Nanosecond electro-optical switching with a repetition rate above 20MHz
Holger Mueller, Sheng-wey Chiow, Sven Herrmann, and Steven Chu
TL;DR
This paper presents a high-speed electro-optical switch capable of generating arbitrary pulse patterns at over 20MHz, utilizing a modified electro-optic modulator and a fast 340V pulser for rapid switching.
Contribution
It introduces a novel high-speed electro-optical switching system with a custom pulser and discusses variations for analog operation and different performance trade-offs.
Findings
Achieves a rise time of 2.2ns at 250V
Supports arbitrary pulse patterns at >20MHz
Offers design variations for different applications
Abstract
We describe an electro-optical switch based on a commercial electro-optic modulator (modified for high-speed operation) and a 340V pulser having a rise time of 2.2ns (at 250V). It can produce arbitrary pulse patterns with an average repetition rate beyond 20MHz. It uses a grounded-grid triode driven by transmitting power transistors. We discuss variations that enable analog operation, use the step-recovery effect in bipolar transistors, or offer other combinations of output voltage, size, and cost.
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