Pump-Probe Measurements of the Raman Gain Coefficient in Crystals Using Multi-Longitudinal-Mode Beams

Alexander Sabella; David J. Spence; Richard P. Mildren

doi:10.1109/JQE.2015.2503404

Pump-Probe Measurements of the Raman Gain Coefficient in Crystals Using Multi-Longitudinal-Mode Beams

Alexander Sabella, David J. Spence, Richard P. Mildren

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

17 Citations (Scopus)

Abstract

The effect of multi-longitudinal-mode interference on pump-probe Raman gain measurements is studied as the functions of laser linewidth and correlation between the pump and probe temporal structures. For Raman linewidths typical of crystals, correlations that develop between the pump and the probe increase the Raman amplification beyond the ideal single longitudinal mode case, leading to inflated Raman gain coefficient values. We show that the linewidth correction factors used previously are valid only for uncorrelated beams and small gain factors. Taking into account these considerations, a Raman gain coefficient for a diamond of 3.80 ± 0.35 cm/GW is reported at a pump wavelength of 1.864 μm (polarizations parallel to a 〈110〉 crystal axis).

Original language	English
Article number	7337371
Pages (from-to)	1–8
Number of pages	8
Journal	IEEE Journal of Quantum Electronics
Volume	51
Issue number	12
DOIs	https://doi.org/10.1109/JQE.2015.2503404
Publication status	Published - 1 Dec 2015

Keywords

Diamond
Raman gain
Raman scattering

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10.1109/JQE.2015.2503404

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title = "Pump-Probe Measurements of the Raman Gain Coefficient in Crystals Using Multi-Longitudinal-Mode Beams",

abstract = "The effect of multi-longitudinal-mode interference on pump-probe Raman gain measurements is studied as the functions of laser linewidth and correlation between the pump and probe temporal structures. For Raman linewidths typical of crystals, correlations that develop between the pump and the probe increase the Raman amplification beyond the ideal single longitudinal mode case, leading to inflated Raman gain coefficient values. We show that the linewidth correction factors used previously are valid only for uncorrelated beams and small gain factors. Taking into account these considerations, a Raman gain coefficient for a diamond of 3.80 ± 0.35 cm/GW is reported at a pump wavelength of 1.864 μm (polarizations parallel to a 〈110〉 crystal axis).",

keywords = "Diamond, Raman gain, Raman scattering",

author = "Alexander Sabella and Spence, \{David J.\} and Mildren, \{Richard P.\}",

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T1 - Pump-Probe Measurements of the Raman Gain Coefficient in Crystals Using Multi-Longitudinal-Mode Beams

AU - Sabella, Alexander

AU - Spence, David J.

AU - Mildren, Richard P.

PY - 2015/12/1

Y1 - 2015/12/1

N2 - The effect of multi-longitudinal-mode interference on pump-probe Raman gain measurements is studied as the functions of laser linewidth and correlation between the pump and probe temporal structures. For Raman linewidths typical of crystals, correlations that develop between the pump and the probe increase the Raman amplification beyond the ideal single longitudinal mode case, leading to inflated Raman gain coefficient values. We show that the linewidth correction factors used previously are valid only for uncorrelated beams and small gain factors. Taking into account these considerations, a Raman gain coefficient for a diamond of 3.80 ± 0.35 cm/GW is reported at a pump wavelength of 1.864 μm (polarizations parallel to a 〈110〉 crystal axis).

AB - The effect of multi-longitudinal-mode interference on pump-probe Raman gain measurements is studied as the functions of laser linewidth and correlation between the pump and probe temporal structures. For Raman linewidths typical of crystals, correlations that develop between the pump and the probe increase the Raman amplification beyond the ideal single longitudinal mode case, leading to inflated Raman gain coefficient values. We show that the linewidth correction factors used previously are valid only for uncorrelated beams and small gain factors. Taking into account these considerations, a Raman gain coefficient for a diamond of 3.80 ± 0.35 cm/GW is reported at a pump wavelength of 1.864 μm (polarizations parallel to a 〈110〉 crystal axis).

KW - Diamond

KW - Raman gain

KW - Raman scattering

UR - https://www.scopus.com/pages/publications/84962441149

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DO - 10.1109/JQE.2015.2503404

M3 - Article

AN - SCOPUS:84962441149

SN - 0018-9197

VL - 51

SP - 1

EP - 8

JO - IEEE Journal of Quantum Electronics

JF - IEEE Journal of Quantum Electronics

IS - 12

M1 - 7337371

ER -

Pump-Probe Measurements of the Raman Gain Coefficient in Crystals Using Multi-Longitudinal-Mode Beams

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Keywords

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