Title :
Observation of room temperature THz emission based on photoluminescence from Ge
Author :
Kimura, Mitsuteru ; Balasekaran, Sundararajan ; Tanabe, Tadao ; Oyama, Yutaka ; Shibata, Jiro ; Nishizawa, Jun-ichi
Author_Institution :
Fac. of Eng., Tohoku-Gakuin Univ., Tagajo, Japan
Abstract :
Room temperature terahertz (THz) emissions were observed from a single crystalline germanium (Ge) by photoluminescence mechanism. The emission mechanism can be explained by intracenter transition of antimony impurities in n-Ge. The emission spectrum contains two peaks corresponding to the 2Pplusmn rarr1S (T,A) (about 8.28 meV; 149.6mum), and 3P0 rarr1S (T,A) (about 7.45 meV; 166.3 mum) intra-center antimony transitions in n-Ge1.
Keywords :
antimony; elemental semiconductors; germanium; impurities; photoluminescence; terahertz wave spectra; Ge:Sb; antimony impurities; emission spectrum; intracenter antimony transitions; intracenter transition; photoluminescence; room temperature terahertz emission; single crystalline germanium; temperature 293 K to 298 K; Bolometers; Laser excitation; Light emitting diodes; Optical filters; Optical mixing; Photoluminescence; Quantum cascade lasers; Silicon; Temperature; Ultrafast optics;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5416-7
Electronic_ISBN :
978-1-4244-5417-4
DOI :
10.1109/ICIMW.2009.5325709
