Single-shot high-resolution characterization of optical pulses by spectral phase diversity

Optics Express
C DorrerJ Bromage

Abstract

The concept of spectral phase diversity is proposed and applied to the temporal characterization of optical pulses. The experimental trace is composed of the measured power of a plurality of ancillary optical pulses derived from the pulse under test by adding known amounts of chromatic dispersion. The spectral phase of the pulse under test is retrieved by minimizing the error between the experimental trace and a trace calculated using the known optical spectrum and diagnostic parameters. An assembly composed of splitters and dispersive delay fibers has been used to generate 64 ancillary pulses whose instantaneous power can be detected in a single shot with a high-bandwidth photodiode and oscilloscope. The diagnostic is experimentally shown to accurately characterize pulses from a chirped-pulse-amplification system when its stretcher is detuned from the position for optimal recompression. Pulse-shape reconstruction for pulses shorter than the photodetection impulse response has been demonstrated. Various investigations of the performance with respect to the number of ancillary pulses and the range of chromatic dispersion generated in the diagnostic are presented.

References

May 17, 2008·Optics Letters·Reza SalemAlexander L Gaeta
Sep 2, 2008·Applied Optics·Seung-Whan BahkJonathan D Zuegel
Sep 6, 2008·Optics Express·Christophe DorrerJ D Zuegel
Mar 15, 1996·Optics Letters·G CheriauxL F Dimauro
Nov 7, 2012·The Review of Scientific Instruments·S P VernonR E Stewart
Feb 4, 2014·Optics Letters·C Cuadrado-LabordeM V Andres

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