High-brightness fiber-coupled pump sources at 88X nm and 79X nm

J. Watson; D. Schleuning; H. Winhold; M. Griffin; S. Tolman; R. Pathak; E. Weiss; T. Hasenberg

doi:10.1117/12.809723

23 February 2009 High-brightness fiber-coupled pump sources at 88X nm and 79X nm

J. Watson, D. Schleuning, H. Winhold, M. Griffin, S. Tolman, R. Pathak, E. Weiss, T. Hasenberg

Proceedings Volume 7198, High-Power Diode Laser Technology and Applications VII; 71980U (2009) https://doi.org/10.1117/12.809723
Event: SPIE LASE: Lasers and Applications in Science and Engineering, 2009, San Jose, California, United States

Abstract

Developments in Nd-based lasers pumped on the ⁴I_9/2→⁴F_3/2 transition have led to demands for increased power, brightness, and spectral stability from diode pump sources. We describe the development of fiber coupled diode pump sources that generate >120W of power from a 400μm, 0.22NA fiber at 88Xnm wavelengths. In order to maintain spectral purity at these high powers, we investigated the use of Volume Bragg Gratings to stabilize the wavelength of these multi-bar systems. A detailed study of the trade-offs between facet reflectivity and VBG reflectivity was conducted in order to determine an optimal combination that balances output power and locking range. In complement to the developments in 88Xnm pumping, recent interest in eye-safe fiber lasers have resulted in the development of Tm-doped fiber lasers pumped at 79X wavelengths. We describe the development of fiber coupled products with >80W from a 200μm, 0.22NA fiber, including the use of optimized bar geometries to improve fiber coupling efficiency.

Citation Download Citation

J. Watson, D. Schleuning, H. Winhold, M. Griffin, S. Tolman, R. Pathak, E. Weiss, and T. Hasenberg "High-brightness fiber-coupled pump sources at 88X nm and 79X nm", Proc. SPIE 7198, High-Power Diode Laser Technology and Applications VII, 71980U (23 February 2009); https://doi.org/10.1117/12.809723

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