Frequency doubling in PPLN depressed-cladding waveguides written by femtosecond laser

Zhang, Bin; Li, Lingqi; Lu, Qingming; Wang, Lei; Chen, Feng

doi:10.1016/j.optmat.2022.112074

Optical Materials

2022

DOI: 10.1016/j.optmat.2022.112074

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Frequency doubling in PPLN depressed-cladding waveguides written by femtosecond laser

Bin Zhang

Lingqi Li

Qingming Lu

et al.

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2024

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Cited by 3 publications

References 34 publications

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Nonlinear waveguides by femtosecond laser writing of lithium triborate crystals

Zhang¹,

Li²,

Li³

et al. 2022

J. Opt.

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Nonlinear optical waveguides play a crucial role in the wavelength/frequency conversion of light. Femtosecond laser direct writing is an efficient and flexible technique to produce waveguides in dielectrics. We report on the nonlinear waveguides in LiB3O5 crystals by femtosecond laser writing. The double-line and depressed-cladding structures inscribed by femtosecond laser pulses show excellent guiding properties at 405 nm or 810 nm for both TE and TM polarized light. The investigations of the confocal micro-Raman spectroscopy have indicated that lattice structures in waveguide cores remain almost unchanged compared with those of the bulk. Based on type-I phase matching condition, both second harmonic generation of 810 nm and spontaneous parametric down conversion of 405 nm have been obtained in the laser-written LBO waveguides, suggesting potential applications in integrated nonlinear optics and quantum photonics.

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Nonlinear waveguides by femtosecond laser writing of lithium triborate crystals

Zhang¹,

Li²,

Li³

et al. 2022

J. Opt.

Self Cite

View full text Add to dashboard Cite

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A Brief Review on Nonlinear Photonic Crystals Induced by Direct Femtosecond Laser Writing

Tian

Yan

et al. 2023

Photonics

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Direct femtosecond laser writing or inscription is a useful technique, and it has been employed to engineer various materials in many applications including nonlinear photonic crystals, which are of periodically patterned second-order nonlinearity to get and control the coherent light at new frequencies. By manipulation of second-order nonlinearity, either erased or poled, quasi-phase matching has been achieved in several crystals, especially three-dimensional nonlinear photonic crystals have been originally proposed and proved to be truly three-dimensional. Here we shortly review on the recent advances in the research field of nonlinear photonic crystals inscribed by femtosecond laser, as well as look into the future in this field.

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超快激光在铌酸锂内部诱导微纳光子结构研究进展（特邀）

Zhang Bo,

Wang Ziquan,

Wang Zhuo

et al. 2024

激光与光电子学进展

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Frequency doubling in PPLN depressed-cladding waveguides written by femtosecond laser

Cited by 3 publications

References 34 publications

Nonlinear waveguides by femtosecond laser writing of lithium triborate crystals

Nonlinear waveguides by femtosecond laser writing of lithium triborate crystals

A Brief Review on Nonlinear Photonic Crystals Induced by Direct Femtosecond Laser Writing

超快激光在铌酸锂内部诱导微纳光子结构研究进展（特邀）

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