High power pulsed fiber MOPA system incorporating electro-optic modulator based adaptive pulse shaping

Andrew Malinowski; Khu Tri Vu; Kang Kang Chen; Johan Nilsson; Yoonchan Jeong; Shaiful Alam; Dejiao Lin; David J. Richardson

doi:10.1364/OE.17.020927

High power pulsed fiber MOPA system incorporating electro-optic modulator based adaptive pulse shaping

Andrew Malinowski^*, Khu Tri Vu, Kang Kang Chen, Johan Nilsson, Yoonchan Jeong, Shaiful Alam, Dejiao Lin, David J. Richardson

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

134 Citations (Scopus)

Abstract

We demonstrate active pulse shaping using an Electro-Optic Modulator in order to compensate the pulse shaping effects caused by Gain Saturation in a high power Yb doped fiber amplifier chain and to generate various custom-defined output pulse shapes. Square, step and smooth pulse shapes are achieved, with mJ pulse energies. Use of a modulator to shape pulses rather than direct modulation of the diode drive current allows us to eliminate undesired transients due to laser start up dynamics. The required shaping is calculated based on a simple measurement of amplifier performance, and does not require detailed modeling of the amplifier dynamics.

Original language	English
Pages (from-to)	20927-20937
Number of pages	11
Journal	Optics Express
Volume	17
Issue number	23
DOIs	https://doi.org/10.1364/OE.17.020927
Publication status	Published - 2009
Externally published	Yes

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abstract = "We demonstrate active pulse shaping using an Electro-Optic Modulator in order to compensate the pulse shaping effects caused by Gain Saturation in a high power Yb doped fiber amplifier chain and to generate various custom-defined output pulse shapes. Square, step and smooth pulse shapes are achieved, with mJ pulse energies. Use of a modulator to shape pulses rather than direct modulation of the diode drive current allows us to eliminate undesired transients due to laser start up dynamics. The required shaping is calculated based on a simple measurement of amplifier performance, and does not require detailed modeling of the amplifier dynamics.",

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AU - Nilsson, Johan

AU - Jeong, Yoonchan

AU - Alam, Shaiful

AU - Lin, Dejiao

AU - Richardson, David J.

PY - 2009

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AB - We demonstrate active pulse shaping using an Electro-Optic Modulator in order to compensate the pulse shaping effects caused by Gain Saturation in a high power Yb doped fiber amplifier chain and to generate various custom-defined output pulse shapes. Square, step and smooth pulse shapes are achieved, with mJ pulse energies. Use of a modulator to shape pulses rather than direct modulation of the diode drive current allows us to eliminate undesired transients due to laser start up dynamics. The required shaping is calculated based on a simple measurement of amplifier performance, and does not require detailed modeling of the amplifier dynamics.

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High power pulsed fiber MOPA system incorporating electro-optic modulator based adaptive pulse shaping

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