Ultra-broadband infrared luminescence of Bi-doped thin-films for integrated optics.
Ultra-broadband infrared luminescence has been observed in bismuth (Bi)-doped germanate thin-films prepared by pulsed laser deposition. The films are compatible with various types of substrates, including conventional dielectrics (LaAlO(3), silica) and semiconductors (Si, GaAs). The emission peak position of the films can be finely tuned by changing oxygen partial pressure during the deposition, while the excitation wavelength locates from ultra-violet to near-infrared regions. The physical mechanism behind the observed infrared luminescence of the Bi-doped films, differing from that of the as-made glass, is discussed.
Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
Beibei
B
Xu
Jianhua
J
Hao
Shifeng
S
Zhou
Jianrong
J
Qiu
D004867:Equipment Design; D019544:Equipment Failure Analysis; D007259:Infrared Rays; D008163:Luminescent Measurements / Q000295:instrumentation* / Q000379:methods*; D008567:Membranes, Artificial; D055096:Optical Devices; D018511:Systems Integration
D008567:Membranes, Artificial