Efficient Diffraction-Limited SLM Eyesafe 1617 nm Er:YAG MOPA with 1.1 ns Pulsewidth

Stoneman, Robert C.; Hartman, Ross; Schneider, E.; Garvin, Charles G.; Henderson, Sammy W.

doi:10.1364/assp.2007.we2

Cited by 8 publications

(4 citation statements)

References 3 publications

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“…The high-energy, anti-detuning pulsed solid-state laser located at the eye-safe waveband is particularly desirable for applications requiring quick scanning and high-precision coherent remote sensing detection, 1 – 3 such as the Doppler wind laser radar 4 and the differential absorption laser radar, 5 especially in the 1.6 μm region that is located at the atmospheric transmission window. However, the existing laser sources are highly susceptible to resonant cavity detuning under the influence of vibration and dramatic temperature changes, resulting in unstable power output and laser pattern, which affects the wind speed accuracy of LIDAR.…”

Section: Introductionmentioning

confidence: 99%

Pulsed Er:YAG single corner cube ring cavity with variable output ratio

Fan

et al. 2023

Opt. Eng.

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.In this paper, a ring cavity of Er:YAG laser with a single corner cube prism is investigated. Due to the depolarization effect of the corner cube, the tunable output coupling ratio was 0.25% to 72.67% by changing the angle of the λ / 4 plate according to the calculation results of Jones matrix. An experiment for checking the anti-detuning performances of the single corner cube cavity was also carried out. The results indicated that the output power was stable at the rotating angles of <3.06 deg and 1.637 deg along the vertical and horizontal directions, respectively. Under continuous wave operation, a 5.4 W vertically-polarized laser of 1645.1 nm was acquired through double polarizers with the beam quality factors (M2) of 1.17 in the x direction and 1.42 in the y direction, and the slope efficiency was 45.47%. Additionally, under the condition of a pulse-repetition-frequency (PRF) of 200 Hz, the pump power of 29.04 W, a maximum pulse energy of 2.2 mJ was realized, and the minimum pulse width was 86 ns, leading to a peak power of 25.58 KW.

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Section: Introductionmentioning

confidence: 99%

Pulsed Er:YAG single corner cube ring cavity with variable output ratio

Fan

et al. 2023

Opt. Eng.

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“…Eye-safe solid-state lasers oscillating at the wavelength region around 1.6 µm have found many applications in such fields as Doppler wind lidars, differential absorption lidars, ranging and coherent imaging systems [1][2][3][4]. The usages require a stable pulsed laser with high energy and narrow linewidth.…”

Section: Introductionmentioning

confidence: 99%

“…2.1 W average output power with 1.1 ns pulse width at a pulse repetition frequency (PRF) of 10 kHz was achieved. Then, the output power of single-frequency pulses were amplified to 4.7 W for longrange eye-safe coherent imaging [3]. In 2013, an Er:YLuAG laser pumped by two 1532 nm fiber lasers was presented by Meissner et al [6].…”

Section: Introductionmentioning

confidence: 99%

10 mJ single-frequency, injection-seeded Q-switched Er:YAG laser pumped by a 1470 nm fiber-coupled LD

Gao

Shi

et al. 2018

Laser Phys. Lett.

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A 1645 nm injection-seeded Q-switched Er:YAG laser resonantly pumped by a 1470 nm fiber-coupled laser diode is demonstrated with a non-planar ring oscillator as a seed laser to realize the single-frequency operation. The maximum output pulse energy of the laser is 10.1 mJ, corresponding to a pulse width of 205 ns at a repetition rate of 200 Hz. The half-width of the pulse spectrum is 2.44 MHz measured by a heterodyne technique. The fluctuation of the center frequency of the pulsed laser is 1.43 MHz (RMS) in 1 h. To the best of our knowledge, this is highest energy obtained from a single-frequency, injection-seeded Er:YAG laser pumped by a laser diode.

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“…Without any selective element in the cavity, the line competition is generally won by the 1645 nm transition. The 1617 nm wavelength was observed in free running only at temperature below 90 K [7], in high loss cavities [8,9] or with injection seeding [10]. With an intracavity etalon, an output power up to 31 W in continuous wave operation [8] and Q-switched pulses with a energy of 30.5 mJ and duration of 20 ns [11] have been demonstrated with a diffraction limited Er:Yb fiber laser as pump source.…”

Section: Introductionmentioning

confidence: 99%

Resonant diode-pumping of Er:YAG single crystal fiber operating at 1617 nm

et al. 2012

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We demonstrated laser operation of a Er:YAG single crystal fiber at 1617 nm. Pumped on both sides by a laser diode at 1532 nm, a 600 µm diameter-60 mm long-single crystal fiber produced an output power of 5.5 W once the wavelength 1617 nm was selected by an intracavity etalon. In Q-switched operation with an acousto-optic modulator, the laser produced an energy of 0.5 mJ at 100 Hz repetition rate with a pulse duration of 28 ns. The Watt level in average power was achieved for a repetition rate of 3 kHz with a pulse duration maintained around 30 ns

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Efficient Diffraction-Limited SLM Eyesafe 1617 nm Er:YAG MOPA with 1.1 ns Pulsewidth

Cited by 8 publications

References 3 publications

Pulsed Er:YAG single corner cube ring cavity with variable output ratio

Pulsed Er:YAG single corner cube ring cavity with variable output ratio

10 mJ single-frequency, injection-seeded Q-switched Er:YAG laser pumped by a 1470 nm fiber-coupled LD

Resonant diode-pumping of Er:YAG single crystal fiber operating at 1617 nm

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