We present a novel four-mirror cavity with two active gains to combine power intracavity and also give a detailed theoretical analysis of the combined gain. By using the effective field method, the four-mirror cavity ...We present a novel four-mirror cavity with two active gains to combine power intracavity and also give a detailed theoretical analysis of the combined gain. By using the effective field method, the four-mirror cavity with two gain media can be regarded as a linear resonator with one effective combined gain （ECG）, and we procure a theoretical model of the ECG and deduce its exact analytical expression. When the two branch gains are close to each other; the combined gain can be reduced to their product; and the simplified presentation of ECG has been demonstrated. The combined output power which directly reflects the small signal ECG of the four-mirror cavity is studied experimentally; and the results are in good agreement with the theoretical ones.展开更多
By analyzing the relation between the transmission of the output mirror and the output power in an intracavity frequency doubling laser,we choose an optimal transmission of the output mirror according to the laser app...By analyzing the relation between the transmission of the output mirror and the output power in an intracavity frequency doubling laser,we choose an optimal transmission of the output mirror according to the laser application requirements.As a result,a high-power single-frequency laser at 540nm is obtained with a maximum output power of 8 W and a power stability of ±1% for three hours,whose beam quality M2 is better than 1.2.At the same time,a moderate FW power of 1.2 W is coupled out,which is enough to meet the requirements for local oscillation light and injected signal optical beams in quantum optics experiments.展开更多
文摘We present a novel four-mirror cavity with two active gains to combine power intracavity and also give a detailed theoretical analysis of the combined gain. By using the effective field method, the four-mirror cavity with two gain media can be regarded as a linear resonator with one effective combined gain （ECG）, and we procure a theoretical model of the ECG and deduce its exact analytical expression. When the two branch gains are close to each other; the combined gain can be reduced to their product; and the simplified presentation of ECG has been demonstrated. The combined output power which directly reflects the small signal ECG of the four-mirror cavity is studied experimentally; and the results are in good agreement with the theoretical ones.
基金Supported by the National High-tech R&D Program of China(2011AA030203)the National Basic Research Program of China(2010CB923101)+1 种基金the National Nature Science Foundation of China(61008001)the Nature Science Foundation of Shanxi Province(2011021003-2).
文摘By analyzing the relation between the transmission of the output mirror and the output power in an intracavity frequency doubling laser,we choose an optimal transmission of the output mirror according to the laser application requirements.As a result,a high-power single-frequency laser at 540nm is obtained with a maximum output power of 8 W and a power stability of ±1% for three hours,whose beam quality M2 is better than 1.2.At the same time,a moderate FW power of 1.2 W is coupled out,which is enough to meet the requirements for local oscillation light and injected signal optical beams in quantum optics experiments.
