Thermal lens characterization of a side-pumped Nd:YVO4 laser

Antoniangelo Agnesi; Federico Pirzio; Alessandra Tomaselli; Francesca Bonfigli; Tiziana Marolo

doi:10.1117/12.611068

23 March 2005 Thermal lens characterization of a side-pumped Nd:YVO₄ laser

Antoniangelo Agnesi, Federico Pirzio, Alessandra Tomaselli, Francesca Bonfigli, Tiziana Marolo

Proceedings Volume 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; (2005) https://doi.org/10.1117/12.611068
Event: XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2004, Prague, Czech Republic

Abstract

We present a diode side-pumped Nd:YVO₄ laser emitting up to 11 W CW output power c axis polarized at 1064 nm in a bounce geometry. We employed a 2x4x12 mm³, 6° wedge, 1.1% Nd³⁺ doped slab crystal. We set up a compact 2-mirrors cavity design using a cylindrical high reflectivity mirror (curved in the tangential plane) and several plane output coupler. The optimum total internal reflection angle of the designed bounce geometry, leading to the maximum output power, was measured to be about 3.5°. The overall length of the cavity ranges from 8 to 11 cm depending on the investigated configuration. As much as 11 W CW output power was obtained for approximately 26 W of absorbed pump power at 808 nm, with a slope efficiency up to 50% and a near diffraction limited outpu beam in the vertical direction. An overall M² < 3 was obtained at the maximum output power. We also present a focal thermal lens characterization of the cavity in two different experimental setup. The study was based on a first order dependence of the focal thermal length on the absorbed pump power model f_th∞k/P_abs. Our results are in good agreement with the model and the experimental behaviour of the system confirmed the outcome of the focal thermal lens measurements.

Citation Download Citation

Antoniangelo Agnesi, Federico Pirzio, Alessandra Tomaselli, Francesca Bonfigli, and Tiziana Marolo "Thermal lens characterization of a side-pumped Nd:YVO₄ laser", Proc. SPIE 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (23 March 2005); https://doi.org/10.1117/12.611068

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