1030 纳米超短激光脉冲对天然钻石色心的双光子吸收系数测量

IF 0.8 4区物理与天体物理 Q4 OPTICS Optics and Spectroscopy Pub Date : 2024-04-01 DOI:10.1134/s0030400x23100089

Yu. S. Gulina

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引用次数: 0

摘要

摘要对超短激光脉冲在天然金刚石块体中的非线性吸收过程进行了实验研究。实验研究测量了 1 毫米厚的平面平行板的非线性透射率，该板由金刚石制成，用微型透镜（NA = 0.55，焦距 f ' = 5 毫米）聚焦照射波长为 1030 纳米的 0.3 和 10 ps 激光脉冲。结果表明，在该样品中，强度不超过 10 TW/cm2 的 1030 nm 波长超短激光脉冲的主要衰减机制是颜色中心的双光子吸收，吸收系数 β2 = 4.1 ± 0.3 cm/TW。

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Measurement of Two-Photon Absorption Coefficient of 1030 nm Ultrashort Laser Pulses on Natural Diamond Color Centers

Abstract

An experimental study of nonlinear absorption process of ultrashort laser pulses in bulk of natural diamond has been carried out. The results of experimental studies on measuring nonlinear transmission of 1 mm thick plane-parallel plate made of diamond irradiated with focused by micro lens (NA = 0.55 with focal length f ' = 5 mm) 0.3 and 10 ps laser pulses with 1030 nm wavelength are presented. It is shown that in this sample the main attenuation mechanism of ultrashort laser pulses with 1030 nm wavelength at intensities not exceeding 10 TW/cm² is two-photon absorption at color centers, the absorption coefficient β₂ = 4.1 ± 0.3 cm/TW is determined.

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来源期刊

Optics and Spectroscopy 物理-光谱学

CiteScore

1.60

自引率

0.00%

发文量

审稿时长

4.5 months

期刊介绍： Optics and Spectroscopy (Optika i spektroskopiya), founded in 1956, presents original and review papers in various fields of modern optics and spectroscopy in the entire wavelength range from radio waves to X-rays. Topics covered include problems of theoretical and experimental spectroscopy of atoms, molecules, and condensed state, lasers and the interaction of laser radiation with matter, physical and geometrical optics, holography, and physical principles of optical instrument making.