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根据微片激光器工作温度、增益介质发射谱和谐振波长三者的关系,研究了双频Nd:YVO4微腔激光器的功率均衡机制。在实验中,通过温控调节双频激光波长和发射谱的相对漂移,实现了双频激光的相对功率可调。实验结果表明,当激光器温度在2.5~22.5℃范围增加时,双频激光的右峰/左峰相对功率比从6.471变化到0.028;当温控在9.1℃时,双频激光的相对功率比约为1.00∶1.00,实现了功率均衡;当温控在7.5℃时,双频激光的相对功率比为1.89∶1.00,此时双频激光的功率乘积最大,可实现最高拍频效率。
According to the relationship between the working temperature of the microchip laser, the emission spectrum of the gain medium and the resonant wavelength, the power balance mechanism of the dual-frequency Nd: YVO4 microcavity laser is studied. In the experiment, the relative power of the dual-frequency laser can be adjusted by adjusting the relative drift of the dual-frequency laser wavelength and the emission spectrum by temperature control. Experimental results show that when the laser temperature is in the range of 2.5 ~ 22.5 ℃, the relative power ratio of the right peak / left peak of dual-frequency laser changes from 6.471 to 0.028. When the temperature is controlled at 9.1 ℃, the relative power of dual- When the temperature is 7.5 ℃, the relative power ratio of dual-frequency laser is 1.89:1.00. At this time, the maximum power product of dual-frequency laser can achieve the highest beat-frequency efficiency.