Narrow linewidth lasers for gas sensing in TO-can package
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NEL's DFB lasers are already being used vastly in gas sensing applications. The most common package type used is the butterfly package with pigtailed fibre output. The advantage is the temperature stabilisation with the integrated thermo-electric cooler and thermistor together with the high reliability hermetic packaging of the DFB laser chip.
Now NEL have developed a TO-can package combining these features with the possibility to employ the laser in industrial free-space applications. These narrow line-width lasers are used in tunable diode laser spectroscopy (TDLS) to identify individual gases in mixtures of gases.
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- The integrated thermo-electric cooler allows temperature tuning and stabilization of the laser wavelength to the desired absorption line.
- Distributed feedback (DFB) laser for tunable diode laser spectroscopy (TDLS) Available wavelengths range between 1260 nm and 2350nm