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

L. Wang; Y. X. Fan; H. Zhu; Z. D. Yan; H. Zeng; H. T. Wang; S. N. Zhu; Z. L. Wang

doi:10.1103/PhysRevA.84.063831

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

L. Wang, Y. X. Fan, H. Zhu, Z. D. Yan, H. Zeng, H. T. Wang, S. N. Zhu, Z. L. Wang

Institute for Advanced Study in Precision Spectroscopy

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

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.

Original language	English
Article number	063831
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	84
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevA.84.063831
State	Published - 13 Dec 2011

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title = "Broadband colored-crescent generation in a single β-barium-borate crystal by intense femtosecond pulses",

abstract = "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.",

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doi = "10.1103/PhysRevA.84.063831",

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T1 - Broadband colored-crescent generation in a single β-barium-borate crystal by intense femtosecond pulses

AU - Wang, L.

AU - Fan, Y. X.

AU - Zhu, H.

AU - Yan, Z. D.

AU - Zeng, H.

AU - Wang, H. T.

AU - Zhu, S. N.

AU - Wang, Z. L.

PY - 2011/12/13

Y1 - 2011/12/13

N2 - 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.

AB - 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.

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DO - 10.1103/PhysRevA.84.063831

M3 - 文章

AN - SCOPUS:83655202615

SN - 1050-2947

VL - 84

JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

IS - 6

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ER -

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

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