Research Progress of Yellow-orange Laser Crystals and Their All-solid-state Laser Devices

doi:10.15541/jim20250471

Abstract

Abstract: Laser wavelength is a critical parameter that determines the applicability and effectiveness of laser sources among various fields. The extension of laser wavelengths has been a long-standing task in laser physics and laser technology. Among various spectral regions, yellow-orange lasers—characterized by high eye sensitivity, excellent color rendering, and strong atmospheric penetration—have attracted significant attention for their wide applications in biomedical imaging, laser therapy, display technology, environmental sensing, optical communications, and so on. This review aims to summarize the recent advances in yellow-orange laser crystals and all-solid-state laser devices. It contains four main categories of approaches: blue diode-pumped Dy³⁺/Tb³⁺ doped crystal materials, nonlinear sum-frequency-generation (SFG), Raman laser crystals, and the emerging function-integrated laser crystals. A detailed comparison of their technical characteristics and performances has been provided. Notably, a novel class of function-integrated yellow-orange laser crystals based on electron-phonon coupling effects has been investigated by many leading groups. These novel crystal materials enable efficient wavelength extension through enhanced energy transfer between electronic transitions and phonon vibrations, thus offering a promising alternative to change the laser wavelengths, especially at yellow-orange region. Such phonon-coupled laser devices exhibit remarkable advantages, including wide wavelength tunability, high conversion efficiency, low cost, and high integration capability. Consequently, they have garnered widespread interest within the global laser research community and are paving the new way for practical applications in laser medicine, high-fidelity displays, remote sensing, and other advanced photonic systems. Finally, this review outlines prospective research directions and anticipates potential breakthroughs in the design, synthesis, and application of yellow-orange laser crystal materials.

Key words: laser crystal, all-solid-state yellow laser, crystal growth, laser property

CLC Number:

TQ174

SI Huichen, LIANG Fei, YU Haohai, ZHANG Huaijin. Research Progress of Yellow-orange Laser Crystals and Their All-solid-state Laser Devices[J]. Journal of Inorganic Materials, DOI: 10.15541/jim20250471.

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