Title :
Sub-bandgap detection using extremely nondegenerate two-photon absorption
Author :
Hagan, David J. ; Fishinan, D.A. ; Webster, Scott ; Cirloganu, Claudiu M. ; Van Stiyland, E.W.
Author_Institution :
CREOL: Coll. of Opt. & Photonics, Univ. of Cential Florida, Orlando, FL, USA
Abstract :
Femtosecond gated detection of low power mid-IR radiation using ultraviolet gating pulses in a GaN detector at room temperature is demonstrated by utilizing two-to-three orders of magnitude enhancement from nondegenerate two-photon absorption.
Keywords :
III-V semiconductors; gallium compounds; high-speed optical techniques; infrared detectors; photodetectors; photoexcitation; two-photon processes; wide band gap semiconductors; GaN; extremely nondegenerate two-photon absorption; femtosecond gated detection; low power mid-IR radiation; sub-bandgap detection; temperature 293 K to 298 K; ultraviolet gating pulses; Photonics;
Conference_Titel :
Photonics Conference (PHO), 2011 IEEE
Conference_Location :
Arlington, VA
Print_ISBN :
978-1-4244-8940-4
DOI :
10.1109/PHO.2011.6110602
