Edge-pumped asymmetric Yb:YAG/YAG thin disk laser

Liu, Q; Fu, Xing; Ma, Dongtang; Yan, Xiaoyun; He, Fuchu; Huang, Lei; Gong, Mali; Wang, D

doi:10.1002/lapl.200710055

Cited by 39 publications

(17 citation statements)

References 16 publications

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“…The mechanically bonded Yb:YAG ceramic and Cr,Yb:YAG crystal were held between two copper blocks. Five concave mirrors with 70-mm curvature and different transmissions (T OC ) of 10,20,30,40, and 50% at 1030 nm were used as output couplers. The cavity length is 70 mm.…”

Section: Methodsmentioning

confidence: 99%

Comparative study on enhancement of self-Q-switched Cr,Yb:YAG lasers by bonding Yb:YAG ceramic and crystal

Dong

Cheng

et al. 2011

Laser Phys. Lett.

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Enhancement of laser-diode pumped self-Qswitched Cr, Ca, and Yb 3+ ions co-doped YAG (Cr,Yb:YAG) lasers by bonding Yb:YAG ceramic to increase pump power absorption efficiency have been demonstrated for the first time to our best knowledge. Efficient Cr,Yb:YAG self-Q-switched laser performance has been achieved by bonding Yb:YAG ceramic. The effect of transmission of output coupler (T OC ) on the laser performance has been investigated and found that the best laser performance was achieved with TOC = 20% for Yb:YAG ceramic. Slope efficiency of 20% was achieved with T OC = 20% for Cr,Yb:YAG self-Q-switched laser by bonding Yb:YAG ceramic. Maximum average output power of 683 mW was measured at absorbed pump power of 4.5 W; the corresponding optical-to-optical efficiency is 15.2%. The output laser pulse characteristics were compared for Cr,Yb:YAG self-Q-switched lasers by bonding Yb:YAG ceramic and crystal under different transmission of output coupler. For the same T OC , the laser performance of Cr,Yb:YAG self-Q-switched lasers by bonding Yb:YAG ceramic is better than that by bonding Yb:YAG crystal. T oc = 10%, η s = 13% T oc = 20%, η s = 20% T oc = 30%, η s = 16% Yb:YAG crystal:T oc = 10%, η s = 5% T oc = 20%, η s = 14% T oc = 30%, η s = 18%Average output power of Cr,Yb:YAG self-Q-switched lasers by bonding Yb:YAG ceramic and crystal as a function of the absorbed pump power for different transmission of output coupler, TOC

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Section: Methodsmentioning

confidence: 99%

Comparative study on enhancement of self-Q-switched Cr,Yb:YAG lasers by bonding Yb:YAG ceramic and crystal

Dong

Cheng

et al. 2011

Laser Phys. Lett.

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“…In order to quantitatively analyze the influence of the medium cut angle and doping concentration on the uniformity of the pump light distribution, the relative value of the root mean square error (RMS) can be introduced here to represent the uniformity of the pump light distribution in the medium [2][3][4][5][6][7] Where mn is the m×n equal division of the cross-sectional direction of the inscribed circle at the end face of the medium, Ixy is the pump light intensity at the sampling point, and is the average value of the pump light intensity at all sampling points, The size of the RMS value can quantitatively represent the uniformity of the absorption distribution of the pump light in the medium. The smaller the RMS value, the more uniform the distribution of the pump light.…”

Section: Pump Coupling Systemmentioning

confidence: 99%

Simulation design of non-uniformly doped ceramic thin-disk laser amplifier

Bian

Liu

Wang

et al. 2023

AOPC 2022: Advanced Laser Technology and Applications

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This paper introduces a laser amplifier with a non-uniform concentration of ceramic material as a laser gain medium. This gain medium structure prepared by ceramics is a circular thin-disk with a thickness of about 1mm and the size of the cross-section radius(r) is determined by the signal light to be amplified, the pump light absorption efficiency is generally above 96% and the uniformity of the pump light absorption distribution is a predetermined value, such as 96% or higher. The ceramic gain medium of this non-uniformly doped structure adopts a new way to achieve the uniformity of the gain distribution, this way resolves the contradiction between high absorption efficiency and high uniform gain, it is beneficial to realize high-power, high-efficiency and high-beam quality laser output.

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“…The first temperature derivations of phase-mismatch at an initially set PM temperature of 20 • C, against FH wavelength, are calculated for the five typical nonlinear crystals, i.e. KH 2 PO 4 (KDP) [9], LiB 3 O 5 (LBO) [10], BaB 2 O 4 (BBO) [11], CsLiB 6 O 10 (CLBO) [12], and YCOB [4]. As shown in Fig.…”

Section: Basic Principlementioning

confidence: 99%

Versatile temperature-insensitive second-harmonic generation by compensating thermally induced phase-mismatch in a two-crystal design

et al. 2012

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We propose and experimentally demonstrate a novel second-harmonic-generation (SHG) scheme capable of supporting temperature-insensitive phase-matching (PM) at various laser wavelengths. This versatile temperature-insensitive PM is designed by using two cascaded crystals with opposite signs of temperature derivation of phase-mismatch, in which the temperature-induced phase-mismatch in the first crystal is well compensated in the second crystal. Two application examples are studied at the typical wavelengths of ∼ 1.0 and 1.5 µm, respectively. The proof-of-principle experiment, using two crystals of LiB3O5 (LBO) and KH2PO4 (KDP), demonstrates that the temperature-acceptance of PM can be 2 -3 times larger than that of using a traditional single crystal. The proposed two-crystal design may provide a promising route to high-average-power SHG at various laser wavelengths.

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Edge-pumped asymmetric Yb:YAG/YAG thin disk laser

Cited by 39 publications

References 16 publications

Comparative study on enhancement of self-Q-switched Cr,Yb:YAG lasers by bonding Yb:YAG ceramic and crystal

Comparative study on enhancement of self-Q-switched Cr,Yb:YAG lasers by bonding Yb:YAG ceramic and crystal

Simulation design of non-uniformly doped ceramic thin-disk laser amplifier

Versatile temperature-insensitive second-harmonic generation by compensating thermally induced phase-mismatch in a two-crystal design

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