Parametric generation of picosecond continuum in near-infrared and visible ranges on the basis of a quadratic nonlinearity

Bareĭka, B; Birmontas, A; Dikchyus, G A; Piskarskas, A.; Sirutkaitis, Valdas; Stabinis, A.

doi:10.1070/qe1982v012n12abeh006315

Cited by 16 publications

(6 citation statements)

References 1 publication

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“…This can be used for amplification of extremely short pulses (extremely large bandwidths) but also for generation of broadband femtosecond continua by pumping an OPG, in a similar manner as demonstrated in the past with KDP, pumped at 527 nm in the picosecond regime. 18 Similar properties have been identified recently in periodically poled KTP but the optimum pump wavelength is above 800 nm. 19…”

Section: Phase-matching Properties Of Bibo For Opasupporting

confidence: 55%

Optical parametric generation of high-energy femtosecond pulses in the 1-3 μm spectral range using BiB 3 O 6

Petrov

Ghotbi

Tzankov

et al. 2007

Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VI

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We analyze the phase-matching properties of the monoclinic nonlinear crystal BiB 3 O 6 (BIBO) for optical parametric amplification of femtosecond pulses when pumped near 800 nm by Ti:sapphire based laser systems. BIBO possesses higher figure of merit than β-BaB 2 O 4 (BBO) and extremely large parametric gain bandwidth for collinear interaction. Experimentally, we compare type-II BIBO and BBO in a double pass optical parametric amplifier (OPA), pumping by amplified 80-fs pulses near 800 nm at a repetition rate of 1 kHz. The conversion efficiency obtained with BIBO is higher and a total energy output (signal + idler) of about 80 µJ is obtained in the plateau region of the tunability curve (1-3 µm) with an uncoated sample, for a total pump energy of 375 µJ. Shorter pulse durations were obtained with BIBO: e.g. 120 fs (FWHM) near 3 µm for the idler pulses. Substantial power scaling of such a femtosecond OPA is possible using a large aperture BIBO crystal in the second stage and we demonstrate a total energy output (signal + idler) exceeding 1 mJ, corresponding to an intrinsic conversion efficiency of ≈32% for the second stage, using a specially designed highpower Ti:sapphire pump system operating at 1 kHz. The tunability extends in this case from 1.1 to 2.9 µm. The high parametric gain and broad amplification bandwidth of type-I BIBO allow the maintenance of the pump pulse duration, leading to pulse lengths less than 140 fs, both for the signal and idler pulses, even at such high output levels.

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Section: Phase-matching Properties Of Bibo For Opasupporting

confidence: 55%

Optical parametric generation of high-energy femtosecond pulses in the 1-3 μm spectral range using BiB 3 O 6

Petrov

Ghotbi

Tzankov

et al. 2007

Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VI

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“…57b in comparison to Fig. 57a, it can be concluded that in the spectral range where the spectral gain bandwidth is determined by higher-order dispersion terms, the effect of the gain coefficient, Γ , is rather weak [111,142]. Figs.…”

Section: Ultrabroadband Wlc Generation In Bibomentioning

confidence: 95%

“…The concept of ultrabroadband coherent amplification (or generation, when starting from parametric superfluorescence) relies on OPA at achromatic phasematching condition, defined by zero GVM between idler and signal pulses along the direction of the signal wavevector [110]. In the case of collinear type-I interaction, this condition is always fulfilled near degeneracy (λ S ≈ λ I ), but the bandwidth can be further enhanced if the GVD of the signal and idler waves also vanishes [142,143], as in the case of BIBO, see Sect. 4.…”

