Powerful femtosecond pulse generation by chirped and stretched pulse parametric amplification in BBO crystal

Dubietis, A.; Jonusauskas, Gediminas; Piskarskas, A.

doi:10.1016/0030-4018(92)90070-8

Cited by 810 publications

(306 citation statements)

References 8 publications

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“…A schematic diagram of the 50 TW hybrid OPCPA [7] arm of the laser that is in advanced stage of development is given in the Figure 2. The pulses from the Ti:sapphire oscillator was stretched in double/four pass pulse stretcher giving ∼650 ps/1.3 ns pulses respectively.…”

Section: Description Of the Laser Systemmentioning

confidence: 99%

Development of a two arm, high energy, high power laser for plasma research in India

Joshi

Kamath

Sharma

et al. 2013

EPJ Web of Conferences

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Abstract. We report here work done towards development of a two arm, high energy, high power Nd:phosphate glass laser system. One arm of the laser is proposed to be operated in a long pulse (∼1.5 ns pulse duration) with an energy of ∼400 J. Presently, this arm of the laser is operating at energy of ∼100 J after a disc amplifier that amplifies the laser beam of diameter ∼94 mm. After the addition of two more disc amplifiers which are nearing completion, the laser beam will have energy of ∼400 J, with a beam diameter 140 mm, at an intensity of ∼2 GW/cm 2 . This beam will be converted to its second harmonic using a 2 × 2 array KDP crystals. The second arm, under development, will operate with a hybrid amplification scheme using optical parametric chirped pulse amplification (OPCPA) and conventional amplification using the existing Nd:glass amplifiers to produce 50 TW, 25 J, 500 fs pulse. A tiled triangular pulse compressor is under development for compressing the stretched pulse.

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Section: Description Of the Laser Systemmentioning

confidence: 99%

Development of a two arm, high energy, high power laser for plasma research in India

Joshi

Kamath

Sharma

et al. 2013

EPJ Web of Conferences

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“…An ultrashort, intense laser system with a peak power TW class can be realized by using a noncollinear optical parametric amplifier (NOPA) [4][5][6][7][8]. As such, we are developing a near-infrared (NIR) few-cycle NOPA system, of which the designed specifications are a 5-fs pulse width and a 30-TW peak power at a 10-Hz repetition rate.…”

Section: Introductionmentioning

confidence: 99%

Development of high-energy fiber CPA system

Ogino

Sueda

Kitahara

et al. 2013

EPJ Web of Conferences

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Abstract. An intense broadband laser system based on a Nd:glass chirped pulse amplifier (CPA) requires a stable front end with good beam quality. To prepare such a front end without using a regenerative amplifier or optical parametric chirped pulse amplification (OPCPA) pumped by the second harmonic of a Nd:YAG laser, we have developed a fiber CPA system using laser diode (LD)-pumped single-mode fibers, largemode-area (LMA) fibers, and photonic-crystal (rod) fibers. The output pulse energy achieved was 1.2 mJ at a central wavelength of 1053 nm with a spectral width of 10 nm. The power fluctuation was reduced to 0.4% rms at a repetition rate of 10 kHz. The output of this fiber laser is useful as a pump source for a few-cycle noncollinear optical parametric amplifier (NOPA) and a seed for a LD-pumped high-power Nd:glass CPA system.

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“…As optical parametric amplifiers rely on nonresonant nonlinear interaction, they can be utilized to amplify extremely wide bandwidth pulses. One of the most appealing applications of this phenomenon is the Optical Parametric Chirped Pulse Amplifier (OPCPA) [1,2] in which ultrashort pulses are stretched, amplified and then compressed again. The gain medium is typically pumped by a nanosecond second harmonic pulse from a Q-switched laser.…”

Section: Introductionmentioning

confidence: 99%

Noise reduction in 3D noncollinear parametric amplifier

Migdał

Wasilewski

2010

Appl. Phys. B

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We analytically find an approximate BlochMessiah reduction of a noncollinear parametric amplifier pumped with a focused monochromatic beam. We consider type I phase matching. The results are obtained using a perturbative expansion and scaled to the high-gain regime. They allow for a straightforward maximization of the signal gain and minimization of the parametric fluorescence noise. We find the fundamental mode of the amplifier, which is an elliptic Gaussian defining the optimal seed beam shape. We conclude that the output of the amplifier should be stripped of higher-order modes, which are approximately HermiteGaussian beams. Alternatively, the pump waist can be adjusted such that the amount of noise produced in the higherorder modes is minimized.

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Powerful femtosecond pulse generation by chirped and stretched pulse parametric amplification in BBO crystal

Cited by 810 publications

References 8 publications

Development of a two arm, high energy, high power laser for plasma research in India

Development of a two arm, high energy, high power laser for plasma research in India

Development of high-energy fiber CPA system

Noise reduction in 3D noncollinear parametric amplifier

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