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Updated: Jan 20, 2026
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
A time-to-frequency converter for measuring the shape of short optical pulses
Brent W Plansinis1, William R Donaldson2, Govind P Agrawal1
1The Institute of Optics, University of Rochester, Rochester, New York 14627, USA.
Abstract:
A time-to-frequency converter was constructed using an electro-optic phase modulator as a time lens, allowing the pulse shape in time to be transferred to the frequency domain. We used such a device to record the temporal shape of infrared pulses at a wavelength of 1053 nm (width about 7 ps) and compared these measurements to those made by using both a streak camera and an autocorrelator. This side-by-side comparison illustrates the benefits and limitations of each of the measurement methods. Numerical simulations were used to establish that our time-lens-based system can accurately measure the shape of infrared pulses between 3 ps and 12 ps. We also use our numerical model to determine how such a system can be modified to measure pulses whose width lies in the range of 1-30 ps, a range of interest for the OMEGA-EP laser at the Laboratory for Laser Energetics.
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