Fabry-Perot interferometer – optical resonator modes
Two mirrors are assembled to form a Fabry-Perot interferometer. Using them, the multibeam interference ofa laser’s light beam is investigated.On moving one of the mirrors, thechange in the intensity distributionof the interfeence pattern is studied. This is a qualitative experiment,to study the shape of different lasermodes and compare it with some photosgiven in this description.
- study a fundamental component of lasers
- fascinating patterns emerge in a surprisingly symmetric setup
- learn about a widely used type of interferometer
Lens, mounted, f +20 mm
Optical base plate with rubber feet
He/Ne Laser, 5 mW with holder
Magnetic foot for optical base plate
Adjusting support 35 x 35 mm
Surface mirror 30 x 30 mm
Plane mirror HR> 99%, mounted
Concave mirror OC; r = 1.4 m, T = 1.7%
Interferometer plate with precision drive
Lensholder for optical base plate
Screen, white, 150×150 mm
- Construction of a Fabry-Perot interferometer using separate optical components.
- The interferometeris used to observe different resonator modes within the interferometer.
- Interference
- Wavelength
- Diffraction index
- Speed of light
- Phase
- Virtual light source
- Two-beam interferometer