High-intensity third-harmonic generation

Banks, P.S.; Feit, Michael D.; Perry, M. D.

doi:10.1364/josab.19.000102

Cited by 74 publications

(63 citation statements)

References 41 publications

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“…Radiation of the second harmonic, generated as a result of 'asynchronous' (not phase-matched) process involving the second-order nonlinearity, interacts with the pump radiation, leading to sum-frequency generation of the third harmonic. The results for the THG effect in the  -BaB 2 O 4 crystal cut at the phase matching angle for the case of direct generation with the third-order nonlinearity have been reported by different scientific groups [2,3]. They differ in the magnitudes of the cascaded and direct contributions to the THG.…”

Section: Introductionmentioning

confidence: 90%

“…As shown in [2], a considerable contribution to the process of phase-matched thirdharmonic generation (THG) using nonlinearity of the third order in uniaxial crystals is originates from the cascaded THG. Radiation of the second harmonic, generated as a result of 'asynchronous' (not phase-matched) process involving the second-order nonlinearity, interacts with the pump radiation, leading to sum-frequency generation of the third harmonic.…”

Section: Introductionmentioning

confidence: 99%

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Third-harmonic generation of femtosecond laser radiation in beta-BaB2O4 crystals

Oseledchik¹,

Kudryavtzev²,

Lucenko³

et al. 2010

Ukr. J. Phys. Opt.

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We describe the results of experimental investigation of the third-harmonic generation (THG) in -BaB 2 O 4 crystal pumped with a femtosecond laser radiation and cut at the angle  S permitting a process of direct phase-matched generation of oooe type. A theory of direct THG in uniaxial crystals, which assumes that the effective nonlinear coefficient has an additive nature with respect to the contributing processes, has been used when interpreting the experimental data. The angular dependence of the third harmonic intensity and its dependence on the incident pump power have been analysed in order to ascertain the process, the contribution of which is dominant. The analysis of our experimental results obtained under the condition of pumping  -BaB 2 O 4 ( S = 53) sample with femtosecond pulses ( = 800 nm,  = 70 fs, and max P = 100 GW/cm 2 ) has proven that the contribution of second-order cascaded processes to the THG is prevailing.

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Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Third-harmonic generation of femtosecond laser radiation in beta-BaB2O4 crystals

Oseledchik¹,

Kudryavtzev²,

Lucenko³

et al. 2010

Ukr. J. Phys. Opt.

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“…However, a relative contribution of the two processes could be different. In some cases, the direct THG process is stronger (see, e.g., Feve, Boulanger, and Guillien [2000]), in other cases the cascading THG process is dominant (see, e.g., Banks, Feit, and Perry [2002]; Bosshard, Gubler, Kaatz, Mazerant, and Meier [2000]). …”

Section: Third-harmonic Multistep Processesmentioning

confidence: 99%

“…One of the ways to separate the contribution of the two nonlinearities and express of χ (3) eff,dir in terms of the product (d eff,I )(d eff,II ) is to use the azimuthal (Banks, Feit, and Perry [2002]) or input polarization (Kim and Yoon [2002]) dependence of χ (3) eff,dir and χ (3) eff,casc . The other way is to compare the TH signal obtained under the condition ∆k THG −→ 0 with the TH signal obtained under one of the conditions ∆k SHG −→ 0 or ∆k SFG −→ 0, where the signal is only proportional to the factor |χ (3) eff,casc | 2 (Akhmanov, Meisner, Parinov, Saltiel, and Tunkin [1977]; Chemla, Begley, and Byer [1974]), and calculate χ (3) eff,dir ; however this procedure gives two possible values due to an indeterminate sign.…”

Section: Measurement Of the χ (3) -Tensor Componentsmentioning

confidence: 99%

Multistep parametric processes in nonlinear optics

2005

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We present a comprehensive overview of different types of parametric interactions in nonlinear optics which are associated with simultaneous phase-matching of several optical processes in quadratic nonlinear media, the so-called multistep parametric interactions. We discuss a number of possibilities of double and multiple phase-matching in engineered structures with the sign-varying second-order nonlinear susceptibility, including (i) uniform and non-uniform quasi-phase-matched (QPM) periodic optical superlattices, (ii) phase-reversed and periodically chirped QPM structures, and (iii) uniform QPM structures in non-collinear geometry, including recently fabricated two-dimensional nonlinear quadratic photonic crystals. We also summarize the most important experimental results on the multi-frequency generation due to multistep parametric processes, and overview the physics and basic properties of multi-color optical parametric solitons generated by these parametric interactions.

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“…To that end, we generated 262 nm pulses through third harmonic generation using two type-I beta-barium borate (BBO) crystals, as described in detail by Zohrabi 18 and others. 19,20 This 262 nm laser beam is directed toward the detector through a diverging lens and a flat mirror such that it illuminates the whole detector, as shown in Fig. 1(a).…”

mentioning

confidence: 99%