Open AccessActively Q-switched tunable single-longitudinal-mode 2 µm Tm:YAP laser using a transversally chirped volume Bragg grating
Author(s) -
Quentin Berthomé,
Arnaud Grisard,
Basile Faure,
Grégoire Souhaité,
Éric Lallier,
Jean-Michel Melkonian,
Antoine Godard
Publication year - 2020
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.384499
Subject(s) - optics , laser linewidth , fiber bragg grating , materials science , fabry–pérot interferometer , longitudinal mode , grating , chirp , laser , full width at half maximum , wavelength , optoelectronics , physics
A pulsed, single longitudinal mode, wavelength-tunable Tm:YAP laser is reported. We demonstrate 1 kHz stable operation with 230 µJ, 50 ns pulses and a spectrum linewidth narrowed below 4 pm (FWHM) close to the Fourier transform limit by use of a volume Bragg grating and a YAG etalon. The output wavelength was tuned from 1940 to 1960 nm owing to a transverse chirp of the period of the Bragg grating.