激光脉宽对熔融石英中超连续光谱的影响

doi:10.7523/j.issn.2095-6134.2021.01.007

中国科学院大学学报 ›› 2021, Vol. 38 ›› Issue (1): 49-53.DOI: 10.7523/j.issn.2095-6134.2021.01.007

激光脉宽对熔融石英中超连续光谱的影响

许梦宁, 展林弟, 奚婷婷

中国科学院大学物理科学学院, 北京 101408

收稿日期:2019-05-05 修回日期:2019-05-24 发布日期:2021-03-05
通讯作者: 奚婷婷
基金资助:
国家自然科学基金（11774038，11874056，11474039）资助

Influence of pulse duration on the supercontinuum generation from femtosecond laser filamentation in fused silica

XU Mengning, ZHAN Lindi, XI Tingting

School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 101408, China

Received:2019-05-05 Revised:2019-05-24 Published:2021-03-05

摘要/Abstract

摘要： 理论研究飞秒激光脉宽、啁啾和初始光谱对其在熔融石英中成丝产生的超连续光谱的影响。结果表明：在固定能量下，脉宽越大，蓝移截止波长越长，光谱强度越低。对脉宽大于150 fs的激光，负啁啾脉冲比无啁啾和正啁啾脉冲产生的蓝移光谱强度更大。

关键词: 飞秒激光脉宽, 熔融石英, 啁啾脉冲, 超连续光谱

Abstract: The influences of the pulse duration, chirp， and initial spectrum of the femtosecond laser on the supercontinuum generated in fused silica have been investigated theoretically. Results show that, with the increase of the pulse duration, the cut-off wavelength of the blue-extension becomes longer and the spectral intensity becomes lower at the constant energy. For the laser with pulse duration larger than 150 fs, the spectral intensity of the blue-extension generated by the negatively chirped pulse is higher than those generated by the freely-chirped pulse and the positively chirped pulse.

Key words: pulse duration, fused silica, chirped pulse, supercontinuum

中图分类号:

O561.4

许梦宁, 展林弟, 奚婷婷. 激光脉宽对熔融石英中超连续光谱的影响[J]. 中国科学院大学学报, 2021, 38(1): 49-53.

XU Mengning, ZHAN Lindi, XI Tingting. Influence of pulse duration on the supercontinuum generation from femtosecond laser filamentation in fused silica[J]. Journal of University of Chinese Academy of Sciences, 2021, 38(1): 49-53.

参考文献

[1] Couairon A, Mysyrowicz A. Femtosecond filamentation in transparent media[J]. Physics Reports, 2007, 441(2-4):47-189.
[2] Kasparian J. White-light filaments for atmospheric analysis[J]. Science, 2003, 301(5629):61-64.
[3] Tu H H, Boppart S A. Coherent fiber supercontinuum for biophotonics[J]. Laser & Photonics Reviews, 2013, 7(5):628-645.
[4] Demmler S, Rothhardt J, Heidt A M, et al. Generation of high quality 1.3 cycle pulses by active phase control of an octave spanning supercontinuum[J]. Optics Express, 2011, 19(21):20151-20158.
[5] Li D W, Zhang L Z, Xi T T, et al. High spectral energy density supercontinuum generation in fused silica by interfering two femtosecond laser beams[J]. Journal of Optics, 2019, 21(6):065501.
[6] Borrego-Varillas R, Romero C, Mendoza-Yero O, et al. Femtosecond filamentation in sapphire with diffractive lenses[J]. Journal of the Optical Society of America B, 2013, 30(8):2059-2065.
[7] Chang J W, Xu M N, Wang D, et al. Control of filament by shaped femtosecond pulses in fused silica[J]. Acta Optica Sinica, 2019, 39(1):0126021.
[8] Zhan L D, Xu M N, Xi T T, et al. Contributions of leading and tailing pulse edges to filamentation and supercontinuum generation of femtosecond pulses in air[J]. Physics of Plasmas, 2018, 25(10):103102.
[9] Bergé L, Mauger S, Skupin S. Multifilamentation of powerful optical pulses in silica[J]. Physical Review A, 2010, 81(1):013817.
[10] Skupin S, Bergé L. Supercontinuum generation of ultrashort laser pulses in air at different central wavelengths[J]. Optics Communications, 2007, 280(1):173-182.
[11] Nuter R, Skupin S, Bergé L. Chirp-induced dynamics of femtosecond filaments in air[J]. Optics Letters, 2005, 30(8):917.
[12] Sun Q, Asahi H, Nishijima Y, et al. Pulse duration dependent nonlinear propagation of a focused femtosecond laser pulse in fused silica[J]. Optics Express, 2010, 18(24):24495-24503.
[13] Calendron A L, Çankaya H, Cirmi G, et al. White-light generation with sub-ps pulses[J]. Optics Express, 2015, 23(11):13866-13879.
[14] Rolle J, Bergé L, Duchateau G, et al. Filamentation of ultrashort laser pulses in silica glass and KDP crystals:a comparative study[J]. Physical Review A, 2014, 90(2):023834.
[15] Malitson I H. Interspecimen comparison of the refractive index of fused silica[J]. Journal of the Optical Society of America, 1965, 55:1205-1208.

激光脉宽对熔融石英中超连续光谱的影响

Influence of pulse duration on the supercontinuum generation from femtosecond laser filamentation in fused silica

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 0

编辑推荐

Metrics

本文评价

访问统计

联系我们