Title :
Extremely nondegenerate two-photon detection of sub-bandgap pulses
Author :
Cirloganu, Claudiu M. ; Fishman, Dmitry A. ; Webster, Scott ; Padilha, Lazaro A. ; Monroe, Morgan ; Hagan, David J. ; Van Stryland, Eric W.
Author_Institution :
Coll. of Opt. & Photonics, Univ. of Central Florida, Orlando, FL, USA
fDate :
Aug. 28 2011-Sept. 1 2011
Abstract :
Our observation of two-to-three orders of magnitude enhancement of nondegenerate two-photon absorption in direct-gap semiconductors has led to gated detection of subgap femtosecond pulses, e.g. measurement of 200fs 5.6μm pulses in a GaN photodiode.
Keywords :
III-V semiconductors; gallium compounds; high-speed optical techniques; optical variables measurement; photodiodes; semiconductor lasers; two-photon processes; wide band gap semiconductors; GaN; direct-gap semiconductors; magnitude enhancement; nondegenerate two-photon absorption; nondegenerate two-photon detection; photodiode; sub-bandgap pulses; subgap femtosecond pulses; time 200 fs; wavelength 5.6 mum; Absorption; Detectors; Logic gates; Photonic band gap; Photonics; Probes; Ultrafast electronics;
Conference_Titel :
Quantum Electronics Conference & Lasers and Electro-Optics (CLEO/IQEC/PACIFIC RIM), 2011
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4577-1939-4
DOI :
10.1109/IQEC-CLEO.2011.6194090
