Experimental demonstration of fiber differential spectral technique for monitoring small fluctuations in ultrashort laser pulses

Fozia Aziz; Rama Chari; Shrikant M. Oak

doi:10.1117/1.2759231

1 July 2007 Experimental demonstration of fiber differential spectral technique for monitoring small fluctuations in ultrashort laser pulses

Fozia Aziz, Rama Chari, Shrikant M. Oak

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Optical Engineering, Vol. 46, Issue 7, 073601 (July 2007). https://doi.org/10.1117/1.2759231

Abstract

Propagation along an optical fiber modifies the spectrum of an ultrashort laser pulse due to interaction of the pulse with the fiber nonlinearity. These spectral modifications can be correlated with the input pulse parameters like the pulse power, pulse width, chirp, and pulse shape. We have shown earlier by numerical calculation that a small change in any of the pulse parameters is magnified in the fiber-modified spectrum due to the nonlinear nature of the interaction. We had proposed a differential spectrum monitoring technique for detecting such small changes. We now show experimentally that this technique can provide a sensitive and practical method for monitoring small changes in ultrashort pulses. Thus it can serve as a practical on-line monitor for laser stability during experiments with ultrashort pulses.

©(2007) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Fozia Aziz, Rama Chari, and Shrikant M. Oak "Experimental demonstration of fiber differential spectral technique for monitoring small fluctuations in ultrashort laser pulses," Optical Engineering 46(7), 073601 (1 July 2007). https://doi.org/10.1117/1.2759231

Published: 1 July 2007

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KEYWORDS

Ultrafast phenomena

Modulation

Pulsed laser operation

Optical engineering

Fiber coupled lasers

Fiber lasers

Optical fibers

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