Abstract
The nonunity quantum efficiency (QE) in photodiodes (PD) causes deterioration of signal quality in quantum optical experiments due to photocurrent loss as well as the introduction of vacuum fluctuations into the measurement. In this paper, we report that the external QE enhancement of a PD was demonstrated by recycling the reflected photons. The external QE for an InGaAs PD was increased by 0.01–0.06 from 0.86–0.92 over a wide range of incident angles. Moreover, we confirmed that this technique does not increase backscattered light when the recycled beam is properly misaligned.
© 2018 Optical Society of America
Full Article | PDF ArticleMore Like This
Vernon Julius Cemine, Carlo Mar Blanca, and Caesar Saloma
Appl. Opt. 45(27) 6947-6953 (2006)
Chris Hicks, Mark Kalatsky, Richard A. Metzler, and Alexander O. Goushcha
Appl. Opt. 42(22) 4415-4422 (2003)
Fabio Bergamin, James Lough, Emil Schreiber, Hartmut Grote, Moritz Mehmet, Henning Vahlbruch, Christoph Affeldt, Tomislav Andric, Aparna Bisht, Marc Brinkmann, Volker Kringel, Harald Lück, Nikhil Mukund, Severin Nadji, Borja Sorazu, Kenneth Strain, Michael Weinert, and Karsten Danzmann
Opt. Express 31(23) 38443-38456 (2023)