Narrow Linewidth Frequency-Doubled Yellow-Orange Vertical-External-Cavity Surface-Emitting Laser: An Innovative Approach to Compact Low-Cost Sodium Guidestar Laser

目的：提出一种研制高功率单模黄橙激光器的创新方法。我们的目标是利用腔内倍频高功率垂直外腔面发射激光器（VECSEL），开发一种589.159 nm（钠D2线）的紧凑型低成本钠导星激光器，其功率超过10 W，线宽窄（10-100 MHz）。通过腔内波长调谐，我们将展示570- 590nm的多瓦单频激光器，这是许多应用所需要的。智力优势：这是第一次尝试几十瓦倍频单纵模可见VECSEL。为了实现我们的目标，我们提议；(1)结合多芯片1170-1180 nm VECSEL配置的面积功率缩放；(2)通过腔内Lyot滤波器、腔长控制和自注入锁定实现纵向模式选择和稳定。将研究VECSEL设计优化、功率缩放和自注入锁定的非线性效应。更广泛的影响：本提案的更广泛影响是显著的。首先，它将极大地影响高功率单模半导体激光器领域。它将为在难以到达的波长范围内开发高功率激光器提供一种新的途径。该激光器将为各个领域的一系列应用提供关键工具。其次，本研究涵盖材料、非线性光学、半导体物理和光子学等多个理工科学科，为研究生和本科生提供了独特的培训机会。最后，建议的研究结果将通过技术出版物和演讲与研究人员、工程师和教育工作者分享。

Objective: We propose an innovative approach to develop high-power single-mode yellow-orange laser. Our objective is to develop a compact low-cost sodium guidestar laser at 589.159 nm (Sodium D2 line) with over 10 W power and narrow linewidth (10-100 MHz) using intra-cavity frequency-doubling of high power vertical-external-cavity surface-emitting laser (VECSEL). By intra-cavity wavelength tuning, we will demonstrate multi-Watt single-frequency lasers in the 570-590 nm, desirable for numerous applications.Intellectual Merit: This is the first attempt to tens of Watts of frequency-doubled single-longitudinal-mode visible VECSEL. To achieve our goal we propose to; (1) combine the area power scaling in multi-chip 1170-1180 nm VECSEL configuration; (2) with efficient intra-cavity frequency doubling for yellow generation, and (3) longitudinal mode selection and stabilization, by an intracavity Lyot filter, cavity length control and self-injection locking. The VECSEL design optimization, power scaling, and nonlinear effects of self-injection locking will be investigated. Broader Impacts: The broader impact of this proposal is significant. First, it will greatly impact the field of high-power single-mode semiconductor lasers. It will provide a novel approach for the development of high-power lasers in hard-reaching wavelength bands. The laser will provide a key tool for a range of applications in various fields. Second, this research covers multiple disciplines in science and engineering including materials, nonlinear optics, semiconductor physics and photonics, providing a unique training opportunity for our graduate and undergraduate students. Finally, the results of the proposed research will be shared with researcher, engineers and educators through technical publications and presentations.