Laser & Optoelectronics Progress, Volume. 60, Issue 23, 2300001(2023)
China's Top 10 Optical Breakthroughs: Electron-Phonon Coupling Effect and Laser Wavelength Extension
Electron-phonon coupling effect is an important physical phenomenon for laser wavelength extension in solid-state laser materials. This review summarized the history of tunable solid-state lasers, namely, color-center, transition-metal, and rare-earth lasers, focusing on the spectral homogeneous broadening induced by the electron-phonon coupling effect. Recently, based on the multiphonon-coupling theory, an ultrabroadband laser emission far beyond the fluorescence spectrum was reported,thus greatly extending the available laser wavelengths. Moreover, various self-frequency doubling lasers were developed by combining the multiphonon-coupling and nonlinear-optical-conversion into one single crystal, thereby creating some low-cost and compact visible laser modules, covering the cyan-green-yellow-orange-red spectral range. These newly developed laser sources can meet the urgent demand of laser-based surgery and laser display applications, which can push and promote the rapid development of the all-solid-state laser technology.
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Fei Liang, Cheng He, Yanfeng Chen, Haohai Yu, Huaijin Zhang. China's Top 10 Optical Breakthroughs: Electron-Phonon Coupling Effect and Laser Wavelength Extension[J]. Laser & Optoelectronics Progress, 2023, 60(23): 2300001
Category: China's Top 10 Optical Breakthroughs Special Column
Received: Sep. 12, 2023
Accepted: Oct. 17, 2023
Published Online: Dec. 11, 2023
The Author Email: Chen Yanfeng (yfchen@nju.edu.cn), Yu Haohai (haohaiyu@sdu.edu.cn), Zhang Huaijin (huaijinzhang@sdu.edu.cn)