0.8 mJ quasi-continuously pumped sub-nanosecond highly doped Nd:YAG oscillator-amplifier laser system in bounce geometry

Jelínek, Michal; Kubeček, Václav; Cech, Miroslav; Hiršl, Petr

doi:10.1002/lapl.201010117

Cited by 28 publications

(23 citation statements)

References 16 publications

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“…The beam spatial profile was nearly Gaussian in both axes, duration of the pulse measured by the streak camera was 19 ps with stability better than 2 ps. In comparison with our previously published results [25], significant (about 5 times) pulse duration shortening and stability improvement was achieved.…”

Section: Extracted Pulse Characterizationsupporting

confidence: 64%

“…Pulse duration evolution along the train was also investigated but no significant variation was observed on contrary to our previous configuration with saturable absorber in transmission mode [23,25], which confirms the fact that the GaAs substrate of absorber was responsible for passive negative feedback resulting in pulse shortening along the stretched pulse train. The duration of the pulse with maximum amplitude was also measured by the SHG autocorrelator and the autocorrelation curve is show in Fig.…”

Section: Laser Output Characteristics Without Cavity Dumpingsupporting

confidence: 57%

“…In comparison with our previously published data obtained with similar system using the semiconductor saturable absorber in transmission mode [25], significant pulse shortening and stability improvement was achieved.…”

Section: Introductionsupporting

confidence: 55%

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15 ps quasi-continuously pumped passively mode-locked highly doped Nd:YAG laser in bounce geometry

Jelínek

Kubeček

2011

Laser Phys. Lett.

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A semiconductor saturable absorber mirror modelocking of a quasi-continuously pumped laser based on 2.4 at.% Nd:YAG slab in a bounce geometry was demonstrated and investigated. Output mode-locked and Q-switched train containing 15 pulses with total energy of 500 μJ was generated directly from the oscillator. The measured 15 ps pulse duration and excellent temporal stability ±2 ps are the best values for pure passively mode-locked and Q-switched Nd:YAG laser with the pulse pumping. Furthermore, using the cavity dumping technique, single 19 ps pulse with energy of 25 μJ was extracted directly from the oscillator. Time, psTemporal profile of the pulse with the maximum amplitude measured by the streak camera. Inset shows the measured pulse record and its replica reflected from the 5 mm thick glass etalon

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Section: Extracted Pulse Characterizationsupporting

confidence: 64%

Section: Laser Output Characteristics Without Cavity Dumpingsupporting

confidence: 57%

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15 ps quasi-continuously pumped passively mode-locked highly doped Nd:YAG laser in bounce geometry

Jelínek

Kubeček

2011

Laser Phys. Lett.

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“…Diode-pumped, active Q-switched lasers, which show good beam quality and high output peak power, are commonly utilized in material processing and nonlinear frequency conversion applications [2][3][4][5][6]. The Nd:YAG crystal has a long upper-state lifetime (230 μs) and superior thermal-mechanical and optical properties that allow it to easily generate high peak power and high energy Q-switched laser pulses [7].…”

Section: Introductionmentioning

confidence: 99%

High Power Diode-Side-Pumped Q-Switched Nd:YAG Solid-State Laser with a Thermoelectric Cooler

et al. 2015

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Abstract:A diode-side-pumped, high-energy, high-beam-quality, pulsed solid-state Nd 3+ :Y3Al5O12 (Nd:YAG) laser with a thermoelectric cooler (TEC) is investigated in this study. The pump laser was a pulsed laser diode array with maximum peak power of 15 kW. A 350 mJ laser pulse was obtained with a wavelength of 1064 nm, a pulse duration of 10 ns, a total electrical-to-optical efficiency of 7.5%, a relative stability of output energy of 5%, and a beam quality of M 2 < 4.

