical scientific applications. The AEO-LD1480 is a Class 3B laser product with laser emission at 1480nm and output power levels exceeding 100mW. Extreme care should be taken when operating this unit to avoid potentially hazardous exposure to both eyes and skin. Users should wear eye protection when operating this unit and should avoid exposure to the output beam. These laser sources is a temperature controlled in full output power range. It comes equipped with a thermo-electric cooler to stabilize the output wavelength stabilizes in 1480+0.1nm in whole power from 0~100mw. 2.2 Important feature: This laser light source has a powerful control function both in manual and PC though RS232/USB communication. With this PC Communication function, user can easy integrate it into his auto- Measurement system, such as Raman spectrometer analysis instrument if users select 785nm wavelength output laser light source. 2.3 System Initial Set-up Perform the following steps for the initial set-up. Precise Laser Light Source Page 4 / 15

1. Determine the AC line voltage the unit will be connected to 115 VAC. 2. Locate the unit on a dry, level working surface. 3. Make sure the POWER key switch on the rear of the unit is in the OFF position. 4. Plug the female end of the AC line cord provided into the AC Input Receptacle on the rear of the unit. Plug the male end into a properly grounded AC socket. 5. Connect a Fiber Optic cable to the LASER APERTURE on the front panel of the unit. Chart 3 Panel Function Overview Precise Laser Light Source Page 5 / 15

3.1. Front Panel Overview LED Digital Display LED Indicator Display Status Laser output Power Adjust knob Laser Output FC/PC fiber Optic Connector Laser Emission Turn On/Off switch Display Laser Wavelength (nm) Display Select Switch Press button display power in mw/dbm 3.2. Rear Panel Overview 110V/60Hz AC Power Cord Heat Dissipation Fan USB B Type Connector Precise Laser Light Source Page 6 / 15

Modulation Input 0 to 5 V Max, 50 Ω RS232 Serial Port/Interlock (option) 3.3 Power on the Source SHOCK Figure 2 Rear Panel of Laser Source 110 V High voltage inside. To avoid electrical shock, before powering unit, make sure that the protective power cord is correctly connected to the protective earth contact of the socket outlet. Improper grounding can cause electric shock resulting in severe injury or even death. Do not operate without cover installed. Perform the following steps to turn on the Laser Light Source: Precise Laser Light Source Page 7 / 15

Turn on POWER switch. The unit is ON when the display lights up. On power on initial time, there is 500ms slowly start delay, which is specifically protect diode laser avoid suddenly power up surge current. The diode laser current linearly increases from zero to System Setting Value. If unit Interlock option selected, Make sure the Interlock Input is short-circuited. The default display mode is laser power (mw), and laser thermo-electric cooler is always activated when the unit turns on. Use the Power Adjust Knob to adjust the output power to the desired level. Press the emission button to turn ON/OFF the laser. The LASER ON when emission button to is turn On, and indicator display mw (default), The LASER OFF when emission button to is turn OFF, LED Display displays 0.00000, two indicator LED will light off Press the mw/dbm button to change the display unit : mw or dbm Press the W (nm) button to display laser wavelength for example display: 1480, it means the laser wavelength is 1480 nm. Chapter 4. PC Control Light Source System Precise Laser Light Source Page 8 / 15

4.1 PC Control Light Source System description This light source unit has a powerful PC /manual remote function 4.2 Manual Control Function: The unit default control mode set in manual control, all function can implement on panel push button. 4.3 PC control function: The most important feature of this light source is its PC control ability. In industry intelligent equipment system, the GPIB and RS- 232 are defined as a standard communication port among multiequipment. There are two Control method option: 1. User can use AEO Lasretech Provides user GUI, which is free provided. 2. User can also use HyperTerminal ASC command to control this light Source. With this ASC code command, user can easy integrated this light source to their system, such as Raman spectrometer analysis instrument. The ASC code definition is in 4.3. 4.4. PC Control Communication Protocol: 4.4.1 Serial Port Setting Serial communication with 115200 Baud rate, 8 data bits, 1 stop bit, no parity, no handshake 4.4.2. Command Structure <Command><=><VALUE><&> <Command> are ten ASCII character. Precise Laser Light Source Page 9 / 15

