Reports 1-1 of 1 Clear search Modify search
takaaki.yokozawa - 15:11 Tuesday 20 April 2021 (16512) Print this report
MCe oplev characterization
Wavelength measurement
Result in Fig.1. 661nm at peak

Power measurement
Input : 0.687mW
Output : 0.556mW

Beam profile
Result in Fig.2.
Images attached to this report
Comments to this report:
takaaki.yokozawa - 6:20 Wednesday 21 April 2021 (16525) Print this report
Thank you for your comments

Beam Profile -> I will consider the optimization of number of frames and integration time
Power measuremet -> I selected 660um for this measurement
tomotada.akutsu - 8:29 Wednesday 21 April 2021 (16522) Print this report
  • Looking at the beam profile, I guess the number of frames 8 is too small. And the exposure time seems not appropriate. Let's revisit the measurements later on.
  • To comfirm things, it might be better to put a description clearly what wavelength was set when the power was measured, as this PD-type power meter is sensitive to the choice of wavelength.

(For taking care of signal-to-noise ratio (SNR) on the beam profile measurement, I guess the gain should be fixed to 1 (or 0 dB), while the exposure time should be properly set to improve the SNR, depending on the profissional sense of the experimentalist (in short, needs to consider in-situ wise).

Search Help