Reliable pump sources for high-energy class lasers

Martin Wölz; Agnieszka Pietrzak; Alex Kindsvater; Jürgen Wolf; Jens Meusel; Ralf Hülsewede; Jürgen Sebastian

doi:10.1117/12.2178020

12 May 2015 Reliable pump sources for high-energy class lasers

Martin Wölz, Agnieszka Pietrzak, Alex Kindsvater, Jürgen Wolf, Jens Meusel, Ralf Hülsewede, Jürgen Sebastian

Author Affiliations +

Proceedings Volume 9513, High-Power, High-Energy, and High-Intensity Laser Technology II; 95130E (2015) https://doi.org/10.1117/12.2178020
Event: SPIE Optics + Optoelectronics, 2015, Prague, Czech Republic

Abstract

High-energy class laser systems operating at high average power are destined to serve fundamental research and commercial applications. System cost is becoming decisive, and JENOPTIK supports future developments with the new range of 500 W quasi-continuous wave (QCW) laser diode bars. In response to different strategies in implementing high-energy class laser systems, pump wavelengths of 880 nm and 940 nm are available. The higher power output per chip increases array irradiance and reduces the size of the optical system, lowering system cost. Reliability testing of the 880 nm laser diode bar has shown 1 Gshots at 500 W and 300 μs pulse duration, with insignificant degradation. Parallel operation in eight-bar diode stacks permits 4 kW pulse power operation. A new high-density QCW package is under development at JENOPTIK. Cost and reliability being the design criteria, the diode stacks are made by simultaneous soldering of submounts and insulating ceramic. The new QCW stack assembly technology permits an array irradiance of 12.5 kW/cm². We present the current state of the development, including laboratory data from prototypes using the new 500 W laser diode in dense packaging.

Citation Download Citation

Martin Wölz, Agnieszka Pietrzak, Alex Kindsvater, Jürgen Wolf, Jens Meusel, Ralf Hülsewede, and Jürgen Sebastian "Reliable pump sources for high-energy class lasers", Proc. SPIE 9513, High-Power, High-Energy, and High-Intensity Laser Technology II, 95130E (12 May 2015); https://doi.org/10.1117/12.2178020

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