ISC QPD Test Result - InGaAs QPD FCI-Q3000

Document #:

LIGO-T1200063-v2

Document type:

T - Technical notes

Abstract:

Test result of the ISC QPD (InGaAs - FCI-Q3000)

Files in Document:

• QPD_IR_TEST_110927.pdf (file is not accessible)

Other Files:

• QPD_IR.pdf (file is not accessible)
• QPD_IR.xlsx (file is not accessible)
• dark_current_correlation.pdf (file is not accessible)
• dark_current_zero_bias_hist.pdf (file is not accessible)

Topics:

• Basic R&D
• Sensing and Control

Authors:

• Koji Arai
• Chris Mueller

Keywords:

ISC QPD Test Si QPD Q3000

Notes and Changes:

(Notes on 7/27/2019 KA)
dark_current_correlation.pdf
- Distribution of the dark current at 0V bias compared with the dark current at 5V bias.
I knew that the elements which have high dark current was noisy. So the GO/NO-GO criteria based on teh shotnoise for 10nA DC current was applied.

dark_current_zero_bias_hist.pdf
- Histogram of the dark current at 0V bias for the qualified elements.
Mean and Std: 11 +/- 21 pA

Referenced by:

• LIGO-E1200539: aLIGO, ISC, In-Vacuum QPD