Solar blind chemically vapor deposited diamond detectors for vacuum ultraviolet pulsed light-source characterization

Details Solar blind chemically vapor deposited diamond detectors for vacuum ultraviolet pulsed light-source characterization Solar blind chemically vapor deposited diamond detectors for vacuum ultraviolet pulsed light-source characterization

Nov 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998jap....84.5331f&link_type=abstract

Journal of Applied Physics, Volume 84, Issue 9, pp. 5331-5336 (1998).

Physics

17

Photodetectors, Phase Conjugation, Photorefractive And Kerr Effects, Frequency Conversion, Harmonic Generation, Including Higher-Order Harmonic Generation, Optical Frequency Converters, X- And Gamma-Ray Sources, Mirrors, Gratings, And Detectors, Ultrafast Processes, Optical Pulse Generation And Pulse Compression, High-Speed Techniques

Scientific paper

A major difficulty in characterizing vacuum ultraviolet (VUV) radiation produced by harmonic generation or four-wave sum frequency mixing arises in differentiating between the desired VUV signal and the remaining fundamental pump laser beam. To overcome this problem, visible and near UV blind VUV detectors, made from natural and synthetic diamond, have been developed. Such detectors have been used to characterize coherent VUV pulses (λ=125 nm, pulse duration at full width half maximum (FWHM) τFWHM~7 ns) generated by resonance-enhanced four-wave sum mixing in mercury vapor. They allow full characterization of the intensity profile of the VUV pulses, without any significant parasitic signal from simultaneous stray light irradiation at λ=313 nm. Detectors were fabricated exhibiting response times of less than 70 ps at FWHM, corresponding to the lowest response time obtainable with a 7 GHz bandwidth single-shot oscilloscope.

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