Diffractive beam splitter for laser Doppler velocimetry
نویسندگان
چکیده
منابع مشابه
Diffractive beam splitter for laser Doppler velocimetry.
A miniaturized sensor head for the optical measurement of velocities of fluids based on laser Doppler velocimetry is demonstrated. Holographic optical elements mounted on a glass substrate are used for beam splitting and deflection. Volume holograms in dichromated gelatin exhibit good optical efficiency (75% transmission of a cascade of two holographic optical elements). With diffractive device...
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A simple optical interference method to fabricate microperiodic structures was demonstrated. Femtosecond laser pulse was split by a diffractive beam splitter and overlapped with two lenses. Temporal overlap of the split femtosecond pulses, which requires 10 mm order accuracy in optical path lengths, was automatically achieved by this optical setup. One-, two-, and three-dimensional periodic mic...
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ژورنال
عنوان ژورنال: Optics Letters
سال: 1992
ISSN: 0146-9592,1539-4794
DOI: 10.1364/ol.17.001240