Development of ultra-narrow band VUV coherent SR Source

我们一直在开发利用相干谐波产生（CHG）技术在真空紫外波长范围（200 - 30nm）内产生相干光的技术。我们建立了电子束与激光在波动器中的时空对准技术。我们提出了一种用光谱映射的方法来识别两个波动器的光轴。实验证实了CHG具有符合傅里叶极限的窄带频谱。我们研究了利用受激布里渊散射产生1纳秒高能激光脉冲的可能性。我们已经成功开发了几种利用CHG方案产生变波长超窄带VUV辐射的元件技术。

We have been developing technologies to produce coherent light in the vacuum ultraviolet wavelength range, from 200 - 30 nm, by means of coherent harmonic generation (CHG). We have established techniques for the spatial and temporal alignment between electron beam and laser in the undulators. We have developed a method to identify the optical axis of two undulators by means of spectral mapping. We experimentally confirmed that the CHG has a narrowband spectrum which is consistent with the Fourier limit. We have investigated the possibility to use stimulated Brillouin scattering for generating high-energy laser pulse of 1 nanosecond. We have successfully developed several element technologies for generating wavelength variable ultra-narrowband VUV radiation by using the CHG scheme.