Average optical power (YYYY)

> 3.5 W at 4.6 μm, > 2.0 W at 4.0 μm, >1.0 W at 3.8 μm, > 1.5 W at 7.2 μm, >1.5 W at 8.5 μm and > 2.0 W at   9.3 μm.

Mode of operation

Quasi-CW, high duty cycle pulsed   (factory-set)

Output

? Standard: ~   200 ns – 500 ns pulses   with ~ 500 kHz -2.0 MHz repetition rate (~ 50% duty cycle) ? Optional (at   extra cost): Variable duty cycle from 0.05 % to 50 %; Variable pulse   amplitude; Synchronization with external TTL pulse sequence

Wavelength (XX)

? ~3.8 μm, ~4.0 μm, 4.6 μm, 7.1 μm, 8.5 μm and 9.3 μm ? Other   wavelengths between 3.8 μm   and 12 μm may be   custom ordered

Beam Divergence

? 5 mrad   vertical ? 5 mrad   horizontal

Beam quality

Excellent (contact factory for details)

Output beam

? Nearly   collimated with a lens internal to the hermetically sealed QCL package ? Output beam   spot size ~ 4 mm

QCL package

Hermetically sealed for high reliability   in all environments

Laser head size

5.5” (L) x 1.8” (W) x 1.8” (H)

Laser head weight

11 Oz w/o batteries; 14 Oz with   batteries

Power supply

? External: 20   V DC (included) ?   Internal (option): Internal battery operation (4 CR123A batteries included);   Run time dependent on the QCL power selected.