Abstract

Planar waveguide (PW) lasers offer several advantages over their bulk counterparts, such as strong optical confinement providing high gain and low threshold, and excellent thermal management characteristics [1]. This is especially true for laser transitions that suffer reabsorption loss and have relatively weak gain cross sections, such as neodymium’s quasi-four-level (4F3/24I9/2) transition. Our interest in lasers operating on this transition lies in their potential to be upconverted into the blue-green part of the visible spectrum for various applications ranging from display technologies to life-science diagnostics. Nd:YAG is generally considered to be one of the best materials for lasers operating on this transition, however it has several challenging characteristics that have thus far limited high-brightness laser operation in the tens of Watts regime; such as gain competition with the stronger 4-level 4F3/24I11/2 transition, low-brightness pump-sources, and above all detrimental thermally-induced aberrations in the host material. While 15W has been produced from an end-pumped rod laser [2], 25W from a thin-disk [3], and 105 W [4] from the same PW structure as reported here, the brightness of these lasers is significantly lower than that of a few Watts in a diffraction-limited beam. In this work, we discuss the radiance scaling potential of a Nd:YAG PW using an extended stable-resonator configuration.

© 2011 Optical Society of America

PDF Article
More Like This
High-Power and Ultra-Efficient Operation of a 946nm Nd:YAG Planar Waveguide Laser

J. I. Mackenzie and H. E. Meissner
WE5 Advanced Solid-State Photonics (ASSP) 2009

Cryogenically cooled 946nm Nd:YAG laser

SungJin Yoon and Jacob I. Mackenzie
ATu3A.01 Advanced Solid State Lasers (ASSL) 2013

High-power 946-nm Nd:YAG laser longitudinally pumped by a diode bar

W. A. Clarkson, R. L. Koch, K. I. Martin, and D. C. Hanna
CMD4 Conference on Lasers and Electro-Optics (CLEO) 1995

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