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“…Hundreds of microjoules of amplified pulse energies have been reported for picosecond pulses with small signal gains of around 40 and 60 dB for single and double slab modules, respectively [6]. To the best of our knowledge, all reported Nd 3 -doped bounce amplifiers so far (see, for example, [5][6][7][8][9]) have been pumped by 808 nm light. Despite a slightly lower absorption coefficient, direct pumping in the upper-band laser level at 880 nm is a promising alternative thanks to the higher quantum efficiency and lower thermal distortion [10].…”

mentioning

confidence: 99%

Tailored pulse sequences from an 880 nm pumped Nd:YVO_4 bounce amplifier

Morgenweg

Eikema

2012

Opt. Lett.

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We report on an 880 nm quasi-continuously pumped Nd:YVO 4 grazing-incidence "bounce" amplifier, operating at a 300 Hz repetition rate. More than 70 dB small signal gain is achieved with a single crystal. Combined with fast programmable modulators, high-contrast and near-diffraction-limited pulse sequences at the 100 μJ level are produced and can be tailored in terms of pulse duration, amplitude, and a temporal spacing well into the microsecond range. This system could significantly improve extreme-UV comb generation based on parametric amplification and harmonic upconversion of two near-IR comb laser pulses. © 2012 Optical Society of America OCIS codes: 140.3530, 140.3280. An increasing number of research groups have developed terawatt intensity, ultrafast optical parametric chirped-pulse amplifier systems because their considerable potential in fields such as attoscience and highenergy physics (see, for example, [1][2][3]). Recently we showed that such a system is also well suited to perform frequency comb metrology in the extreme-UV by amplifying and upconverting two consecutive pulses from a near-IR frequency comb laser [4]. This approach requires a carefully synchronized pump pulse for each frequency comb pulse that is amplified in the parametric amplifier.Up to now, these have been generated by applying beam splitters and a fixed delay line in the pump laser. Here we present a more versatile and general approach, using an ultrahigh-gain amplifier combined with fast modulators. The system employs a grazing-incidence "bounce" amplifier, based on Nd 3 -doped gain material (Nd:YVO 4 ), which benefits in particular from high-peak-power quasicontinuous-wave (QCW) diode pumping [5]. Hundreds of microjoules of amplified pulse energies have been reported for picosecond pulses with small signal gains of around 40 and 60 dB for single and double slab modules, respectively [6]. To the best of our knowledge, all reported Nd 3 -doped bounce amplifiers so far (see, for example, [5-9]) have been pumped by 808 nm light. Despite a slightly lower absorption coefficient, direct pumping in the upper-band laser level at 880 nm is a promising alternative thanks to the higher quantum efficiency and lower thermal distortion [10].In this Letter we present, to the best of our knowledge, the first Nd:YVO 4 bounce amplifier pumped at 880 nm. Together with spectral clipping and the combination of fast electro-optical and high-contrast acousto-optical modulators, the system produces near-diffraction-limited pulse sequences with widely tunable timings, intensities, and pulse lengths. Figure 1 shows a simplified sketch of the experimental setup. The master oscillator is a home-built high-power Nd:YVO 4 laser, mode locked with a semiconductor saturable absorber mirror and pumped with 24 W at 880 nm. It provides 0.25 nm spectral bandwidth in a 126 MHz pulse train with 5 W average output power; the repetition rate is locked via a piezo-mounted mirror.A slit on a translation stage close to the Fourier plane of a 4f -grating-system was used...

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0.8 mJ quasi-continuously pumped sub-nanosecond highly doped Nd:YAG oscillator-amplifier laser system in bounce geometry

Cited by 28 publications

References 16 publications

15 ps quasi-continuously pumped passively mode-locked highly doped Nd:YAG laser in bounce geometry

15 ps quasi-continuously pumped passively mode-locked highly doped Nd:YAG laser in bounce geometry

High Power Diode-Side-Pumped Q-Switched Nd:YAG Solid-State Laser with a Thermoelectric Cooler

Tailored pulse sequences from an 880 nm pumped Nd:YVO_4 bounce amplifier

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