Fluctuations of optical phase of diffracted light for Raman–Nath diffraction in acousto–optic effect<xref ref-type="fn" rid="cpb141126fn1">*</xref>

Fluctuations of optical phase of diffracted light for Raman–Nath diffraction in acousto–optic effect*

Weng Cun-Cheng^a),^b), Zhang Xiao-Man^b),^c)†

Fig.#cod#x00A0;4. Two signal waveforms for two different detection positions from an oscilloscope. Curve a : electrical signals exciting the ultrasonic transducer. Curve b : ultrasound-modulated optical signals from PMT. a Position 1; b position 2.