Polarization anisotropy of thermal lens in Yb:KY(WO_4)_2 laser crystal under high-power diode pumping

Loiko, Pavel; Manjooran, Sujith; Yumashev, K. V.; Major, Arkady

doi:10.1364/ao.56.002937

Cited by 65 publications

(11 citation statements)

References 52 publications

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“…Thermal lensing was taken into account [22,23]. A fiber-coupled laser diode with a maximum power of 30 W at 980 nm was used as a pump and the laser delivered up to 6 W of output power in CW regime.…”

Section: Experimental Setup and Resultsmentioning

confidence: 99%

High peak power sub-60 fs Yb:KGW laser

Akbari

Fedorova

Rafailov

2017

2017 Photonics North (PN)

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Abstract-A high power sub-60 fs mode-locked diode-pumped Yb:KGW laser based on hybrid action of an InGaAs quantum-dot saturable absorber mirror and Kerr-lens mode locking was demonstrated. The laser delivered 56 fs pulses with 1.95 W of average power corresponding to 450 kW of peak power. The spectral bandwidth of the pulse was 20.5 nm, which was near the gain bandwidth limit of the Yb:KGW crystal. To the best of our knowledge, these are the shortest pulses generated from the monoclinic double tungstate crystals (and Yb:KGW laser crystal in particular) and the most powerful in the sub-60 fs regime. At the same time they are also the shortest pulses produced to date with the help of a quantum-dot-based saturable absorber.

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Section: Experimental Setup and Resultsmentioning

confidence: 99%

High peak power sub-60 fs Yb:KGW laser

Akbari

Fedorova

Rafailov

2017

2017 Photonics North (PN)

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“…The KGW crystal was also used in the previous experiments as a CRE [14][15][16][17][18][19][20][56][57][58]. The reason for the popularity of the KGW is the strong anisotropy in its optical and physical properties [59][60] as well as high optical quality. The latter also made it a popular gain medium for diode-pumped lasers in the CW and pulsed regimes [61][62][63][64][65][66].…”

Section: Methodsmentioning

confidence: 99%

Diode-pumped Yb:CALGO laser with conical refraction output

Reza

Akbari

Fedorova

et al. 2020

Solid State Lasers XXIX: Technology and Devices

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A high power conical refraction (CR) laser was demonstrated based on Yb:CALGO laser crystal with a separate intracavity CR element. The CR laser delivered the maximum output power of 6.25 W at 25 W of incident pump power which is the highest output power for the CR lasers to date. The separation of the CR element from the laser gain medium reduced the complexity of laser pumping. The generated CR laser beam exhibited excellent quality with well-resolved concentric rings and the Poggendorff dark ring.

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“…The optical power of the thermal lens is pump-dependent, so that it is convenient to calculate the so-called sensitivity factor [40]…”

Section: Thermal Lensing Of the Saturable Absorbermentioning

confidence: 99%

Design and modeling of a passively Q-switched diode-pumped Thulium laser at 2.3 μm

Kifle

Loiko

Guillemot

et al. 2021

Optics Communications

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We report on a diode-pumped Tm:LiYF4 laser operating on the 3 H4 → 3 H5 transition (at ~2.3 μm) passively Q-switched by a Cr 2+ :ZnSe saturable absorber. This laser delivers a maximum average output power of 130 mW at 2304.6 nm with a nearly diffraction limited beam, a linear polarization (π) and no colasing at ~1.9 μm. The corresponding pulse characteristics (duration / energy) are 1.24 μs / 3.6 μJ at a repetition rate of 36 kHz. By power scaling under quasi-CW pumping, even shorter pulse durations of 870 ns and higher pulse energies of 6.1 μJ are achieved. The performance of the laser is simulated using a model of a quasi-four-level gain medium and a "slow" saturable absorber showing a good agreement with the experiment. The effect of the thermal lens of the saturable absorber on the pulse characteristics is discussed.

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Polarization anisotropy of thermal lens in Yb:KY(WO_4)_2 laser crystal under high-power diode pumping

Cited by 65 publications

References 52 publications

High peak power sub-60 fs Yb:KGW laser

High peak power sub-60 fs Yb:KGW laser

Diode-pumped Yb:CALGO laser with conical refraction output

Design and modeling of a passively Q-switched diode-pumped Thulium laser at 2.3 μm

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