Thermal tuning hollow laser and zooming system

• Main Authors: HE JIAXIN, JIA MENGHAN, DU ZHENHUA, XIA JING, ZHANG QIAN, CHO CHEOL-HYUN, LYU YANFEI
• Format: Patent
• Language: Chinese; English
• Published: 27.05.2022
• Subjects: BASIC ELECTRIC ELEMENTS; DEVICES USING STIMULATED EMISSION; ELECTRICITY

The invention relates to a thermal tuning hollow laser and a zooming system. The thermal tuning hollow laser comprises a semiconductor laser array, and a hollow coupling light system, a gain medium, the zooming system, a crystal axicon and a collimation axicon which are sequentially arranged along a laser emitting direction, the thermal lens focal length of the gain medium is changed along with the power change of laser emitted by the semiconductor laser array, and the gain medium is used for obtaining tunable hollow laser; the zoom system is used for compensating the thermal lens effect of the gain medium. The tunable hollow laser is realized by utilizing the thermal lens effect of the gain medium, and the output quality of the hollow laser beam is improved by dynamically compensating the thermal lens effect of the gain medium. 本发明涉及一种热调谐空心激光器及变焦系统，热调谐空心激光器包括半导体激光阵列及沿激光出射方向依次设置的空心耦合光系统、增益介质、变焦系统、晶体轴锥和准直轴锥；增益介质的热透镜焦距随半导体激光阵列出射的激光的功率改变而改变，用于获取可调谐空心激光；变焦系统用于对增益介质的热透镜效应进行补偿。本发明利用增益介质的热透镜效应实现了可调谐空心激光，而且通过动态补偿增益介质