Use of narrow optical resonances for measuring small displacements and for building gravity-wave detectors
Abstract
The first results of the use of narrow optical resonances for precise measurements of small displacements are reported. The experiments were conducted using an He-Ne laser at a wavelength of 3.39 microns with a methane cell. The nonlinear resonances in methane with a width of 50 kHz and an intensity of about 1 mW were used. A periodic perturbation was supplied to one of the laser cavity mirrors. The absolute sensitivity of the measurements was 6 x 10 to the -6th A along a base of 500 cm.
- Publication:
-
ZhETF Pisma Redaktsiiu
- Pub Date:
- January 1981
- Bibcode:
- 1981ZhPmR..33...85B
- Keywords:
-
- Displacement Measurement;
- Gravitational Wave Antennas;
- Gravity Waves;
- Helium-Neon Lasers;
- Laser Interferometry;
- Optical Resonance;
- Laser Cavities;
- Laser Outputs;
- Methane;
- Michelson Interferometers;
- Mirrors;
- Instrumentation and Photography