Tm:CaGdAlO4: spectroscopy, microchip laser and passive Q-switching by carbon nanostructures

Pavel Loiko; Xavier Mateos; Sun Young Choi; Fabian Rotermund; Christoph Liebald; Mark Peltz; Sophie Vernay; Daniel Rytz; Yicheng Wang; Matthias Kemnitzer; Antonio Agnesi; Elena Vilejshikova; Konstantin Yumashev; Uwe Griebner; Valentin Petrov

doi:10.1117/12.2254043

17 February 2017 Tm:CaGdAlO₄: spectroscopy, microchip laser and passive Q-switching by carbon nanostructures

Pavel Loiko, Xavier Mateos, Sun Young Choi, Fabian Rotermund, Christoph Liebald, Mark Peltz, Sophie Vernay, Daniel Rytz, Yicheng Wang, Matthias Kemnitzer, Antonio Agnesi, Elena Vilejshikova, Konstantin Yumashev, Uwe Griebner, Valentin Petrov

Author Affiliations +

Proceedings Volume 10082, Solid State Lasers XXVI: Technology and Devices; 1008228 (2017) https://doi.org/10.1117/12.2254043
Event: SPIE LASE, 2017, San Francisco, California, United States

Abstract

Absorption, stimulated-emission and gain cross-sections are determined for 3 at.% Tm:CaGdAlO₄. This crystal is employed in a microchip laser diode-pumped at 802 nm. In the continuous-wave (CW) regime, this laser generates 1.16 W at 1883-1893 nm with a slope efficiency of 32% with respect to the absorbed pump power. Using a special "bandpass" output coupler, vibronic CW laser operation up to 2043 nm is achieved. For passive Q-switching of the Tm:CaGdAlO₄ laser-saturable absorbers (SAs) based on CVD-grown graphene and randomly-oriented arc-discharge single-walled carbon nanotubes (SWCNTs) in a PMMA film. The SWCNT-SA demonstrates superior performance. The laser produced a maximum average output power of 245 mW at 1844 nm with a slope efficiency of 8%. The latter corresponds to a pulse energy and duration of 6 μJ and 138 ns, respectively, at a repetition rate of 41 kHz. Using the graphene-SA, 2.8 μJ, 490 ns pulses are obtained at a repetition rate of 86 kHz.

Citation Download Citation

Pavel Loiko, Xavier Mateos, Sun Young Choi, Fabian Rotermund, Christoph Liebald, Mark Peltz, Sophie Vernay, Daniel Rytz, Yicheng Wang, Matthias Kemnitzer, Antonio Agnesi, Elena Vilejshikova, Konstantin Yumashev, Uwe Griebner, and Valentin Petrov "Tm:CaGdAlO₄: spectroscopy, microchip laser and passive Q-switching by carbon nanostructures", Proc. SPIE 10082, Solid State Lasers XXVI: Technology and Devices, 1008228 (17 February 2017); https://doi.org/10.1117/12.2254043

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