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 Window，Mirrors：R=1m、R=∞, He-Ne Laser Tube Length 270mm,Center Wavelength 632.8nm，Output Power≤1.5mW |
| Mainbody | |
| Collimating Laser | Center Wavelength 632.8nm，Center Wavelength≤1mW |
| FP-1Confocal Spherical Scanning Interferometer | Cavity Length：20.56mm,Radius of Curvature of Concave Mirror：R=20.56mm Reflectivity of Concave Mirror：99%，Finesse>100，Free Spectral Range：3.75GHz |
| Sawtooth Wave Generator | Amplitude of Sinusoidal Wave：0-250V DC Offset Voltage Output：0-250V，Output Frequency：20-50Hz |
| Optical Components | Plane Mirror，45° |
| Optical Power Meter | 2μW、20μW、200μW、2mW、20mW、200mW, 6 Scales |
| Adjustable Slit | Width 0-2mm Adjustable，Precision 0.01mm |
| 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 |