直接多光子飞秒红外激光激发金刚石晶格的双丰子区域并改变颜色中心

IF 1.4 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

JETP Letters Pub Date : 2024-05-03 DOI:10.1134/s0021364024600496

N. A. Smirnov, Y. S. Gulina, N. I. Busleev, P. P. Pakholchuk, A. V. Gorevoi, V. G. Vins, S. I. Kudryashov

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引用次数: 0

摘要

实验研究了 IIb 型金刚石在本征双光子吸收波长 4673 纳米处对强度为 0.17-1.7 TW/cm2 的超短激光脉冲的非线性吸收。研究表明，所研究样品的主要吸收机制是双光子吸收，其系数为 β2 = (72 ± 7) cm/TW。透射显微光谱、可见光光致发光和红外傅立叶变换显微光谱证明，在较高辐射强度下，合成 Ib 型金刚石中的氮杂质中心有可能发生激光诱导的转变。

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Direct Multiphoton Femtosecond Infrared Laser Excitation of a Diamond Lattice in the Two-Phonon Region and Modification of Color Centers

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Direct Multiphoton Femtosecond Infrared Laser Excitation of a Diamond Lattice in the Two-Phonon Region and Modification of Color Centers

The nonlinear absorption of ultrashort laser pulses with intensities of 0.17–1.7 TW/cm² at an intrinsic two-photon absorption wavelength of 4673 nm in type IIb diamond has been studied experimentally. It has been shown that the main absorption mechanism in the studied sample is two-photon absorption with a coefficient of β₂ = (72 ± 7) cm/TW. Transmission microspectroscopy, visible photoluminescence, and infrared Fourier-transform microspectroscopy have demonstrated the possibility of laser-induced transformation of nitrogen impurity centers in synthetic type Ib diamond at higher radiation intensities.

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来源期刊

JETP Letters 物理-物理：综合

CiteScore

2.40

自引率

30.80%

发文量

164

审稿时长

3-6 weeks

期刊介绍： All topics of experimental and theoretical physics including gravitation, field theory, elementary particles and nuclei, plasma, nonlinear phenomena, condensed matter, superconductivity, superfluidity, lasers, and surfaces.