Title :
Pulsed and CW IR detection in wide-gap semiconductors using extremely nondegenerate two-photon absorption
Author :
Pattanaik, Himansu S. ; Fishman, Dmitry A. ; Hagan, David J. ; Van Stryland, Eric W.
Author_Institution :
Coll. of Opt. & Photonics, Univ. of Central Florida, Orlando, FL, USA
Abstract :
We detect both pulsed and CW IR light using uncooled GaN or GaAs photodiodes using extremely-nondegenerate two-photon-absorption (2PA) which shows large enhancement over degenerate 2PA. Urbach-tail absorption limits the signal-to-noise ratio for CW detection.
Keywords :
III-V semiconductors; gallium arsenide; infrared detectors; infrared spectra; light absorption; optical noise; photodetectors; photodiodes; quantum optics; two-photon processes; wide band gap semiconductors; GaAs; GaN; continuous wave infrared light detection; extremely nondegenerate two-photon absorption; gallium arsenide photodiodes; gallium nitride photodiodes; pulsed infrared light detection; signal-to-noise ratio; wide-gap semiconductors; Absorption; Gallium arsenide; Gallium nitride; Laser beams; Logic gates; Power lasers; Semiconductor lasers;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2013 Conference on
Conference_Location :
San Jose, CA
