Source of optical pumping for high-resolution spectroscopy with semiconductor laser
Abstract
A source of optical pumping for semiconductor lasers used in high-resolution spectroscopy was built on the basis of a frequency-tunable laser diode. This diode is mounted on a heat sink inside a thermostat with temperature regulation and stabilization. Radiation emitted by this diode passes through an objective of an absorption cell containing study material, typically vapor of an alkali metal. Changes in absorption are detected by a photodetector and either chart-recorded or read on a voltmeter. Source of optical pumping was tested for total error in spectroscopy of the D2-line in the absorption spectrum of 133(Cs), and was found to be suitable for semiconductor lasers operating in the 700 to 900 nm and 1300 to 1700 nm ranges of wavelength. Performance characteristics were found to be better than monochromators with diffraction gratings or standard Fabry-Perot interferometers, being furthermore much smaller and more energy efficient.
- Publication:
-
USSR Rept Phys Math JPRS UPM
- Pub Date:
- July 1984
- Bibcode:
- 1984RpPhM....R..92B
- Keywords:
-
- High Resolution;
- Laser Pumping;
- Semiconductor Lasers;
- Spectroscopy;
- Absorption Spectra;
- Aluminum Gallium Arsenides;
- Gratings (Spectra);
- Laser Modes;
- Photometers;
- Tunable Lasers;
- Lasers and Masers