Q-switched mode-locked all-solid-state Tm:LuAG ceramic laser

Chen Chen; Qiang Xu; Rui Sun; Ya'ni Zhang; Cuiping Kang; Mingxia Zhang; Zhen Yuan; Weijun Ling

doi:10.3788/IRLA20190563

Journals >Infrared and Laser Engineering >Volume 50 >Issue 4 >Page 20190563 > Article

Infrared and Laser Engineering
Vol. 50, Issue 4, 20190563 (2021)

Q-switched mode-locked all-solid-state Tm:LuAG ceramic laser

Chen Chen^1,2,3, Qiang Xu^1,3,*, Rui Sun^1,2, Ya'ni Zhang^1,4..., Cuiping Kang¹, Mingxia Zhang², Zhen Yuan² and Weijun Ling²|Show fewer author(s)

Author Affiliations

¹Institute of Physics and Optoelectronics Technology, Baoji University of Arts and Sciences, Baoji 721016, China

²Institute of Laser Technology, Tianshui Normal University, Tianshui 741001, China

³Baoji Engineering Technology Research Center on Ultrafast Laser and New Materials, Baoji 721016, China

⁴School of Arts and Sciences, Shaanxi University of Science & Technology, Xi’an 710021, China

show less

DOI: 10.3788/IRLA20190563 Cite this Article

Chen Chen, Qiang Xu, Rui Sun, Ya'ni Zhang, Cuiping Kang, Mingxia Zhang, Zhen Yuan, Weijun Ling. Q-switched mode-locked all-solid-state Tm:LuAG ceramic laser[J]. Infrared and Laser Engineering, 2021, 50(4): 20190563 Copy Citation Text

show less

Abstract

Using graphene oxide (GO) by vertical growth method as saturable absorber, an all-solid-state Q-switched mode-locked Tm: Lu₃Al₅O₁₂ (Tm: LuAG) ceramic laser with typical 'X' folded cavity was firstly demonstrated . A 790 nm laser diode (LD) was used as the pumping source. When the pumping power was greater than 8 W, the laser entered a stable Q-switched mode-locked state. When the output mirror was 5%, the maximum output power of continuous light was 714 mW, and the oblique efficiency was 4.94%. When the pumping power reached 16 W, the maximum output power of the laser was 200 mW, the corresponding repetition frequency of mode-locked pulse was 108.7 MHz, and the modulation depth of mode locked pulse in Q-switched envelope was close to 100%. The 2 μm ultrashort pulsed laser has important applications in biomedicine and laser communication.

Keywords

graphene oxide saturable absorber modulation depth Q-switched mode-locking Tm:LuAG ceramic laser

$ T=\sqrt{\dfrac{4{{\sigma \tau }_{f}}{{\lambda }_{P}}{{P}_{in}}\left[ 1-\exp \left( 1-{{\alpha }_{p}}L \right) \right]\times {{\delta }_{0}}}{\pi hc\left( \bar{W}_{p}^{2}+W_{0}^{2} \right)}}-{{\delta }_{0}} $

(1)