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The main target of this work is focused on characterization and measurement of the basic properties of laser emission (laser width) of several VCSEL diode based on GaSb matrix, which are emitting in the infrared region around 4250 cm-1. High resolution Fourier transform Bruker IFS 120 HR spectrometer with maximum resolution 0.003 cm-1 was used for the laser diagnostic research.
The MQW GaInAsSb/AlGaAsSb lasers are monomodal throughout almost the whole temperature range of its operation, and they can be tuned in a wide spectral range. With the combination of the Fourier transform spectrometer and the diode lasers as sources of coherent radiation, we compared the spectra measured with a FTIR spectrometer in its absorption arrangement using a 50 W halogen lamp, with a laser...
The spectrum of formaldehyde was studied in the 4350 - 4361 cm-1 region using photoacoustic detection in combination with a semiconductor GalnAsSb/AlGaAsSb diode laser as a radiation source. This laser operates at laboratory and higher temperatures in the 4342 - 4362 cm-1 region with an output of about 1 mW. The spectrum of formaldehyde was measured photoacoustically and this was compared with other...
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