Operation

o QCW operation with the laser head at room temperature (50 ns-500 ns pulsed operation at a pulse repetition rate of 1 MHz-2 MHz)

Wavelength

o Centered at AA, BB, CC and DD wavelengths (user specified)

o Available center wavelengths are 3.8 μm, 4.1 μm. 4.5 μm, 4.8 μm, 6.3 μm,6.8 μm, 7.3 μm, 8.5 μm, 9.5 μm and 10.2 μm.

Output spectrum

o Tunable over the gain bandwidth of the QCLs

o Up to four lasers can be accommodated in the laser chassis; All lasers can be tuned simultaneously or independently across their tuning ranges

Tuning Speed

o 100 ms for entire tuning range for each laser

o 100 ms in case of simultaneous tuning

TTL Gate

o 5V TTL gate output is synchronized with laser tuning

Power output

o Average power output of 100 mW at the center of each QCL tuning curve for a duty cycle of ~ 50%

Power Output Stability

o ±3% pulse-to-pulse; ±2 % average power over hours

Pulse width

o 50 ns to 500 ns

Pulse repetition rate

o Up to 1 MHz (maximum duty cycle 50%)

Pulse trigger

o Internal or external; In external mode any pulse repetition sequence can be generated within 50% maximum duty cycle

Output linewidth

o < 2 nm (<0.3 cm-1) when operated in QCW mode

Output beam

o Collimated with beam divergence of < 5 mrad

Output beam quality

o Nearly diffraction limited (TEM00)

Wavelength Accuracy

o Better than 0.5 cm-1

Wavelength repeatability

o ± 0.5 cm-1 unidirectional

Wavelength Scanning

o Continuous uni or bidirectional; Step to a desired wavelength

Cooling

o Air cooled

Guiding beam

o Red 640nm, 4mW laser aligned with IR beams to assist optical arrangement

Physical Details

o Size: 22 cm (W), 12 cm (H), 39 cm (D)

o Weight: 7 kg

Computer Interface

o USB

Computer Requirements

o Windows XP or later computer with USB 2.0 port

o Software controls laser operation and allows user to select pulse repetition rate for each laser as well as enable/disable individual lasers