Laser-diode-pumped Cr^4+,Nd^3+:YAG with self-Q-switched laser output of 14 W

Dong, Jun; Deng, Peizhen; Lu, Yutian; Zhang, Yinghua; Liu, Yupu; Xu, Jing; Chen, Wei

doi:10.1364/ol.25.001101

Cited by 77 publications

(28 citation statements)

References 19 publications

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“…Cr,Nd:YAG and Cr,Yb:YAG self-Q-switched lasers have been demonstrated [8][9][10]. The low concentration of Nd 3+ ions in Cr,Nd:YAG crystal limits the laser operation.…”

Section: Introductionmentioning

confidence: 99%

Efficient, nanosecond self-Q-switched Cr,Yb:YAG lasers by bonding Yb:YAG crystal

Zhou

Dong

et al. 2011

Laser Phys. Lett.

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Efficient laser-diode pumped self-Q-switched Cr,Yb:YAG lasers by bonding Yb:YAG crystal to increase pump power absorption efficiency have been demonstrated for the first time to our best knowledge. The effect of transmission of output coupler (TOC) on the laser performance has been investigated and found that the best laser performance was achieved with T OC = 50%. Average output power of 1 W was obtained with T OC = 50% at absorbed pump power of 5.4 W; corresponding optical-to-optical efficiency of 18.5% was obtained with respect to the absorbed pump power. Slope efficiency of 25% was measured with T OC = 50%. Laser pulses with pulse width of 26 ns, pulse energy of 37 μJ, and corresponding peak power of 1.4 kW with TOC = 50% were obtained. The lasers oscillate in multi-longitudinal-mode; number of the modes increases from two to five with pump power, owing to the mode selection by Cr,Yb:YAG thin plate acting as an intracavity etalon. Pulse characteristics such as pulse repetition rate, pulse energy, peak power, and pulse width of Yb:YAG/Cr,Yb:YAG self-Qswitched lasers as a function of transmission of output coupler

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“…Cr,Nd:YAG and Cr,Yb:YAG self-Q-switched lasers have been demonstrated [8][9][10]. The low concentration of Nd 3+ ions in Cr,Nd:YAG crystal limits the laser operation.…”

Section: Introductionmentioning

confidence: 99%

Efficient, nanosecond self-Q-switched Cr,Yb:YAG lasers by bonding Yb:YAG crystal

Zhou

Dong

et al. 2011

Laser Phys. Lett.

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“…The other advantage of Cr 4+ -doped bulk crystals is that self-Q-switched laser materials can be fabricated by co-doping Cr ions, Ca 2+ ions as compensating charger to form Cr 4+ ions in oxygen atmosphere, and lasants in YAG. Cr, Ca, and Nd ions co-doped YAG (Cr,Nd:YAG) and Cr, Ca, and Yb co-doped YAG (Cr,Yb:YAG) self-Q-switched lasers have been demonstrated [8][9][10]. The low concentration of Nd 3+ ions in Cr,Nd:YAG crystal limits the laser operation.…”

Section: Introductionmentioning

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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“…Another interest in Yb:YAG lasers is that the frequency doubled wavelength of 515 nm matches the highest power line of Ar-ion lasers, thereby leading to the possibility of an all solid-state replacement (Fan & Ochoa 1995). Linearly polarized laser output was observed in these compact passively Q-switched lasers (Li et al, 1993;Yankov 1994;Kir'yanov et al, 1999;Yoshino & Kobyashi 1999;Dong et al, 2000;Bouwmans et al, 2001). The causes of the linearly polarized output in these passively Q-switched lasers were attributed to the influence of the pump polarization (Bouwmans et al, 2001), relative orientations of the switch and an intracavity polarizer (Kir'yanov et al, 1999), temperature change induced weak phase anisotropy (Yoshino & Kobyashi 1999), and the anisotropic nonlinear saturation absorption of Cr,Ca:YAG crystal under high laser intensity (Eilers et al, 1992).…”

Section: Introductionmentioning

confidence: 99%

Concentration-Dependent Laser Performance of Yb:YAG Ceramics and Passively Q-switched Yb:YAG/Cr,Ca:YAG Lasers

Dong¹,

Ueda²,

Yagi³

et al. 2010

Advances in Solid State Lasers Development and Applications

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Laser-diode-pumped Cr^4+,Nd^3+:YAG with self-Q-switched laser output of 14 W

Cited by 77 publications

References 19 publications

Efficient, nanosecond self-Q-switched Cr,Yb:YAG lasers by bonding Yb:YAG crystal

Efficient, nanosecond self-Q-switched Cr,Yb:YAG lasers by bonding Yb:YAG crystal

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

Concentration-Dependent Laser Performance of Yb:YAG Ceramics and Passively Q-switched Yb:YAG/Cr,Ca:YAG Lasers

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