A grating-coupled surface-emitting mid-IR optical pre-amplifier was fabricated from a quantum cascade laser wafer and demonstrated >15-dB small signal gain with ASE power <-44dBm. The Bragg grating served as output-coupler, ASE-filter, and wavelength division multiplexer.
© 2004 Optical Society of America
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.5960) Lasers and laser optics : Semiconductor lasers
(250.0250) Optoelectronics : Optoelectronics
(250.5980) Optoelectronics : Semiconductor optical amplifiers
H. Zhang, G. Luo, A. Seetharaman, P. Johnson, and H. Le, "Grating-coupled surface emitting quantum cascade semiconductor optical pre-amplifier," in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference and Photonic Applications Systems Technologies, Technical Digest (CD) (Optical Society of America, 2004), paper CMZ4.