TWO-MODE FREQUENCY STABILIZATION OF AN INTERNAL MIRR NM He-Ne LASER |
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| Hatem El-Hennawi, Mohamed Sobee, Mohamed Amer, Osama Terra |
- Abstract:
- A Commercial He-Ne laser was stabilized to about 1 × 10-9 for a two hour measurements and a frequency resettability of about 8.4 × 10-9 for three months of measurements. The stabilization process depends on the two-mode frequency method using the power difference between the two orthogonal linearly polarized modes of the laser as an error signal. A simple and inexpensive feedback circuit has been used to control the heater current, wrapped around the laser cavity to keep the difference in power between the two modes at constant value.
- Keywords:
- two-mode method, laser frequency stabilization, 633 nm He-Ne Laser
- Download:
- IMEKO-TC7-2004-144.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC7
- Event name:
- TC7 Symposium 2004
- Title:
10th Symposium on Advances of Measurement Science
- Place:
- St. Petersburg, RUSSIA
- Time:
- 30 June 2004 - 02 July 2004