Coupled-cavity electro-optically Q-switched Nd:YVO_4 microchip lasers

Zayhowski, J. J.; Dill, C.

doi:10.1364/ol.20.000716

Cited by 72 publications

(20 citation statements)

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“…Nd:YVO 4 crystals have been employed as highly efficient laser-diode pumped microlasers [4], an efficient phosphors [5], very attractive polarizer materials [6] and low-threshold laser hosts [7], etc. In comparison with the conventional Nd: YAG crystal, Nd:YVO 4 offers many advantages such as larger absorption co-efficient and gain cross section [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Growth, morphology and mechanism of rare earth vanadate crystals under mild hydrothermal conditions

Byrappa

Chandrashekar

Basavalingu

et al. 2007

Journal of Crystal Growth

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Section: Introductionmentioning

confidence: 99%

Growth, morphology and mechanism of rare earth vanadate crystals under mild hydrothermal conditions

Byrappa

Chandrashekar

Basavalingu

et al. 2007

Journal of Crystal Growth

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“…Conventional electro-optical Qswitches need high voltage applied, and the power consumption is quite large at high pulse rates. The coupledcavity electro-optically Q-switched microchip lasers can generate 2.25 MHz, 8.8 ns laser pulses with 16 W peak power [11], but the laser performance relies on maintaining interferometric control of the relative lengths of the two constituent cavities, placing tight tolerances on the manufacture of the device and on its temperature control during use [12]. Acousto-optically (AO) Q-switched lasers are suitable for high repetition rate operation.…”

Section: Introductionmentioning

confidence: 99%

A fundamental mode miniature acousto-optically Q-switched Nd:YVO₄ laser with short pulse width at high repetition rates

et al. 2007

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A miniature, high repetition rate, short pulse width acousto-optically Q-switched Nd:YVO4 laser in fundamental mode is presented. Miniature solid-state lasers have the characteristics of short cavity length and small mode area in the cross section, which, on the one hand, benefits high gain, high repetition rate and short pulse width, on the other hand, makes it difficult to achieve high mode-matching efficiency and causes higher order modes oscillation. The thermal lens in Nd:YVO 4 is treated as thick lens under high pump intensity. The mode-matching efficiency is analyzed with the thermal lens being equivalent to a thin lens array. In high repetition rate Q-switching operation, 3.6 ns pulses at 500 kHz repetition rate with 20 mm cavity length and 4.1 kW peak power are achieved, without active control of pump beam quality. The laser beam quality factors were measured to be M 2 x = 2.03, M 2 y = 2.46. By improving the pump beam quality and utilizing the optimal pump beam waist radius and location, the mode-matching efficiency and laser beam quality are improved. 4.0 ns pulses at 500 kHz with 2.5 kW peak power are produced. The beam quality factors were measured to be M

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“…Pulse generation can be performed both due to fast changes in pump power -,,gain switched" generation and changes in Q factor -,,Q-switched" generation [1]. The best result has been obtained for Nd:YVO4 microlaser with electrooptical Q-switching using LiTaO3 crystal (pulses of 1 15 ps, 60 kW, repetition rate of 1 kHz) [2] but in practice passive Q-switching is used [3].…”

Section: Introductionmentioning

confidence: 99%

<title>Passive Q-switches for diode-pumped laser resonators</title>

2000

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The paper presents the results of investigations on spectroscopic properties of new non-linear absorbers used for diodepumped laser systems: yttrium-aluminium garnet doped with trivalent vanadium ions (YAG:V3) and Te doped GaAs semiconductor absorber.In this work we present the results on YAG:V3 single crystal growth and examination of Q-switching of laser resonator in near JR band. YAG single crystals doped with V3 ions of different concentrations were obtained by the Czochralski method. The absorption and emission spectra measurements on those crystals are presented. The as grown crystals have not non-linear absorption bands of V3 ions in tetrahedral positions (820 nm, 1100 nm and 1300 nm). After crystals annealing in reducing atmosphere absorption bands in NIR region arise. The investigations of changes in transmission properties of YAG crystals with different concentrations of V3 ions have been carried out as a function of power density of transmitted radiation at 822 nm (Ti:Sapphire laser), 1064 nm, and 13 18 nm (YAG:Nd3 laser). Dependence of transmission changes of the GaAs:Te on power density of diagnostic radiation of 1064 nm have been determined. The following parameters of non-linear absorbers were estimated: non-active losses, absorption cross-section, saturation energy, concentration of active centres, relaxation time, and energy losses caused by absorber bleaching.Generation characteristics ofYAG:Nd3 laser with GaAs:Te and YAG:V3 modulators have been investigated.

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Coupled-cavity electro-optically Q-switched Nd:YVO_4 microchip lasers

Abstract: Nd:YVO(4) microchip lasers have been electro-optically Q switched to produce 12-microJ pulses of 115-ps duration at repetition rates of up to 1 kHz. At a repetition rate of 2.25 MHz, 0.16-microJ pulses with an 8.8-ns duration were obtained.

Cited by 72 publications

References 3 publications

Growth, morphology and mechanism of rare earth vanadate crystals under mild hydrothermal conditions

Growth, morphology and mechanism of rare earth vanadate crystals under mild hydrothermal conditions

A fundamental mode miniature acousto-optically Q-switched Nd:YVO₄ laser with short pulse width at high repetition rates

<title>Passive Q-switches for diode-pumped laser resonators</title>

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Coupled-cavity electro-optically Q-switched Nd:YVO_4 microchip lasers

Abstract: Nd:YVO(4) microchip lasers have been electro-optically Q switched to produce 12-microJ pulses of 115-ps duration at repetition rates of up to 1 kHz. At a repetition rate of 2.25 MHz, 0.16-microJ pulses with an 8.8-ns duration were obtained.

Cited by 72 publications

References 3 publications

Growth, morphology and mechanism of rare earth vanadate crystals under mild hydrothermal conditions

Growth, morphology and mechanism of rare earth vanadate crystals under mild hydrothermal conditions

A fundamental mode miniature acousto-optically Q-switched Nd:YVO4 laser with short pulse width at high repetition rates

<title>Passive Q-switches for diode-pumped laser resonators</title>

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A fundamental mode miniature acousto-optically Q-switched Nd:YVO₄ laser with short pulse width at high repetition rates