Product Description:

Through the adjustment of the He-Ne laser, the length of the resonant cavity is changed, the change of the laser mode is observed and the practical ability of the students is trained. The confocal spherical scanning interferometer is used to allow students to measure the divergence angle of the He-Ne laser. The spectral distribution of the transverse and longitudinal modes is observed directly.

Experiments:

● Confocal spherical scanning interferometer, observe the spectrum distribution of longitudinal and transverse modes, deepen the understanding of physical concepts

● In the simplest possible method. Measure the divergence angle of the He-Ne laser

● The adjustment of an ammonia neon laser with an adjustable front cavity (to change the cavity length of the laser and the curvature of the output lens)

● The divergence angle was calculated with the spot distribution measured on the experimental setup

● Observe the spectral distribution of the longitudinal and transverse modes and measure the transverse mode frequency interval. The longitudinal mode frequency intervals measure the fine constant of the scanning interferometer

●Study on the output polarization of ammonia neon laser

● The relationship between the different resonators and the power