Polarized spectroscopy and SESAM mode-locking of Tm,Ho:CALGO | Zendy

Yicheng Wang | Zendy; Pavel Loiko | Zendy; Yongguang Zhao | Zendy; Zhongben Pan | Zendy; Weidong Chen | Zendy; Mark Mero | Zendy; Xiaodong Xu | Zendy; Jun Xu | Zendy; Xavier Mateos | Zendy; Arkady Major | Zendy; Mircea Guină | Zendy; Valentin Petrov | Zendy; Uwe Griebner | Zendy

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Polarized spectroscopy and SESAM mode-locking of Tm,Ho:CALGO

Author(s) -

Yicheng Wang,

Pavel Loiko,

Yongguang Zhao,

Zhongben Pan,

Weidong Chen,

Mark Mero,

Xiaodong Xu,

Jun Xu,

Xavier Mateos,

Arkady Major,

Mircea Guină,

Valentin Petrov,

Uwe Griebner

Publication year - 2022

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.449626

Subject(s) - optics , materials science , laser , slope efficiency , spectroscopy , wavelength , ion , dopant , doping , mode locking , fiber laser , optoelectronics , physics , quantum mechanics

A Tm,Ho:CALGO laser passively mode-locked by a GaSb-based SESAM generated pulses as short as 52 fs at a central wavelength of 2015 nm with a broad spectral bandwidth of 82 nm (full width at half maximum) owing to the combined gain profiles of both dopants for σ-polarized light. The average output power reached 376 mW at a repetition rate of 85.65 MHz. In the continuous-wave regime, the laser was power scaled up to 1.01 W at 2080.6 nm with a slope efficiency of 32.0%, a laser threshold of 155 mW and π-polarized emission. Polarized spectroscopic properties of Ho 3+ ions in singly doped and codoped CALGO crystals were revisited to explain the observed laser performance.

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