Mode-locked and free running operation of Nd,Gd:CaF2 crystal fiber laser

Václav Kubeček; Milan Jandera; Jan Olšan; Michal Jelínek; Fengkai Ma; Dapeng Jiang; Liangbi Su

doi:10.1117/12.2663785

12 December 2022 Mode-locked and free running operation of Nd,Gd:CaF₂ crystal fiber laser

Václav Kubeček, Milan Jandera, Jan Olšan, Michal Jelínek, Fengkai Ma, Dapeng Jiang, Liangbi Su

Proceedings Volume 12502, 22nd Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics; 1250203 (2022) https://doi.org/10.1117/12.2663785
Event: 22nd Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 2022, Wojanow, Poland

Abstract

Fluoride crystals (CaF₂, SrF₂) doped with neodymium Nd³⁺ and codoped with non-active ions such as Y³⁺, La³⁺, or Gd³⁺ for breaking clusters of active ions, have become interesting active media for diode-pumped mode-locked lasers. They posses broad emission spectra and longer fluorescence lifetime in comparison with widely used crystals such as Nd:YAG or Nd:YVO₄. The crystal fibers grown by several groups in recent years might be attractive for high power operation and possibility of beam guiding. We investigated Nd,Gd:CaF₂ cylinders 10 mm long with diameter of 1.9 mm end pumped by 790 nm LD. In free running regime the wavelength tunability of 41 nm (1040-1081nm) was achieved. In continuously passively mode-locked regime using SESAM the pulses 1.3 ps long at 1065 nm with 2 nm spectral width were generated. The average output power was 200 mW for pump power of 1.6 W. Comparison with operation of standard bulk Nd,Gd:CaF₂ active media is also presented.

Citation Download Citation

Václav Kubeček, Milan Jandera, Jan Olšan, Michal Jelínek, Fengkai Ma, Dapeng Jiang, and Liangbi Su "Mode-locked and free running operation of Nd,Gd:CaF₂ crystal fiber laser", Proc. SPIE 12502, 22nd Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 1250203 (12 December 2022); https://doi.org/10.1117/12.2663785

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