Generating broadband tunable visible lasers via SPM-SFG in RECOB crystals

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-05-15 DOI:10.1016/j.optlastec.2025.113078

Xuezhi Zhao , Zhixin Wu , Zhengping Wang , Xinguang Xu

引用次数: 0

Abstract

A cascading effect consist of self-phase modulation and sum-frequency generation (SPM-SFG) is found in RECa₄O(BO₃)₃ (RE = Y, Gd) crystals, which can directly convert a 1540 nm ultrafast laser into tunable visible laser. For a YCa₄O(BO₃)₃ (YCOB) crystal, the tunable wavelength range was measured to be 450–770 nm, and the maximum optical conversion efficiency was 10.4 %, when the output wavelength is 630 nm. For a GdCa₄O(BO₃)₃ (GdCOB) crystal, the tunable outputs were obtained from 485 to 770 nm, with a peak conversion efficiency of 8.7 % at 622 nm. These results manifest that SPM-SFG is a very convenient, effective method for achieving tunable ultrafast lasers in visible waveband.

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在RECOB晶体中利用SPM-SFG产生宽带可调谐可见激光器

在reca40o (BO3)3 （RE = Y, Gd）晶体中发现了自相位调制和和频产生的级联效应（SPM-SFG），可以直接将1540 nm超快激光转换为可调谐可见光激光。yca40 (BO3)3 （YCOB）晶体在输出波长为630 nm时，可调谐波长范围为450 ~ 770 nm，最大光转换效率为10.4%。对于gdca40 (BO3)3 （GdCOB）晶体，在485 ~ 770 nm范围内可调谐输出，在622 nm处的峰值转换效率为8.7%。这些结果表明，SPM-SFG是实现可见光波段可调谐超快激光器的一种非常方便、有效的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems