-Instrument Introduction

In the production and application of lasers, we usually need to know the mode condition of the laser first. For example, precision measurement, holographic technology, and other work require lasers with basic transverse mode output, while laser frequency stabilization and laser ranging not only require basic transverse mode but also single longitudinal mode operation of the laser. Therefore, conducting pattern analysis is a fundamental and important performance test for lasers.

-Product Features

·Computer control, interface display, automatic recording of interference spectra

·High resolution, low noise impact

·High sensitivity, fast response photoelectric receiver

·Using a helium neon laser with clear patterns as the light source

·Luminous tuning, stability, and high precision

-Experimental content

1. Master the usage method and principle of confocal spherical scanning interferometer

2. Observe the distribution of transverse and longitudinal modes of the laser, calculate the transverse and longitudinal mode spacing based on the principle, and infer the composition of the modes

3. Observe the different modes of different lasers