Colored conical emission in BBO crystal induced by intense femtosecond pulses

Bi, Jie; Liu, Xing; Li, Yuhua; Lu, Peixiang

doi:10.1016/j.optcom.2010.09.053

Cited by 5 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5 CE angular spectra experimentally measured are compared with those of three theoretical models in BK-7 glass explain the angular features of CEs along with SC adequately. However it may have some comparability in explaining blue-green CE by means of second harmonic generation (SHG) [22].…”

Section: Fwm Modelmentioning

confidence: 99%

Angular feature of conical emission in an isotropic amorphous medium pumped by femtosecond pulses

2011

Front. Optoelectron. China

Self Cite

View full text Add to dashboard Cite

Broadband parametric upconverted conical emission (CE) has been investigated in an isotropic amorphous medium pumped by femtosecond laser pulses, which covers a broad range from 470 to 630 nm. Three theoretical models were analyzed to interpret the angular beam of CE. The CE spectra and their angular positions have been experimentally measured, which can be explained well by nonlinear X-wave model and Cerenkov type phase matching model rather than four-wave mixing (FWM) model.

show abstract

Section: Fwm Modelmentioning

confidence: 99%

Angular feature of conical emission in an isotropic amorphous medium pumped by femtosecond pulses

2011

Front. Optoelectron. China

Self Cite

View full text Add to dashboard Cite

show abstract

“…Femtosecond laser filamentation could produce some nonlinear phenomena such as supercontinuum spectra, [1,2] conical radiation, [3,4] high order harmonic emissions, [5,6] and terahertz (THz) emissions. [7,8] Cook and Hochstrasser first introduced the THz radiation generated by femtosecond laser plasma filament in the air.…”

Section: Introductionmentioning

confidence: 99%

Influence of cutting off position of plasma filament formed by two-color femtosecond laser on terahertz generation

Xue¹,

Shang²,

Deng³

et al. 2018

Chinese Phys. B

View full text Add to dashboard Cite

Femtosecond laser filamentation is a method of generating terahertz, which has wide application in terahertz subwavelength resolution imaging. In this paper, the plasma filament formed by femtosecond laser focusing was terminated with an alumina ceramics at different positions and the influence of the cutting off position of the plasma filament on the terahertz wave was studied. The results showed that the terahertz amplitude increases as the position approaches the end of the filament gradually. The stability of amplitude and peak frequency of the terahertz generated by the filament formed by two-color femtosecond laser via a lens with a longer focal length is lower than that through a lens with a shorter focal length, especially the terahertz amplitude at the end of the filament. The study will be helpful for future researchers in the field of THz sub-wavelength imaging utilizing femtosecond laser filament.

show abstract

“…For example, away from phase-matching conditions of second-harmonic generation (SHG), BBO and KDP crystals could produce white-light supercontinuum (WLSC) in the center of the beam and colored conical emission (CCE) rings surrounding the white core [11,12]. Interestingly, when the phase-matching condition for SHG is satisfied, the spatiotemporally coupled modulation instability in a quadratic crystal can result in a series of bright cyan rings [13][14][15]. The generated broadband tunable correlated photons [16] could have potential applications in quantum network [17], quantum memory [18], etc.…”

Section: Introductionmentioning

confidence: 99%

Broadband colored-crescent generation in a singleβ-barium-borate crystal by intense femtosecond pulses

et al. 2011

View full text Add to dashboard Cite

A visible colored crescent with a bandwidth broader than 220 nm is observed experimentally by loosely focused femtosecond pulses in a bulk quadratic nonlinear crystal (β-BBO crystal) at certain incident angles. Through the analysis based on a simple collinear phase-matching model, we suggest that the colored crescent might be the coexistence of spontaneous parametric down-conversions (SPDCs) in the infrared range and the corresponding efficient second-order harmonic generations (SHGs) that occur in a wide spectrum. We further provide a possible mechanism for the SHG process in which the phase-mismatching angles of the frequency doubling of SPDCs in β-BBO crystal are assumed to be compensated by the strong diffraction effect during the self-focusing process of the generated intense SPDC signals.

show abstract

Colored conical emission in BBO crystal induced by intense femtosecond pulses

Cited by 5 publications

References 20 publications

Angular feature of conical emission in an isotropic amorphous medium pumped by femtosecond pulses

Angular feature of conical emission in an isotropic amorphous medium pumped by femtosecond pulses

Influence of cutting off position of plasma filament formed by two-color femtosecond laser on terahertz generation

Broadband colored-crescent generation in a singleβ-barium-borate crystal by intense femtosecond pulses

Contact Info

Product

Resources

About