Abstract

An analytical, three-dimensional, steady-state thermal model of a high-power diode laser bar is presented in this paper. The heat spreading angle in a laser bar heat sink, subjected to several convective conditions on the bottom-side, was calculated with this model. Thermal design curves for the heat sink and submount are also presented. Special discussion is presented for two kinds of our conduction-cooled laser bars. Finite element simulation and experimental results based on the wavelength shift method are compared with this analytical solution. The familiar 45° angle in thermal design for a commercial hard solder conduction-cooled laser bar was found to lead to a 12% increase in thermal resistance relative to a free lateral diffusion heat sink.

© 2018 Optical Society of America

Full Article  |  PDF Article
More Like This
Three-dimensional thermal model of high-power semiconductor lasers

Di-Hai Wu, Chung-En Zah, and Xingsheng Liu
Appl. Opt. 58(14) 3892-3901 (2019)

Thermal hydraulic performance of a microchannel heat sink for cooling a high-power diode laser bar

Di-Hai Wu, Chung-En Zah, and Xingsheng Liu
Appl. Opt. 58(8) 1966-1977 (2019)

Method for predicting junction temperature distribution in a high-power laser diode bar

Dae-Suk Kim, Caleb Holloway, Bongtae Han, and Avram Bar-Cohen
Appl. Opt. 55(27) 7487-7496 (2016)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (16)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (39)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics