Measurement techniques, selected articles
Abstract
The lithium niobate crystal He-Ne laser power stabilizer is introduced. The working principle of this laser power stabilizer is shown. The laser beam from the output of He-Ne laser after passing through a lithium niobate electric light switch is split into two beams by the beam splitter. One beam is used as the light output and the other beam is used as the signal for feedback circuit. It is sent into the photoelectric tube and then passed through a current-voltage converter, comparative amplifier, and differential amplifier to control the flux of the photoelectric switch. When the power of the laser is increased, the power sampled by the beam splitter also increases to raise the output current signal of the photodiode. This current signal produces a rising voltage signal through the use of a current to voltage converter.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- October 1982
- Bibcode:
- 1982STIN...8320102Y
- Keywords:
-
- Helium-Neon Lasers;
- Laser Outputs;
- Laser Stability;
- Lithium Niobates;
- Beam Splitters;
- Electric Switches;
- Photoelectric Materials;
- Lasers and Masers