Spectrometer for Pulsed and CW Lasers
- Pulsed or CW, CO2 Lasers
- 50 lines Covering P and R Branches of CO2 Spectrum
- NEP <30µW or 50nJ
- Dynamic Range >15,000:1
- Other Spectra available (CO, C14O2, etc)
- Other detector types available (eg Si, GaInAs)
The CO2 Laser Spectrometer uses an array of PVF2 Pyroelectric detectors in the focal plane of a grating spectrometer. The detectors are located by computer ray tracing in the precise positions of the various lines in the P and R branches of the CO2 spectrum. Following one shot of the laser, the detectors are accessed sequentially to give a bar chart display in the spectrum. The NEP of 50nJ or 30µW is very low compared to phosphor screen instruments.
With a special type of pyroelectric plastic a speed of response of about 100ns can be achieved so that the time dependence of each of the spectral lines can be output to a multichannel analyser system.
Different arrays can be used such as linear pyroelectric or linear Silicon thus giving a conventional spectrometer or spectrograph readout.