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Fabry Perot resonator - Fabry Perot mode analyzer

Fabry Perot resonator - Fabry Perot mode analyzer

VP5.8.5.4

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This experiment/set up contains dangerous goods.
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Description

A Fabry Perot resonator is formed by two mirrors aligned parallel to each other. The resulting cavity changes transparency when the distance of the mirrors is changed by a multiple of half the wavelength. Scanning the length of the cavity creates a high resolution spectrometer.
Experiment P5.8.5.4 shows an open frame scanning Fabry Perot. As scanner a Piezo element and as probe a two mode Helium Neon laser is used. The mode spectrum of the Helium Neon laser is displayed on an oscilloscope and the characteristic parameter like finesse, free spectral range, resolution and contrast are measured and discussed. Additional components for beam expansion are used to investigate the effect of technical Finesse. Additional mirrors are used to show the difference of a plane and confocal Fabry Perot arrangement.

Components of equipment sets

1	474104 8	Focussing Optics, f = 60 mm
1	4741404	Lens f = 150 mm, C25 Mount and Plate
1	474140	Beam expander lens, adjustment holder
1	4745213	Achromat f = 20 mm, C25 mount
1	4745234	Laser Mirror, flat, M16 mount
1	4745235	Laser Mirror, R = 75 mm, M16 Mount
1	4745236	Laser Mirror, R = 100 mm, M16 Mount
1	4745237	Laser Mirror, flat, M12 Mount
1	4745238	Laser Mirror, R = 75 mm, M12 Mount
1	4745239	Laser Mirror, R = 100 mm, M12 Mount
1	474113 8	Laser Mirror Adjustment Holder, left
1	474317	Piezo Actuator Controller
1	474139	Piezo Element with Adjustment Holder
1	522561 4	Function generator P
2	50102 8	BNC cable, 1 m
1	501091 8	BNC T adapter
1	57524 4	Screened cable, BNC/4 mm Plug
1	474306	Photodetector signal conditioning box
1	474108	SiPIN photodetector
1	4745464 8	Oscilloscope, Dual Channel, Digital
1	474303 8	HeNe Laser High Voltage supply, adjustable
1	4745421	HeNe Pilot Laser Ø 30 mm
1	4745445	Profile Rail 1000 mm
2	474210	Mounting plate Ø 30 mm, carrier 20 mm
1	474122	Optics cleaning set
1	6719700 4	Ethanol, absolute, 250 ml Danger H225 H319
2	474251 8	Transport and Storage Box #01
1	4747103 4	LIT-print: Fabry Perot Resonator
2	471828 4	* Adjustment goggles for He-Ne-laser

Articles marked with * are not essential, we do however recommend them to carry out the experiment.

Experiment Instructions

PDF (Experiment description)

P5.8.5.4 Fabry Perot resonator

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Fabry Perot resonator - Fabry Perot mode analyzer

Description

Components of equipment sets

Experiment Instructions

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