Section: Ultrabroadband Wlc Amplification In Bibomentioning

confidence: 99%

Femtosecond nonlinear frequency conversion based on BiB₃O₆

Petrov¹,

Ghotbi

Kokabee

et al. 2010

Laser & Photonics Reviews

112

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We review the physical properties, linear and nonlinear optical characteristics, and phase-matching configurations of BiB3O6 (BIBO), the first low-symmetry (monoclinic) inorganic nonlinear crystal that has found broad applications for frequency conversion of laser sources from the UV, across the visible, to the near-IR based on three-wave interactions. We describe in detail the most relevant optical properties that make this material an attractive candidate for nonlinear frequency conversion of laser light in general, and ultrafast femtosecond laser sources in particular. With special focus on ultrafast frequency conversion, characteristics such as group-velocity mismatch and spectral acceptance, parametric gain bandwidth, group-velocity dispersion, as well as angular acceptance and spatial walk-off are evaluated and optimum configurations for the attainment of maximum conversion efficiency, minimum pulse duration, and highest spatial beam quality are identified and compared with the most widely established alternative borate crystal, β-BaB2O4. Experimental results are presented on both parametric up-and down-conversion of femtosecond pulses, from the high-energy, low-repetition-rate (1 kHz) to the low-energy, high-repetitionrate (56-76 MHz) regime, demonstrating the unique versatility of BIBO for efficient frequency conversion of femtosecond pulses with broad tunability from 250 nm in the UV, throughout the visible, up to ∼ 3000 nm in the IR.Photograph of a femtosecond synchronously pumped optical parametric oscillator (SPOPO) based on BiB3O6 emitting in the yellow region of the spectrum. Pumped near 400 nm in the blue by the second harmonic of a Kerr-lens mode-locked Ti:sapphire laser, the SPOPO can generate femtosecond pulses across the full visible range of 480-710 nm, from the blue-green, through to yellow, orange and red.

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“…6(b) in comparison to Fig. 6(a), it can be concluded that in the spectral range where the gain bandwidth is determined by higher order dispersion terms the effect of the gain coefficient Γ on it is rather weak [6,12]. Fig.…”

Section: Figures 4(a) and 4(b)mentioning

confidence: 63%

“…Generation of such a continuum using an ultrabroadband OPG (i.e. WLC based on pure quadratic nonlinearity) was demonstrated with picosecond pulses in KDP as early as 1982 [12] achieving a spectral range of 90 THz. Ultrabroadband gain extending over 115 THz was demonstrated recently also with an OPG based on PPKTP pumped by 1 ps pulses [13].…”

Section: Crystalmentioning

confidence: 99%

Ultrabroadband operation of a femtosecond optical parametric generator based on BiB_3O_6 in the near-IR

Gaydardzhiev¹,

Nikolov²,

Buchvarov³

et al. 2008

Opt. Express

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Ultrabroadband optical parametric generation in the near-IR (approximately 135 THz, 1.15-2.4 microm) is demonstrated using bismuth triborate, BiB(3)O(6) (BIBO), in a collinear geometry. The white light continuum energy obtained with a single stage reached 15 microJ (internal conversion efficiency of approximately 7%). Integral pulse durations as short as 63 fs were derived from the recorded FROG traces, comparable to the 45 fs pulse duration of the 1 kHz Ti:sapphire regenerative amplifier used for pumping at 800 nm.

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Parametric generation of picosecond continuum in near-infrared and visible ranges on the basis of a quadratic nonlinearity

Cited by 16 publications

References 1 publication

Optical parametric generation of high-energy femtosecond pulses in the 1-3 μm spectral range using BiB 3 O 6

Optical parametric generation of high-energy femtosecond pulses in the 1-3 μm spectral range using BiB 3 O 6

Femtosecond nonlinear frequency conversion based on BiB₃O₆

Ultrabroadband operation of a femtosecond optical parametric generator based on BiB_3O_6 in the near-IR

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Parametric generation of picosecond continuum in near-infrared and visible ranges on the basis of a quadratic nonlinearity

Cited by 16 publications

References 1 publication

Optical parametric generation of high-energy femtosecond pulses in the 1-3 μm spectral range using BiB 3 O 6

Optical parametric generation of high-energy femtosecond pulses in the 1-3 μm spectral range using BiB 3 O 6

Femtosecond nonlinear frequency conversion based on BiB3O6

Ultrabroadband operation of a femtosecond optical parametric generator based on BiB_3O_6 in the near-IR

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Femtosecond nonlinear frequency conversion based on BiB₃O₆