Vertical cavity laser faceplate with diffraction grating

Details Vertical cavity laser faceplate with diffraction grating Vertical cavity laser faceplate with diffraction grating

2008-01-22

2010-10-26

Harvey, Minsun (Department: 2828)

Coherent light generators

Particular resonant cavity

Specified cavity component

C372S070000, C372S075000, C372S099000

Reexamination Certificate

active

07822095

ABSTRACT:
A laser having a laser cavity is disclosed that does not require conventional dielectric mirrors or as-grown reflectors. Instead, a diffraction grating and total internal reflection system is used to define a laser cavity. Within the laser cavity, the laser emission travels in a zigzag pattern. The diffraction grating provides a highly reflective “mirror” diffracting beams at a forward angle and back angle that “tunes” the process of total internal reflection. The diffraction grating also directs a small percentage of the incident radiation approximately normal to the upper face of the semiconductor (more generally, at an angle less than the critical angle), to provide an output laser beam. The laser can be used in an electron tube and laser display system.

REFERENCES:
patent: 5461637 (1995-10-01), Mooradian et al.
patent: 2003/0151348 (2003-08-01), Tiberi
patent: 2005/0135453 (2005-06-01), Kneissl et al.
patent: 2006/0163998 (2006-07-01), Tiberi et al.
patent: 2006/0227833 (2006-10-01), O'Daniel et al.
patent: 2007/0230543 (2007-10-01), Erlandson et al.
International Search Report and Written Opinion in counterpart PCT application No. PCT/US08/51621, dated Jul. 8, 2008.

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