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首页> 外文会议>Nonlinear Materials, Devices, and Applications >Broadly tunable noncollinear optical parametric oscillator with periodically poled KTiOPO4
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Broadly tunable noncollinear optical parametric oscillator with periodically poled KTiOPO4

机译：具有周期性极化KTiOPO4的广泛可调的非共线光学参量振荡器

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Abstract: Here we report on a noncollinear optical parametric oscillator (OPO) in periodically poled KTiOPO$-4$/. The noncollinear OPO cavity consisted of a 10 mm-long periodically poled KTiOPO$-4$/ crystal placed between two flat mirrors and pumped at 532nm by a frequency doubled Q- switched Nd:YAG. The OPO threshold for the collinear configuration was reached at the pump pulse energy of 10 $mu@J and increased monotonically when increasing the noncollinear interaction angle. The efficiency of the OPO with PPKTP reached 50 percent in the collinear configuration and about 40 percent in the noncollinear configuration. The noncollinear OPO generated two signal-idler pairs. Only one of the waves in each pair was resonated in the OPO cavity, while the complementary waves were generated at different angels as required by momentum conservation. The OPO could be tuned over a range of about 290 nm around 1064 nm wavelength by adjusting the cavity angle and the PPKTP temperature. Narrowing of the OPO spectrum was observed for small noncollinear interaction angles. !10
机译：摘要：这里我们报告了一个周期性极化的KTiOPO $ -4 $ /中的非共线光学参量振荡器（OPO）。非共线OPO腔由10毫米长的周期性极化KTiOPO $ -4 /晶体组成，该晶体放置在两个平面镜之间，并通过倍频Q开关Nd：YAG泵浦到532nm。共线配置的OPO阈值在泵浦脉冲能量为10 $ mu @ J时达到，并在增加非共线相互作用角时单调增加。在共线配置中，带有PPKTP的OPO的效率达到50％，在非共线配置中达到40％。非共线OPO生成了两个信号空闲对。每对中只有一个波在OPO腔中共振，而互补波是根据动量守恒的要求在不同的角度产生的。通过调节腔角和PPKTP温度，可以在1064 nm波长附近的290 nm范围内调谐OPO。对于小的非共线相互作用角，观察到OPO谱变窄。 ！10

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