Transient thermal tuning properties of single emitters in actively cooled high-power cm-bar arrays

Jens Wolfgang Tomm; Fritz Weik; Axel Gerhardt; Tien Quoc Tran; Jens Biesenbach; Holger Muntz; Gabriele Seibold

doi:10.1117/12.528884

1 June 2004 Transient thermal tuning properties of single emitters in actively cooled high-power cm-bar arrays

Jens Wolfgang Tomm, Fritz Weik, Axel Gerhardt, Tien Quoc Tran, Jens Biesenbach, Holger Muntz, Gabriele Seibold

Proceedings Volume 5336, High-Power Diode Laser Technology and Applications II; (2004) https://doi.org/10.1117/12.528884
Event: Lasers and Applications in Science and Engineering, 2004, San Jose, Ca, United States

Abstract

Transient thermal properties of actively cooled InAlGaAs-based high-power diode laser arrays, so-called 'cm-bars', are investigated for 'low-frequency' pulsed operation with a repetition rate of 0.1-10 Hz. Under these operation conditions the devices experience almost complete thermal cycles between the temperature of the heat sink and the operation temperature typical for continuous wave operation. We analyze the thermal tuning behavior that is governed by the thermal bandgap shift (85%) but substantially modified by pure pressure tuning (15%). During operation further modification arises from inhomogeneous temperature distribution along the 'cm-bar.' Our results offer the possibility specifying optimum operation condition of 'low-frequency' pulsed operation resulting in improved reliability.

Citation Download Citation

Jens Wolfgang Tomm, Fritz Weik, Axel Gerhardt, Tien Quoc Tran, Jens Biesenbach, Holger Muntz, and Gabriele Seibold "Transient thermal tuning properties of single emitters in actively cooled high-power cm-bar arrays", Proc. SPIE 5336, High-Power Diode Laser Technology and Applications II, (1 June 2004); https://doi.org/10.1117/12.528884

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available