Correlation Spectroscopy with Noise Light Excitation

噪声光激发相关光谱

• 批准号: 07554013
• 负责人: KOHMOTO Toshiro
• 金额: $ 3.26万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07554013/
• 关键词: noise light; laser spectroscopy; correlation spectroscopy; spectrum analysis

A high-resolution spectroscopy with noise light excitation is studied. This spectroscopy is based on broad-band excitation with noise light, wave-form correlation, and Fourier analysis.A noise-excitation spectroscopy in Rb atoms was examined to clarify the mechanism of the signal generation on the Fourier spectra obtained from the two types of correlation. The Zeeman signals of the ground and the excited states of the D_1 transition were observed on the Fourier spectra of the transmission and the emission wave forms, the signals obtained from auto-and cross-correlations were compared, and the line shapes of the observed signals were analyzed by using a linear response theory.The principle of the noise-excitation spectroscopy is derived from the theory of linear systems ; linear time-independent systems can be characterized by the response to a stochastic perturbation with a frequency-independent power spectrum, usually called white random noise. The characteristic of the noise-excitation spectroscopy is as follows. High resolution ; the frequency resolution is determined by the inverse of the measuring time and independent of the spectral width of the light source. High sensitivity ; the signal-to-noise ratio for sharp lines is large as compared with conventional frequency-sweep method. Spectra of absorption and dispersion types can be obtained at the same time. The effect of inhomogeneous broadening can be removed.

研究了噪声光激发下的高分辨光谱学。该光谱是基于噪声光宽带激发、波形关联和傅里叶分析的，通过对Rb原子的噪声激发光谱的研究，阐明了两种关联的傅里叶光谱信号产生的机制.在透射和发射波形的傅里叶谱上观测到D_1跃迁基态和激发态的塞曼信号，比较了自相关和互相关信号，并用线性响应理论分析了观测信号的线形。线性时间无关系统的特征在于对具有频率无关功率谱的随机扰动的响应，通常称为白色随机噪声。噪声激发光谱的特性如下。高分辨率;频率分辨率由测量时间的倒数确定，并且与光源的光谱宽度无关。灵敏度高，与常规扫频法相比，对尖线的信噪比大。可以同时获得吸收型和色散型的光谱。可以消除不均匀加宽的影响。

项目成果

M.Misono: "Correlation Spectroscopy with Noise Light Excitation" Phys. Rev. A. (in press).

M.Misono：“相关光谱与噪声光激发”物理。

T.Kohmoto: "Noise Excitation Spectroscopy in Rb Atoms" Prog. Crystal Growth and Charact.33. 367-370 (1996)

T.Kohmoto：“Rb 原子中的噪声激发光谱”Prog。

M. Misono: "Correlation Spectroscopy with Noise Light Excitation" Phys. Rev. A. (in press). (1997)

M. Misono：“相关光谱与噪声光激发”物理。

T. Kohmoto: "Hole Burning in a Well-Characterized Noise Field : Nonadherence to the Bloch Equations" Physical Review B. 52. 13475-13479 (1995)

T. Kohmoto：“在良好表征的噪声场中烧孔：不遵守布洛赫方程”物理评论 B. 52. 13475-13479 (1995)

T. Kohmoto: "Hole-Burning in a Well-Characterized Noise Field: Nonadherence to the Bloch Equations" Phys. Rev. B. 52. 13475-13479 (1995)

T. Kohmoto：“在良好表征的噪声场中烧孔：不遵守布洛赫方程” Phys。