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从国外引进的Ti:sapphire/KrF混合型高功率超短脉冲激光器可输出744nm/150fs/15mJ和248nm/400fs/50mJ的高强度超短脉冲激光束,峰值功率超过0.1TW,光束发散角为4.4倍衍射极限。为进一步提高该装置的聚焦强度,在设计聚焦系统时主要考虑下列因素1 焦斑焦斑的大小直接影响聚焦强度
The Ti: sapphire / KrF hybrid high-power ultra-short pulse laser introduced from abroad can output high intensity ultrashort pulse laser beams of 744nm / 150fs / 15mJ and 248nm / 400fs / 50mJ with a peak power of more than 0.1TW and a beam divergence of 4.4 Double diffraction limit. In order to further improve the focusing intensity of the device, the following factors are mainly considered when designing the focusing system: 1 The focal spot size of the focal spot directly affects the focusing intensity