Photodetector with wavelength @ 780nm and 1560nm: Difference between revisions
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=== 3. | === 3. Test circuits === | ||
* 3.1.1 Basic current-voltage transferring circuit for S5971 | * 3.1.1 Basic current-voltage transferring circuit for S5971 | ||
[[File:testcircuit.png|center|thumb|400px|Test Circuit for 780nm Photodetector]] | [[File:testcircuit.png|center|thumb|400px|Test Circuit for 780nm Photodetector]] | ||
Revision as of 22:37, 6 April 2025
Photodetector with wavelength @ 780nm and 1560nm
Team members: Sunke Lan
To design photodetector as power monitor with power within 10mW.
Project Outline
1. Objective
- 1.1 Try to design photodetector for 780nm and 1560nm
- 1.2 Measure optical power up to 10mW( depends on which light we will measure finally) to stabilize the intensity of laser
2. Components
- 2.1 Photodiodes (S5917, G12180-010A), BNC test boards, PCB test boards, op-amp (OP27G) (for target 1)
- 2.2 Oscilloscope, Rotation Mount with Resonant Piezoelectric Motors(ELL 14K), SHG optical system (for target 2)
3. Test circuits
- 3.1.1 Basic current-voltage transferring circuit for S5971
Based on the reference circuit, we changed the biase voltage of photodiode to 1V, and used op-amp OP27E to do the current-voltage transferring.
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