We report on an application of a pulsed distributed feedback quantum cascade laser (QCL) for an open path data transmission. A pulse QCL in the 1046 cm(-1) range (28.7 THz) is used as a carrier signal source. The QCL is modulated with 50 ns pulses at repetition rate of 100 kHz, used as a sub-carrier. This sub-carrier is frequency modulated with a low frequency signal with bandwidth of 20 kHz (high quality sound signal).
Title
Line-of-sight data transmission system based on Mid IR quantum cascade laser
Published in
Free-Space Laser Communication Technologies Xx
Series
Proceedings Of The Society Of Photo-Optical Instrumentation Engineers (Spie), 6877
Pages
68770F
Conference
Conference on Free-Space Laser Communication Technologies XX, San Jose, CA, Jan 24, 2008
Date
2008
Publisher
Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa
ISBN
978-0-8194-7052-2