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二次和三次谐波产生器
二次谐波和三次谐波产生器(SH和TH)用于将各种超快激光源产生的广泛输入波长的光频率加倍。来源可能是钛-蓝宝石飞秒激光器(Ti:S, 700- 1000nm),波长范围在1030-1064 nm的各种超快固态和光纤激光器,铬-forsterite振荡器(Cr:F, 1230-1270 nm),以及其他超短脉冲源,包括参数光转换系统。该操作的原理是基于二次谐波产生的非线性相位匹配技术。该单元提供稳定的输出辐射,具有良好的光束质量和很小的脉冲展宽。
ATsG-O(for oscillators) | ATsG-A(for amplifiers) | |||
Possible input wavelength range* | 750-1600 nm | |||
Input wavelength tuning range** | 50-100 nm | |||
Output wavelengths*** | 375-800 nm (SH) 250-533 nm (TH) | |||
Input pulse duration | >20 fs | |||
Input polarization | linear, horizontal | |||
Input average power | 0.3-3 W | <10 W | ||
Input pulse energy | <2 uJ | 2 uJ - 10 mJ | ||
Input beam dia at level of 1/е^2 | <2 mm | <10 mm | ||
Conversion efficiency**** | 20-50% (SH) | 3-8% (TH) | 30-50% (SH) | 8-15% (TH) |
Pulse broadening | <100 fs (SH) | <200 fs (TH) | <100 fs (SH) | <180 fs (TH) |
Output polarization | SH - linear, vertical; ТГ - linear, horizontal | |||
Dimensions | 480x222x192 mm | |||
* - may be covered by several exchangeable optics sets, please indicate the desired wavelength range upon your request; ** - typical with one optics set, depends on exact central wavelength and pulse duration; *** - defined by input wavelength; **** - defined by input pulse energy and input pulse duration. |
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