II-class non-critical phase matching-based frequency doubling device of resonant enhancement cavity

• Main Authors: PENG QINJUN, XU ZUYAN, ZHANG SHENJIN, WANG MINGQIANG, ZHANG FENGFENG, ZONG NAN, WANG ZHIMIN, YANG FENG
• Format: Patent
• Language: Chinese; English
• Published: 03.11.2017
• Subjects: BASIC ELECTRIC ELEMENTS; DEVICES USING STIMULATED EMISSION; ELECTRICITY

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 difference between the first polarized light component and the second polarized light component of the fundamental frequency light passing through the first non-linear crystal is integral times of 2Pi, the second non-linear crystal is used for enabling the fundamental frequency light passing thro