新型Sr0.86Ba0.14MoO4拉曼晶体的多波长stokes -反stokes高瞬态SRS组合频移

IF 1.1 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY
Yu. A. Kochukov, K. A. Gubina, D. P. Tereshchenko, A. G. Papashvili, V. E. Shukshin, I. S. Voronina, L. I. Ivleva, V. V. Bulgakova, P. A. Chizhov, A. A. Ushakov, S. N. Smetanin
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引用次数: 0

摘要

本文首次将单相阳离子Sr0.86Ba0.14MoO4固溶体作为活性介质,在双(主、次)拉曼模式下通过受激拉曼散射(SRS)产生多波长。当被亚皮秒激光泵浦,具有可控啁啾辐射脉冲(波长为1030 nm)时,与原始SrMoO4晶体相比,获得了更多的Stokes辐射分量(最多6个)的单次高瞬态SRS。这可以用固体溶液中二次拉曼模式的光谱宽度和相对强度的增加来解释。此外,由于Stokes-anti-Stokes参数拉曼相互作用的相位失配较小,在二次拉曼模式上产生了低频偏移,同时获得了高效的反stokes SRS。stokes -反stokes SRS转换的总效率达到33%,啁啾泵浦脉冲的最佳持续时间为2 ps。这使得所获得的简单多波长辐射源不仅在第二(1000-1350 nm),而且在生物组织透明的第一(650-950 nm)治疗窗口中用于多光子显微镜和光动力治疗。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Multiwavelength, Stokes-Anti-Stokes, Highly Transient SRS with Combined Frequency Shifts in a New Sr0.86Ba0.14MoO4 Raman Crystal

For the first time to our knowledge, a single-phase cationic Sr0.86Ba0.14MoO4 solid solution was used as an active medium for multiwavelength generation via stimulated Raman scattering (SRS) on dual (primary and secondary) Raman modes. When pumped by a subpicosecond laser with controllable chirping of radiation pulses (at a wavelength of 1030 nm), single-pass highly transient SRS generation of a larger number of Stokes radiation components (up to six) was obtained as compared to the original SrMoO4 crystal. This is explained by the increase in the spectral width and relative intensity of the secondary Raman mode in the solid solution. In addition, simultaneous efficient anti-Stokes SRS generation was obtained, especially with a low-frequency shift on the secondary Raman mode due to the small phase mismatch of the Stokes–anti-Stokes parametric Raman interaction. The total efficiency of the Stokes–anti-Stokes SRS conversion reached 33% with an optimal duration of chirped pumping pulses of 2 ps. This makes the obtained simple a source of multiwavelength radiation attractive for use in multiphoton microscopy and photodynamic therapy not only in the second (1000–1350 nm) but also in the first (650–950 nm) therapeutic window of biological tissue transparency.

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来源期刊
Physics of Wave Phenomena
Physics of Wave Phenomena PHYSICS, MULTIDISCIPLINARY-
CiteScore
2.50
自引率
21.40%
发文量
43
审稿时长
>12 weeks
期刊介绍: Physics of Wave Phenomena publishes original contributions in general and nonlinear wave theory, original experimental results in optics, acoustics and radiophysics. The fields of physics represented in this journal include nonlinear optics, acoustics, and radiophysics; nonlinear effects of any nature including nonlinear dynamics and chaos; phase transitions including light- and sound-induced; laser physics; optical and other spectroscopies; new instruments, methods, and measurements of wave and oscillatory processes; remote sensing of waves in natural media; wave interactions in biophysics, econophysics and other cross-disciplinary areas.
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