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二次谐波产生技术能有效扩展现有的激光波段,被广泛应用于原子分子物理、光物理、生物医学等多个领域。倍频腔的长期锁定是倍频技术中的一项关键技术,它直接关系到输出激光的功率稳定性和可靠性,目前的商用二次谐波产生激光器都会存在不同程度上的失锁状态。提出了一种基于积分扫描来实现连续激光倍频器自锁定的方案,能在没有人为调节的情况下连续工作,不需要额外的功率监测和扫描信号,失锁后可自动恢复锁定,最终实现了长期稳定的二次谐波产生激光输出。
The second harmonic generation technology can effectively expand the existing laser band and is widely used in many fields such as atomic and molecular physics, photophysics and biomedicine. Long-term locked double-frequency cavity is a key technology in the frequency doubling technology, which is directly related to the output laser power stability and reliability, the current commercial second harmonic generation lasers will exist in varying degrees of out of lock state. A scheme based on integral scanning to realize continuous laser doubler self-locking is proposed. It can work continuously without man-made adjustment, does not need additional power monitoring and scanning signals, and automatically regains locking after losing lock. Finally, Long-term stability of the second harmonic laser output.