Femtosecond thulium fiber laser utilizing a gain-switched laser diode
Femtosecond thulium fiber laser utilizing a gain-switched laser diode
We present an ultrafast thulium fiber laser based on nonlinear pulse compression of a gain-switched laser diode operating at 1.87 µm. Seeded by a 40-ps gain-switched laser diode (GSLD), thulium-doped fiber amplifiers (TDFA) are used to increase the pulse peak power, and a normal-dispersion highly nonlinear fiber (HNF) is employed to generate a positive chirp through self-phase modulation (SPM). A bandpass filter is introduced to remove the nonlinear chirp components induced by both SPM and gain switching. A two-stage compression process is employed to maximize pulse compression and suppress the pulse pedestal. The process begins with linear compression in a passive single-mode fiber, resulting in a 1.2-ps pulse duration, followed by soliton compression in a thulium fiber amplifier. This method produces pulses with an energy of 4.7 nJ and a near transform-limited compressed pulse width of 509 fs. The all-fiberized system shows great potential as a compact, affordable, and robust alternative to mode-locked lasers for ultrafast applications.
3636-3639
Abughazaleh, Ibrahim
73ee2e1a-fdf0-473c-8657-675ae7d73885
Gerard, Matthew David
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Srisamran, Panuwat
5b98bcfa-e3a3-415d-89a4-a2fc90cef328
Xu, Duanyang
fa113964-baa4-41c9-b11f-b4879d001cf9
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Xu, Lin
b887cecd-d21e-49f4-9b45-6909a7369e84
23 May 2025
Abughazaleh, Ibrahim
73ee2e1a-fdf0-473c-8657-675ae7d73885
Gerard, Matthew David
abf85c4f-ef8f-4190-a633-7f278f440fd8
Srisamran, Panuwat
5b98bcfa-e3a3-415d-89a4-a2fc90cef328
Xu, Duanyang
fa113964-baa4-41c9-b11f-b4879d001cf9
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Xu, Lin
b887cecd-d21e-49f4-9b45-6909a7369e84
Abughazaleh, Ibrahim, Gerard, Matthew David, Srisamran, Panuwat, Xu, Duanyang, Jung, Yongmin and Xu, Lin
(2025)
Femtosecond thulium fiber laser utilizing a gain-switched laser diode.
Optics Letters, 50 (11), .
(doi:10.1364/OL.564071).
Abstract
We present an ultrafast thulium fiber laser based on nonlinear pulse compression of a gain-switched laser diode operating at 1.87 µm. Seeded by a 40-ps gain-switched laser diode (GSLD), thulium-doped fiber amplifiers (TDFA) are used to increase the pulse peak power, and a normal-dispersion highly nonlinear fiber (HNF) is employed to generate a positive chirp through self-phase modulation (SPM). A bandpass filter is introduced to remove the nonlinear chirp components induced by both SPM and gain switching. A two-stage compression process is employed to maximize pulse compression and suppress the pulse pedestal. The process begins with linear compression in a passive single-mode fiber, resulting in a 1.2-ps pulse duration, followed by soliton compression in a thulium fiber amplifier. This method produces pulses with an energy of 4.7 nJ and a near transform-limited compressed pulse width of 509 fs. The all-fiberized system shows great potential as a compact, affordable, and robust alternative to mode-locked lasers for ultrafast applications.
Text
ol-50-11-3636
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Accepted/In Press date: 12 May 2025
Published date: 23 May 2025
Identifiers
Local EPrints ID: 501499
URI: http://eprints.soton.ac.uk/id/eprint/501499
ISSN: 0146-9592
PURE UUID: b1257ad7-859d-4367-9ba7-578942eafd05
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Date deposited: 02 Jun 2025 17:08
Last modified: 03 Sep 2025 02:01
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Contributors
Author:
Ibrahim Abughazaleh
Author:
Matthew David Gerard
Author:
Panuwat Srisamran
Author:
Duanyang Xu
Author:
Yongmin Jung
Author:
Lin Xu
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