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Improved performance of the laserImproved contact structures and reduced waveguiding loss by contact electrodes
Technology Application
fiber optic networksInstrumentation lasersOptical spectroscopy This technology is available for licensing.
Detailed Technology Description
Researchers at UCSB have developed a method of fabricating solid state lasers with embedded structures for improved performance via patterning. The patterned layer(s) may be engineered to act as a mirror, optical confinement layer, grating, wavelength selective element, beam shaping element, etc. for the active layers. The key advantage of this improvement is that it places the photonic crystal layer above the active layer for better performance. Conventional approaches place the photonic crystal layer below the active layer.
Supplementary Information
Patent Number: US7768024B2 Application Number: US2006633148A Inventor: Weisbuch, Claude C. A. | Nakamura, Shuji Priority Date: 2 Dec 2005 Priority Number: US7768024B2 Application Date: 4 Dec 2006 Publication Date: 3 Aug 2010 IPC Current: H01L002906 US Class: 257098 | 257013 | 257079 | 257435 | 257436 | 257E33067 | 257E51021 | 438029 | 438031 | 438032 Assignee Applicant: The Regents of the University of California Title: Horizontal emitting, vertical emitting, beam shaped, distributed feedback (DFB) lasers fabricated by growth over a patterned substrate with multiple overgrowth Usefulness: Horizontal emitting, vertical emitting, beam shaped, distributed feedback (DFB) lasers fabricated by growth over a patterned substrate with multiple overgrowth Summary: Used as a horizontal emitting, vertical emitting, beam shaped, distributed feedback laser. Novelty: Horizontal emitting, vertical emitting, beam shaped, distributed feedback laser includes patterned layers comprising lateral epitaxial overgrowth nitride layers filling holes in respective bottom and top mask layers, and active layer(s)
Industry
Optics
Sub Group
LED/OLED
Application No.
7768024
Others
Background
There is a need to improve the performance of horizontal emitting, vertical emitting, beam shaped and distributed feedback lasers. Traditionally, photonic crystals placed on the surface of the devices have been used to improve performance.
