Photodetector with wavelength @ 780nm and 1560nm: Difference between revisions

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=== 1. Objective ===
=== 1. Objective ===
* 1.1 Try to design photodetector for 780nm and 1560nm
* 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. Components ===
* 2.1 Photodiodes (S5917, G12180-010A), BNC test boards, PCB test boards, op-amp (OP27G) (for target 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)
 




Revision as of 13:35, 27 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

  • Try to design photodetector for 780nm and 1560nm

2. Components

  • Photodiodes (S5917, G12180-010A), BNC test boards, PCB test boards, op-amp (OP27G) (for target 1)


3. Test circuits

  • 3.1.1 Basic current-voltage transferring circuit for S5971
Test Circuit for 780nm Photodetector

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.

the side with PD
the side with basic lump elements

4. Testing and Results

4.1 Test Circuit

4.2 Data and Analysis

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