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SiO2 Cavity Dumper/Pulse Picker For Argon-Ion, Ti:Sapphire and Nd:YAG Lasers The Model H-101 Acousto-Optic Modulator is a high-speed Brewster windowed device designed to support pulse-picking and mode-locking applications requiring higher optical power handling capability than is available with single crystal devices offering similar modulation capability. Light from a coherent optical source is focused to a beam waist within the optical medium composed of low loss optical grade fused silica, and is proportionally directed into a primary intense diffraction order when an acoustic pulse is introduced by a suitable RF source. The RF input signal is converted to an equivalent traveling acoustic pulse via a single crystal piezoelectric transducer which is alloy bonded to the fused silica substrate under high vacuum. Applications - Electrically controlled optical switch used to select a single pulse out of a pulse train.
- Used intra-cavity in conjunction with mode locker to increase the energy of a single pulse or select ultra-short pulses.
- General purpose, high-speed modulation applications.
Highlights - Exceptional performance due to specialized fabrication techniques.
- Utilizes high-frequency, bulk wave transducers.
- High reliability due to high vacuum application of alloy bonded transducers.
- Brewster windowed device.
- Rise time of less than 8 nanoseconds and diffraction efficiency of greater than 10% at 500 mW drive power (single pass).
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