120mJ Q-switched Er:YAG laser at 1645nm

Larat, Christian; Schwarz, Muriel; Lallier, Éric; Durand, Éric

doi:10.1364/oe.22.004861

Cited by 26 publications

(5 citation statements)

References 8 publications

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“…The conventional approach to generate laser emission at the ~1.6 μm wavelength regime is to in-band pump Er 3+ doped materials ( 4 I15/2 → 4 I13/2) using diode or fiber laser at ~1.5 μm owing to several benefits of low quantum defect and high extraction efficiency. So far, most of the demonstrated high power continuous-wave (CW) and pulsed 1.6 μm lasers are based on Er 3+ doped garnets (Er:YAG, Er:LuAG) and vanadates (Er:YVO4, Er:GdVO4) [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Gain- and Q-switched operation of Er:Y2O3 ceramic laser at 1640 nm

Xie

Huang

Shen

et al. 2022

Advanced Lasers, High-Power Lasers, and Applications XIII

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We report on gain-and Q-switched operation of Er:Y2O3 ceramic laser at 1640 nm using in-house fabricated lowscattering-loss, 0.25-at.% Er 3+ -doped ceramic sample. Stable gain-switched operation in pulse repetition frequencies (PRFs) of 5-50 kHz has been demonstrated using an acousto-optic modulator switched 1535 nm fiber pump source, resulting in a peak power of 16 times higher than that for CW operation. Q-switched operation in 0.5-10 kHz repetition rate has been demonstrated with AO switcher, generating stable pulses of 94 ns duration and 0.5 mJ energy at 0.5 kHz for 5.7 W of absorbed pump power, corresponding to a peak power of 5.2 kW.

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Section: Introductionmentioning

confidence: 99%

Gain- and Q-switched operation of Er:Y2O3 ceramic laser at 1640 nm

Xie

Huang

Shen

et al. 2022

Advanced Lasers, High-Power Lasers, and Applications XIII

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“…Pulsed lasers, operating in the eye safety band and atmospheric transmission window (1400-1700 nm), are of great value in various fields, such as remote sensing, Doppler wind radar, ranging and free-space laser communication [1][2][3]. The low Er 3+ -doped YAG crystal has been proven to be effective in developing eye safety lasers.…”

Section: Introductionmentioning

confidence: 99%

WSe₂ saturable absorber for a pulsed bulk laser at 1645 nm

Liu

Zhang

et al. 2019

Laser Phys.

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We report a diode in-band pumped 1.6 µm passively Q-switched Er:YAG laser, using a tungsten diselenide (WSe 2 ) saturable absorber prepared with the liquid phase exfoliation method. The stable Q-switched pulses were obtained with a shortest pulse width of 650 ns and a highest single pulse energy of 11.2 µJ at a repetition rate of 71.4 kHz. Our results indicate the great potentials of WSe 2 for bulk laser modulation at ~1.6 µm and can find broad application in optoelectronics.

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“…It is also possible to achieve output pulse energies in the 100 mJ regime with erbium-doped solid-state lasers. 10 Here, we setup a scaled MERLIN laser to be able to measure the LIDT values at all three MERLIN relevant wavelengths (1064, 1645, and 3011 nm) with almost identical optical output parameters (spectral, temporal, and spatial).…”

Section: Introductionmentioning

confidence: 99%

Demonstration of a 100-mJ OPO/OPA for future lidar applications and laser-induced damage threshold testing of optical components for MERLIN

et al. 2017

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Abstract. In the field of atmospheric research, lidar is a powerful technology that can measure gas or aerosol concentrations, wind speed, or temperature profiles remotely. To conduct such measurements globally, spaceborne systems are advantageous. Pulse energies in the 100-mJ range are required to achieve highly accurate, longitudinal resolved measurements. Measuring concentrations of specific gases, such as CH 4 or CO 2 , requires output wavelengths in the IR-B, which can be addressed by optical-parametric frequency conversion. An OPO/ OPA frequency conversion setup was designed and built as a demonstration module to address the 1.6-μm range. The pump laser is an Nd:YAG-MOPA system, consisting of a stable oscillator and two subsequent Innoslab-based amplifier stages that deliver up to 500 mJ of output pulse energy at 100 Hz repetition frequency. The OPO is inherited from the OPO design for the CH 4 lidar instrument on the French-German climate satellite methane remote-sensing lidar mission (MERLIN). To address the 100-mJ regime, the OPO output beam is amplified in a subsequent multistage OPA. With potassium titanyl phosphate as nonlinear medium, the OPO/OPA delivered more than 100 mJ of output energy at 1645 nm from 450 mJ of the pump energy and a pump pulse duration of 30 ns. This corresponds to a quantum conversion efficiency of about 25%. In addition to demonstrating optical performance for future lidar systems, this laser will be part of a laser-induced damage thresholds test facility, which will be used to qualify optical components especially for the MERLIN. © The Authors.Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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120mJ Q-switched Er:YAG laser at 1645nm

Abstract: A fibre-coupled 1.47µm laser diode end-pumped Er:YAG laser system comprising one oscillator and two single pass amplifiers is described. 120mJ pulses at a 30Hz repetition rate and 1.64µm emission wavelength are reported.

Cited by 26 publications

References 8 publications

Gain- and Q-switched operation of Er:Y2O3 ceramic laser at 1640 nm

Gain- and Q-switched operation of Er:Y2O3 ceramic laser at 1640 nm

WSe₂ saturable absorber for a pulsed bulk laser at 1645 nm

Demonstration of a 100-mJ OPO/OPA for future lidar applications and laser-induced damage threshold testing of optical components for MERLIN

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120mJ Q-switched Er:YAG laser at 1645nm

Abstract: A fibre-coupled 1.47µm laser diode end-pumped Er:YAG laser system comprising one oscillator and two single pass amplifiers is described. 120mJ pulses at a 30Hz repetition rate and 1.64µm emission wavelength are reported.

Cited by 26 publications

References 8 publications

Gain- and Q-switched operation of Er:Y2O3 ceramic laser at 1640 nm

Gain- and Q-switched operation of Er:Y2O3 ceramic laser at 1640 nm

WSe2 saturable absorber for a pulsed bulk laser at 1645 nm

Demonstration of a 100-mJ OPO/OPA for future lidar applications and laser-induced damage threshold testing of optical components for MERLIN

Contact Info

Product

Resources

About

WSe₂ saturable absorber for a pulsed bulk laser at 1645 nm