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Updated: Jul 23, 2026

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
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Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing

Published on: December 3, 2013

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轴距测量方法基于波长分割复杂化与全纤维微波光子混合

Zhenxin Yu, Fajie Duan, Xiao Fu

    Optics express
    |February 1, 2024
    PubMed
    概括

    本研究介绍了一种新的方法,用于测量旋转机-定向器轴距,使用波长分割复杂化 (WDM) 和全纤维微波光子混合,实现高精度和广泛的测量范围.

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    Electronic Distance Measuring Instruments01:30

    Electronic Distance Measuring Instruments

    Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short distances...