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LPT-9 Serial Experiments of He-Ne Laser

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Product Detail

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Note: oscilloscope not included

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.

 

Specifications 

Description

Specifications

Optical Rail 1m, Hard Aluminum
He-Ne Laser He-Ne Laser with Brewster WindowMirrorsR=1mR=∞, He-Ne Laser Tube Length 270mm,Center Wavelength 632.8nmOutput Power≤1.5mW
Mainbody
Collimating Laser Center Wavelength 632.8nmCenter Wavelength≤1mW
FP-1Confocal Spherical Scanning Interferometer Cavity Length20.56mm,Radius of Curvature of Concave MirrorR=20.56mm Reflectivity of Concave Mirror99%Finesse>100Free Spectral Range3.75GHz
Sawtooth Wave Generator Amplitude of Sinusoidal Wave0-250V DC Offset Voltage Output0-250VOutput Frequency20-50Hz
Optical Components Plane Mirror45°
Optical Power Meter 2μW20μW200μW2mW20mW200mW, 6 Scales
Adjustable Slit Width 0-2mm AdjustablePrecision 0.01mm

Part list

Item # Name

Qty

1 Optical rail

1

2 Collimating source: 2-D adjustable He-Ne laser

1

3 Semi-external cavity He-Ne laser

1

4 He-Ne laser power supply

1

5 Output mirror

1

6 4-D adjustable holder

2

7 2-D adjustable holder

2

8 Alignment aperture

1

9 45° mirror

1

10 Scanning interferometer

1

11 Sawtooth wave generator

1

12 High-speed photo-receiver

1

13 High-frequency cable

1

14 Optical power meter

1

15 Adjustable slit

1

16 Translation stage

1

17 Ruler

1

18 Adjustable holder

1

19 Plane mirror

1

20 Power cord

4

21 Tape measure

1

22 User manual

1


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