Sub-nanosecond, 1-10 kHz, low-threshold, non-critical OPOs based on periodically poled KTP crystal pumped at 1,064 nm
Sub-nanosecond, 1-10 kHz, low-threshold, non-critical OPOs based on periodically poled KTP crystal pumped at 1,064 nm
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DOI：
10.1007/s00340-012-5177-4
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发表时间：
2012-11-01
影响因子：
2.1
通讯作者：
Laurell, Fredrik
中科院分区：
文献类型：
--
作者：
Marchev, Georgi;Dallocchio, Paolo;Laurell, Fredrik
我们采用了9毫米长的周期性极化KTiOPO 4（PPKTP）晶体的光参量振荡器（OPO）产生约2.8 μ m的亚纳秒闲频脉冲。采用1cm长的OPO腔，单谐振结构，1, 064 nm的1 ns脉冲双程抽运，在1 kHz时，最大闲频能量达到110 μ J。在1-10 kHz下用500 ps脉冲泵浦，导致类似于50 μ J的空闲能量和类似于250 ps的最短脉冲持续时间，这是OPO曾经报道过的。相应的量子转换效率分别为32.5%和34.9%。
We employed a 9-mm long periodically poled KTiOPO4 (PPKTP) crystal in an optical parametric oscillator (OPO) to generate sub-nanosecond idler pulses around 2.8 mu m. With a 1-cm long OPO cavity in a singly resonant configuration and double pass pumping by 1-ns pulses at 1,064 nm, the maximum idler energy reached 110 mu J at 1 kHz. Pumping with 500 ps pulses at 1-10 kHz, resulted in an idler energy of similar to 50 mu J and the shortest pulse duration of similar to 250 ps, ever reported for an OPO. The corresponding quantum conversion efficiencies were 32.5 and 34.9 %, respectively.