📜 Theorem, law or theory

Raman-Nath theory of acousto-optic diffraction

Teoría de Raman-Nath de la difracción acusto-óptica

Date
1935-1936 · confidence high
Place
Indian Institute of Science, Bangalore (Bengaluru), Karnataka, India
Credited to
C. V. Raman and N. S. Nagendra Nath
People
👤 Chandrasekhara Raman1888–1970
Field
Communication

What was discovered

They explained the diffraction of light by ultrasonic waves in a liquid as passage through a moving phase grating, predicting the intensities and frequency shifts of the orders. It is the theoretical basis of acousto-optic modulators.

What it led to

  • acousto-optic modulators and deflectors for lasers
  • optical signal processing
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📄 Original publication

The diffraction of light by high frequency sound waves: Part I.C. V. Raman, N. S. Nagendra Nathe · Proceedings of the Indian Academy of Sciences - Section A · 1935

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