How to select a DFB-CW QCLs

Absorption spectra of molecule


Wavelength Gases DFB-QCL
No-lens Built in lens
4.3 μm 12CO2/13CO2 L12004-2310H-C L12004-2310H-E
4.5 μm N2O, CO L12004-2190H-C L12004-2190H-E
4.5 μm N2O L12004-2209H-C -
5.2 μm NO L12005-1900H-C L12005-1900H-E
6.1 μm NO2 L12006-1631H-C L12006-1631H-E
7.2 μm SO3 L12007-1392H-C -
7.4 μm SO2 L12007-1354H-C -
7.8 μm 12CH4/13CH4 L12007-1294H-C

* This table does not guarantee the detection of each gas.


The lens-integrated package for DFB-CW QCLs provides a collimated beam in a sealed housing.

Single phonon resonance-continuum depopulation (SPC) and distributed feedback (DFB) structures realize stable single-mode emission at room temperature.

Line-up document "Devices for Gas Measurement" is now available!

Hamamatsu offers a wide range of light sources and detectors required for optical gas measurement. This document introduces suitable products and application examples for each measurement method.

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