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US 4,734,910 AGranted
Self mode locked semiconductor laser diode
AssigneeBell Communications Research, Inc.
InventorHossein Izadpanah
Life of this patent
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Abstract
A semiconductor laser diode which operates in an extended optical cavity in conjunction with a negative resistance device such as a Gunn diode for sustained mode-locked operation. The circuit is capable of generating high repetition rate picosecond optical pulses and is suitable for monolithic or hybrid implementation.
Claims9
A self mode-locked laser system comprising:
- a semiconductor laser diode having a first facet and a second facet, optical radiation being emitted from said second facet when said diode is driven;
- an optical system disposed to reflect at least a portion of said optical radiation back into said diode thereby inducing self-coupling in said laser to generate an oscillating light pulse;
- and
- an electronic gain means coupled to said laser for controlling said oscillating light pulse in said laser to produce sustained steady-state oscillation, thereby made locking said laser.
1 more element
Dependencies are inferred from the claim text.