Generation of carrier-envelope phase-stable two optical-cycle pulses at 2 μm from a noncollinear beta-barium borate optical parametric amplifier

Darginavičius, J.; Garejev, N.; Dubietis, A.

doi:10.1364/ol.37.004805

Cited by 20 publications

(11 citation statements)

References 21 publications

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“…In the experiment we used a home-built optical parametric amplifier, which was pumped by the fundamental frequency (800 nm) of the amplified Ti:sapphire laser (Spitfire-PRO, Newport-Spectra Physics) and delivered carrier-envelope phase-stable 20 fs (three-optical-cycle) pulses at a carrier wavelength of 1.98 μm with up to 10 μJ energy [34]. Its output beam was suitably attenuated and focused by an f = +100 mm lens onto a wedge-shaped CaF 2 sample, producing a 55-μm-diameter (FWHM) spot at the input face of the nonlinear medium.…”

Section: Methodsmentioning

confidence: 99%

Third- and fifth-harmonic generation in transparent solids with few-optical-cycle midinfrared pulses

et al. 2014

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We report an experimental and numerical investigation of third-and fifth-harmonic generation in a CaF 2 crystal with 20 fs (three-optical-cycle), 2 μm driving pulses. The double-peaked temporal profile of the third-harmonic pulse and its propagation dynamics was captured by means of the cross-correlation technique, showing that the third-harmonic pulse naturally consists of free and driven components propagating with different group velocities, and which occur without the splitting of the driving pulse at the fundamental frequency. Relevant characteristics of the harmonics generation process, such as the harmonics spectra, energy oscillations, and conversion efficiency, were measured as functions of propagation length and input-pulse energy and intensity. Our results demonstrate that the fifth harmonic is generated solely via cascaded four-wave mixing between the fundamental and third-harmonic frequency pulses due to cubic nonlinearity, without any detectable contribution of six-wave mixing due to quintic nonlinearity in the process.

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Section: Methodsmentioning

confidence: 99%

Third- and fifth-harmonic generation in transparent solids with few-optical-cycle midinfrared pulses

et al. 2014

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“…In order to obtain intense femtosecond pulses around the 2 µm wavelength region, one of the most widely used schemes is optical parametric amplification (OPA) with well-established ultrafast pump lasers such as Ti:sapphire or Yb lasers. The OPA provides highly tunable IR pulses and has expanded our reach to the realm of few-cycle pulse duration limits [11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Millijoule femtosecond pulses at 1937 nm from a diode-pumped ring cavity Tm:YAP regenerative amplifier

et al. 2018

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We present an infrared source operating at 1937 nm center wavelength capable of generating 1.35 mJ pulse energies with 1 kHz repetition rate and 2 GW peak power based on a diode-pumped Tm:YAP regenerative amplifier. The obtained pulses after 45 round trips have been compressed down to 360 fs. Using only a small portion (15 µJ) of the output of the system we managed to generate a white light continuum in a 3 mm YAG window that exhibits the viability of the system as a suitable candidate for a pumping source of a mid-infrared optical parametric amplifier.

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“…As discussed above, the first-order phase-mismatch ∆k 1 is proportional to the group velocity mismatch (GVM) between the signal and idler pulses δ si = 1/v gs − 1/v gi . The idea of removing GVM to realize first-order phase-matching leads to the development of noncollinear OPA (NOPA) schemes [58][59][60][61][62][63][64][65][66][67][68][69][70][71][72][73][74]. In NOPA, the pump and seed beams enter the nonlinear crystal with a noncollinear angle α in between.…”

Section: Introductionmentioning

confidence: 99%

Ultrafast Mid-IR Laser Pulses Generation via Chirp Manipulated Optical Parametric Amplification

et al. 2018

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Abstract:Over the past decades, optical parametric amplification (OPA) has become one of the most promising sources of ultrafast Mid-IR laser, owing to its outstanding properties including ultrabroad bandwidth, superior tunability, good beam quality, and scalable energy. In this paper, we review the recent progress in ultrashort laser pulse generation via chirp manipulated OPA, which improves the energy scalability and gain bandwidth by strategically chirping both pump and seed pulses. The gain mechanism is theoretically analyzed and the OPA processes are numerically simulated. In addition, the concept is verified experimentally. Femtosecond pulses with hundreds of mJ are generated in a high energy dual-chirped-OPA (DC-OPA), and ultrabroadband µJ-level spectra supporting sub-2-cycle pulse durations are achieved in BBP-OPA. Furthermore, the obtained pulses show excellent tunability through the NIR to Mid-IR regions, which makes them a suitable seeding source for further amplification as well as powerful tools in various applications such as strong field physics, attosecond science, and ultrafast spectroscopy.

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Generation of carrier-envelope phase-stable two optical-cycle pulses at 2 μm from a noncollinear beta-barium borate optical parametric amplifier

Cited by 20 publications

References 21 publications

Third- and fifth-harmonic generation in transparent solids with few-optical-cycle midinfrared pulses

Third- and fifth-harmonic generation in transparent solids with few-optical-cycle midinfrared pulses

Millijoule femtosecond pulses at 1937 nm from a diode-pumped ring cavity Tm:YAP regenerative amplifier

Ultrafast Mid-IR Laser Pulses Generation via Chirp Manipulated Optical Parametric Amplification

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