High Transmission LiF Prism Monochromator for Separation of VUV Wavelengths in Frequency Mixing Experiments |
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| Authors: | J.P. Marangos R.C.M. Learner D.J. Heading |
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| Affiliation: | Laser Optics and Spectroscopy Group, Blackett Laboratory , Imperial College , London, SW7 2BZ, England |
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| Abstract: | Abstract We describe a simple, high throughput, LiF prism monochromator for the vacuum ultraviolet (VUV). The instrument throughput is 30% at 145 nm and the output can be tuned within the range 120–185 nm. The very high dispersion of LiF in the VUV means that neither narrow slits nor high precision are required. The suitability of this instrument for separation of coherent VUV radiation, generated by four-wave mixing, from the intense fundamental laser radiation (at 212 nm and the visible) is demonstrated. General advantages in throughput, polarization and resistance to radiation damage of such a prism instrument compared to a diffraction grating monochromator are discussed. |
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