<=> is a separator to separate variable and value. <VALUE> is several decimal numbers in ASCII. There are no space in the Data (Stream). <&> is a separator, which indicate the end of one data structure. Command Define: LdMode_Set: => laser work mode (manual or PC control) LD_Turn_ON: => laser turn on or turn off LdWk_P_Set :=> light source output set power (mw) Example: send a frame data LD_Turn_ON=1& => means laser turn; LD_Turn_ON=0& => means laser turn off; LdMode_Set=0& LdMode_Set=3& Power on default: mean: => manual control mean: => PC control manual control LdWk_P_Set=123& means :=> set light source output power = 123(mw) LdWk_P_Set=100& means :=> set light source output power = 100(mw) Precise Laser Light Source Page 10 / 15

Chapter 5 Modulating the Laser Output 5.1 Description The MOD IN input can be used to modulate the laser output, or set the laser output remotely using a small signal source, (maximum is +5V). 5.2 Function Procedure: Step 1. In order to make the light source work in modulation must set output power in 10mW using Laser output Power Adjust Knob, make the drive current is not zero but actually at the threshold current. Step 2. Connect a signal generator or 0 to 5 V signal source to the device( see figure 2 rear panel view) Apply the appropriate signal to the MOD IN input. Signals above approximately 5 V will be clamped by internal circuits. Adjusting the PWR ADJ knob will allow for a DC offset on the modulated output. Adjust the input signal accordingly to avoid clipping the output waveform, which will occur if the unit is driven to its current or power limits. CAUTION Modulation input signal must be less than 5V, Over high voltage may damage the integrated fiber coupled laser! Precise Laser Light Source Page 11 / 15

Chapter 6 Making the Safety Interlock Connections AEO Light Sources are equipped with a remote interlock connector located on the rear panel, see Figure 3. All devices have this feature. In order to enable the laser source, a short circuit must be applied across the terminals of the Remote Interlock connector. In practice this connection is made available to allow the user to connect a remote actuated switch to the connector. The switch, which must be normally open, has to be closed in order for the unit to be enabled. Once the switch is in an open state the laser source will automatically shut down. If the switch returns to a closed condition the laser source return normal work status. All units shipped from AEO Lasetech are configured with a shorting device installed in the Interlock connector. If you are not going to use this feature then you can leave the shorting device installed and the unit will operate normally as described in the procedures above. If you wish to make use of the Interlock feature you will need to Acquire the appropriate connector mate and wire it your remote interlock switch. Precise Laser Light Source Page 12 / 15

lock1 lock2 RS232_RX RS232_TX RS232_RX RS232_TX 1 6 2 7 3 8 4 9 5 J9 11 10 D Connector 9 Figure 4 DB9 female connector pin definition Chapter 7 Specifications Minimum Typical Maximum Wavelength Spectral Line width 1479.9 nm 1480 nm 1480.1nm 0.1 nm (0.07 nm for NL version) 0.15 nm (0.1 nm for NL version) Full Output Power Stability 0 mw 100 mw 120mW 15 min: ±0.01 dbm, 24 hr: ±0.05 dbm (After 1 hr Warm-up at 25 ± 10 C Ambient) Precise Laser Light Source Page 13 / 15

Display Accuracy Setpoint Resolution Adjustment Range ±5% 0.01 dbm ~0 mw to Full Power TEC Stability 0.005 C/ 1 C Operating Temperature Storage Temperature AC Input Modulation Input 0 C to 45 C -10 C to 70 C 110 VAC/ 60 Hz /0.5A 0-5 V = 0 - Full Power, DC or Sine Wave Input Bandwidth< 100Kz Fiber coupler connector Beam Profile Internal Fiber Type Dimensions Weight FC/FC Multi-mode Flat top spatial-output 105 micron core multimode fiber (0.22 NA) L x W X H = 220 x 165 x 55.63 mm (8.661 x 6.496 x 2.19inch) 0.5 KG Precise Laser Light Source Page 14 / 15

Warranty: AEO Lasertech guarantees its products to be free of defects for one year from the date of shipment. During the warranty period, AEO Lasertech will, at its option, either repair or replace products which prove to be defective. Opening, modification and or servicing of this unit is expressly prohibited and will result in nullification of product warranty. This is in lieu of all other guarantees, expressed or implied, and does not cover incidental or consequential loss. Warranty does not cover Catastrophic Optical Damage (COD) caused by 100% retro-reflection of the laser light. If retro-reflection of this magnitude is expected, then an optical isolator is required. Precise Laser Light Source Page 15 / 15