Specifications Michelson Interferometer,Mach - Zehnder interferometer and Sagnac interferometer,

F-ZHG2010?? Interferometer Purpose of the experiment and related subjects:?
1. Combination Michelson interferometer
2.Combination Mach - Zehnder interferometer
3.Combination Sagnac interferometer
4.Compare the difference among the three?interferometers and measure the relationship?between air pressure and the refractive index?with interferometers.?
?Features of the instruments:
1.Using semiconductor laser (635nm, 3mW) as the ligh source
2.In this experiment, a mini-optical experimental platform (600 × 400 × 50mm3) is supplied.
3.The chamber length is 10cm, the pressure measureme range is 0-300mmHg.
Complete set of equipment:
Small optical experimental platform, semiconductor laser, beam splitter, reflecting mirror, beam expander mirror, air chamber + pressure gages and etc..