Introduction of the Industry's Broadest Tunable Quantum Cascade Lasers. February Block Engineering 1

Introduction of the Industry's Broadest Tunable Quantum Cascade Lasers February 2014 2014 Block Engineering 1

Widely-Tunable QCL Products LaserTune Mini-QCL Smallest widely-tunable QCL source Embedded software, numerous features Widely-tunable OEM module Ideal for handheld applications LaserScan Handheld for portability in the field or plant Standoff chemical detection & identification Stationary configuration for in-line inspection February 2014 2014 Block Engineering 2

QCL Technology QCL material (typically) is deposited in very thin layers to form laser substrate Electric field is applied to chip as electrons pass through layers photons are emitted Light of single wavelength is emitted from laser cavity (see next slide) as it becomes resonant within laser waveguide Energy Level Diagram QCL Chip Construction February 2014 2014 Block Engineering 3

External Cavity Laser Broad-band light is emitted from QCL chip and collimated onto diffraction grating Grating angle selects single wavelength which couples back into QCL chip Wavelength is amplified via resonance and emitted through output lens LASER = Light Amplification through Stimulated Emission of Radiation Laser output Output Lens Quantum Cascade Chip Laser Cavity Lens Diffraction Grating Laser Cavity Rotation Center point February 2014 2014 Block Engineering 4

Gap-Free Tuning Range Block is Industry Leader in Contiguous mid-ir Spectral Coverage Typical Tuning Curve for 40 nsec pulse @ 4% duty cycle February 2014 2014 Block Engineering 5

QCL Applications Materials Characterization Surface Analysis Liquid/Gas/Solid Detection Chemical/Biological Threats ULTRA- WIDELY TUNABLE Infrared Microscopy IR Countermeasures Remote Sensing HIGH POWER QCL Type NARROWLY TUNABLE Gas Sensing Spectroscopy Applications February 2014 2014 Block Engineering 6

Block QCL Product Line Feature Benefit Wide, contiguous mid-ir tuning Numerous chem / bio applications LaserTune LaserScope LaserScan Integrated one-box design High spectral radiance Small footprint, ready to go in minutes Sensitive, high quality results Small spot size (2 x 4 mm oval) Eye-safe, long path measurements Collimated laser beam Superior spatial resolution LaserScope LaserScan Thermo-electrically cooled MCT No Liquid Nitrogen (LN2) hassle LaserScan Optimized for standoff analysis Non-contact, non-destructive February 2014 2014 Block Engineering 7

LaserTune QCL Source Key Features Industry-leading gap-free tuning range λ 5.4 12.2 µm (Δν > 1000 cm -1 ) Configure with up to 4 internal laser modules Fastest tuning (sweeps 25 cm -1 /msec) Excellent beam pointing stability Single-box fully-integrated solution Smallest Widely-Tunable mid-ir QCL Source Flexible user-friendly interface February 2014 2014 Block Engineering 8

LaserTune User Interface Internal Modes Manual Control Programmable Step Tune Programmable Sweep Tune Arbitrary Step Tune Settings Pulse Parameters Width, rep-rate, current Thermal Control Flexible and User-Friendly Triggering Selection Internal and external External pulse control February 2014 2014 Block Engineering 9

Mini-QCL OEM Module Key Features Industry-leading gap-free tuning range λ 5.4 12.2 µm (Δν > 1000 cm -1 ) Smallest Widely-Tunable QCL Module Configure with up to 4 internal laser modules Fastest tuning (sweeps 25 cm -1 /msec) Excellent beam pointing stability Compact and flexible control electronics Ideally suited for handheld applications February 2014 2014 Block Engineering 10

OEM System Configurations Extreme Tunability and Flexibility February 2014 2014 Block Engineering 11

LaserScan QCL Spectrometer Key Features Industry-leading gap-free tuning range λ 5.4 12.2 µm (Δν > 1000 cm -1 ) Handheld Stationary Configure with up to 4 internal laser modules Standoff analysis from distances of 6 inches to 2 feet Eye safe laser operation Stationary system for fixed point analysis In-line inspection & quality control Standoff Mid-IR Reflection Spectrometer Handheld system in development for portable field and plant use Pharma cleaning validation Surface contamination detection February 2014 2014 Block Engineering 12

Thank You! February 2014 2014 Block Engineering 13