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Compact picosecond mid-IR PPLN OPO with controllable peak powers

Compact picosecond mid-IR PPLN OPO with controllable peak powers
Compact picosecond mid-IR PPLN OPO with controllable peak powers
We report a high-repetition-rate, compact, mid-infrared picosecond (ps) optical parametric oscillator (OPO) based on periodically poled lithium niobate (PPLN). The OPO is synchronously pumped by an ytterbium-doped-fibre (YDF) master-oscillator-power-amplifier (MOPA) system, seeded by a 1040-nm gain-switched laser diode (GSLD). Under continuous-wave (cw) pulsed operation, at a 1.5-GHz repetition rate and 14-W pump power, an idler average power of 2.4 W (∼30 W peak power) was achieved, with an idler wavelength tunability of 2260–3573 nm. Through the addition of an electro-optic modulator (EOM) to the MOPA system, acting as a time gate to suppress a variable number of pulses per 1 µs, a quasi-cw pumping regime was realized, allowing burst-mode operation of the OPO at a 1-MHz inter-burst repetition rate. By varying the burst window time with the EOM, controllable idler peak powers of up to 1.2 kW were then realized.
2578-7519
2741-2748
Wu, Yudi
e7533e89-9316-44a0-9fe1-91d31ea3baf7
Liang, Sijing
2fe0bfcc-99f0-46ee-8a2e-2a7857fbfb74
Fu, Qiang
b01fb880-ccd2-4acb-8d08-0a9668bed6e6
Xu, Lin
b887cecd-d21e-49f4-9b45-6909a7369e84
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Wu, Yudi
e7533e89-9316-44a0-9fe1-91d31ea3baf7
Liang, Sijing
2fe0bfcc-99f0-46ee-8a2e-2a7857fbfb74
Fu, Qiang
b01fb880-ccd2-4acb-8d08-0a9668bed6e6
Xu, Lin
b887cecd-d21e-49f4-9b45-6909a7369e84
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3

Wu, Yudi, Liang, Sijing, Fu, Qiang, Xu, Lin and Richardson, David J. (2020) Compact picosecond mid-IR PPLN OPO with controllable peak powers. OSA Continuum, 3 (10), 2741-2748. (doi:10.1364/OSAC.400213).

Record type: Article

Abstract

We report a high-repetition-rate, compact, mid-infrared picosecond (ps) optical parametric oscillator (OPO) based on periodically poled lithium niobate (PPLN). The OPO is synchronously pumped by an ytterbium-doped-fibre (YDF) master-oscillator-power-amplifier (MOPA) system, seeded by a 1040-nm gain-switched laser diode (GSLD). Under continuous-wave (cw) pulsed operation, at a 1.5-GHz repetition rate and 14-W pump power, an idler average power of 2.4 W (∼30 W peak power) was achieved, with an idler wavelength tunability of 2260–3573 nm. Through the addition of an electro-optic modulator (EOM) to the MOPA system, acting as a time gate to suppress a variable number of pulses per 1 µs, a quasi-cw pumping regime was realized, allowing burst-mode operation of the OPO at a 1-MHz inter-burst repetition rate. By varying the burst window time with the EOM, controllable idler peak powers of up to 1.2 kW were then realized.

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Accepted/In Press date: 3 September 2020
Published date: 22 September 2020

Identifiers

Local EPrints ID: 444125
URI: http://eprints.soton.ac.uk/id/eprint/444125
ISSN: 2578-7519
PURE UUID: c2af638b-bb9d-49bb-9b6f-ae8bb82dc08b
ORCID for David J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058

Catalogue record

Date deposited: 28 Sep 2020 16:30
Last modified: 10 Jan 2022 02:34

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Contributors

Author: Yudi Wu
Author: Sijing Liang
Author: Qiang Fu
Author: Lin Xu

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