Patent · US Expired

Heat spreading layers for vertical cavity surface emitting lasers

US6810064B1 · kind B1 · utility

5Cited by

23References

31Claims

0Family size

Assignee

The Regents of the University of California · US

Inventors

Larry A. Coldren · Lompoc, US
Eric M. Hall · Rochester Hills, US
Shigeru Nakagawa · Tokyo, JP

Key dates

Filing date	Aug 21, 2001
Grant date	Oct 26, 2004
Priority date	—
Expiry date	Oct 22, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH01S5/34306
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A system and a method for reducing the temperature in a vertical-cavity surface-emitting laser (VCSEL) comprising of including at least one heat spreading layer adjecent to one of the reflecting surfaces in a VCSEL. The heat spreading layer has high thermal conductivity allowing heat to bypass said one of the reflecting surfaces, thereby efficiently removing the heat away from the device. This also reduces the serial resistance and the thermal impedance of the VCSEL.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.