一种基于Ⅱ类非临界相位匹配的共振增强腔倍频装置

• Format: Patent
• Language: Chinese
• Published: 17.12.2019
• Subjects: BASIC ELECTRIC ELEMENTS; DEVICES USING STIMULATED EMISSION; ELECTRICITY

本发明公开了一种基于Ⅱ类非临界相位匹配的共振增强腔倍频装置，包括：至少由输入耦合镜、输出耦合镜、第一非线性晶体和第二非线性晶体组成的共振增强腔；其中，所述输入耦合镜用于将基频光耦合入所述共振增强腔；所述第一非线性晶体用于对通过所述第一非线性晶体内的基频光的第一偏振光分量与第二偏振光分量进行相位补偿，以使从所述第一非线性晶体通过的基频光的第一偏振光分量和第二偏振光分量的相位差为2π的整数倍；所述第二非线性晶体用于使通过所述第二非线性晶体内的基频光满足第Ⅱ类非临界相位匹配条件，以得到从所述第二非线性晶体产生并输出的倍频光；所述输出耦合镜用于将所述共振增强腔内的倍频光输出。 The invention discloses an II-class non-critical phase matching-based frequency doubling device of a resonant enhancement cavity. The frequency doubling device comprises the resonant enhancement cavity, wherein the resonant enhancement cavity at least comprises an input coupling mirror, an output coupling mirror, a first non-linear crystal and a second non-linear crystal, the input coupling mirror is used for coupling fundamental frequency light to the resonant enhancement cavity, the first non-linear crystal is used for performing phase compensation on a first polarized light component and a second polarized light component of the fundamental frequency light passing through the first non-linear crystal so that phase differenc