Abstract
We present an implementation of spectral phase interferometry for direct electric-field reconstruction (SPIDER) which characterizes ultrashort optical pulses in the spectral or temporal domain at a rate of 20 Hz. This apparatus was used in real-time as a diagnostic tool to optimize our 1 kHz regeneratively amplified laser system for the shortest duration pulses.
Highlights
Control of the amplitude and phase of ultrashort optical pulses is an important technology for many emerging areas of physics
We present an implementation of spectral phase interferometry for direct electric-field reconstruction (SPIDER) which characterizes ultrashort optical pulses in the spectral or temporal domain at a rate of 20 Hz
This paper presents a new implementation of the SPIDER technique, called real-time SPIDER, which is capable of characterizing ultrashort pulses with an update rate of 20 Hz
Summary
Control of the amplitude and phase of ultrashort optical pulses is an important technology for many emerging areas of physics. Shaped ultrashort optical pulses are often used in both preparation [1] and measurement [2,3] in quantum control experiments In this application, a knowledge of the electric field of the radiation is critical. A knowledge of the electric field of the radiation is critical Because these and other experiments require control of optical pulse properties beyond the temporal duration and spectral bandwidth, and because this tailoring needs to be both accurate and stable from pulse to pulse, it is imperative that both the amplitude and phase profiles of the pulse be measured as far as possible in real-time. This paper presents a new implementation of the SPIDER technique, called real-time SPIDER, which is capable of characterizing ultrashort pulses with an update rate of 20 Hz. A significant feature of this instrument is that it was built with common, inexpensive equipment which already exists in most laboratories.
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