- Instrument Overview
In the production and application of lasers, it is often necessary to first determine the laser’s mode state. For instance, applications such as precision measurement and holography require lasers that emit a fundamental transverse mode, while laser frequency stabilization and laser ranging require lasers that operate not only in the fundamental transverse mode but also in a single longitudinal mode. Therefore, mode analysis is a fundamental and critical performance test for lasers.
- Product Features
· Computer-controlled, with graphical interface and automatic recording of interference patterns
· High resolution with minimal noise interference
· High-sensitivity, fast-response photodetector
· Utilizes a helium-neon laser with clear mode structure as the light source
· Easy-to-adjust, stable, and high-precision optical path
- Experiment Content
1. Master the operating procedures and principles of the confocal spherical scanning interferometer
2. Observe the distribution of transverse and longitudinal modes in the laser; calculate the transverse and longitudinal mode spacing based on the principles, and thereby infer the mode composition
3. Observe the different modes of various lasers