Research Project
Grant-in-Aid for Young Scientists (B)
Responsivity evaluation technique of CCD image sensors and an optical attenuation method applicable for high power lasers were developed to realize an image sensor-based laser power meter. Investigation of pixel to pixel uniformity of responsivity of Si-CCD sensors revealed strong dependence on exposure time and laser wavelength. Proposed optical attenuator utilizing re-coupling of evanescent wave allowed attenuation of 10 W, φ3 mm laser beam down below -70 dB being easily controllable with the gap between two prisms. Incident beam profile was saved through the strong attenuation process. The attenuator and sensitivity-evaluated CCD were assembled to construct the imaging power meter and applied to laser power measurement.
All 2019 2018 2017 2014 2013
All Journal Article (2 results) Presentation (6 results) Patent(Industrial Property Rights) (3 results) (of which Overseas: 1 results)
Proceedings of NEWRAD 2014
Volume: 2014 Pages: 279-280
Proceedings of LAMP 2013
Volume: #13-094: A058 Pages: 1-4
