Reliable QCW diode laser arrays for operation with high duty cycles

Heiko Kissel; Wilhelm Faßbender; Jens Lotz; Kim Alegria; Tobias Koenning; Dean Stapleton; Steve Patterson; Jens Biesenbach

doi:10.1117/12.2004399

26 February 2013 Reliable QCW diode laser arrays for operation with high duty cycles

Heiko Kissel, Wilhelm Faßbender, Jens Lotz, Kim Alegria, Tobias Koenning, Dean Stapleton, Steve Patterson, Jens Biesenbach

Author Affiliations +

Proceedings Volume 8605, High-Power Diode Laser Technology and Applications XI; 86050V (2013) https://doi.org/10.1117/12.2004399
Event: SPIE LASE, 2013, San Francisco, California, United States

Abstract

We present performance and reliability data of high-brightness QCW arrays with a custom, compact and robust design for an operation with high duty cycles. The presented designs are based on single diodes consisting of a 1cm laser bar that is AuSn soldered between two CuW submounts. Arrays of up to 15 diodes as well as one single diode are connected to ceramic base plates on different heat sinks. The available optical output power is shown to be strongly depending on the wavelength and fill factor of the laser bars as well as on the duty cycle, the base plate temperature and the thermal conductivity of the applied ceramic materials. Operation at increased heat sink temperatures up to 45°C is possible without active water cooling or conduction cooling with the help of Peltier elements. Using an array of 15 bars at 980 nm with 20% fill factor and 2 mm cavity on standard ceramics, we can reach an optical output power of 1150 W at 45°C base plate temperature operating the array with 15 Hz and 15% duty cycle. Novel materials allow for more efficient operation and higher optical output powers.

Citation Download Citation

Heiko Kissel, Wilhelm Faßbender, Jens Lotz, Kim Alegria, Tobias Koenning, Dean Stapleton, Steve Patterson, and Jens Biesenbach "Reliable QCW diode laser arrays for operation with high duty cycles", Proc. SPIE 8605, High-Power Diode Laser Technology and Applications XI, 86050V (26 February 2013); https://doi.org/10.1117/12.2004399

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