Direct modulation and active mode locking of ultrahigh speed GaAlAs lasers at frequencies up to 18 GHz

Lau, K. Y.; Yariv, A.
February 1985
Applied Physics Letters;2/15/1985, Vol. 46 Issue 4, p326
Academic Journal
It is demonstrated that an ultrahigh speed window buried heterostructure GaAlAs laser fabricated on a semi-insulating substrate can be used as a narrowband signal transmitter in the Ku band frequency range (12-20 GHz). The modulation efficiency can be increased over a limited bandwidth by a weak optical feedback. A stronger optical feedback enables one to actively mode lock the laser diode at a very high repetition rate up to 17.5 GHz, producing pulses ∼12 ps long.


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