Novel Delayed Pulse Techniques for Stimulated Raman Scattering

Larry R. Marshall; James A. Piper

doi:10.1109/3.199306

Novel Delayed Pulse Techniques for Stimulated Raman Scattering

Larry R. Marshall, James A. Piper

Research output: Contribution to journal › Article

3 Citations (Scopus)

Abstract

The outputs of two independent, incoherent lasers are spatially overlapped in a Raman-active medium. When the pulses are separated in time, the stimulated Raman scattering (SRS) efficiency of the delayed pulse is increased from 14 to 27%. We show that this occurs because of the presence of the decaying coherent excitation induced by SRS of the first pulse. The influence of saturable losses is removed by prepulsing the medium prior to applying the pulse pair. The temporal evolution of the enhancement and phase-matching conditions are investigated. Surprisingly, the pulses interact only when they are separated in time, with the enhancement vanishing when they are temporally overlapped. These results show that the outputs of several independent lasers may be combined to generate significantly higher SRS efficiencies, without increasing the pump intensity incident on the medium. This novel technique provides a means for recovering efficient SRS in the transient (short-pulse) regime.

Original language	English
Pages (from-to)	515-524
Number of pages	10
Journal	IEEE Journal of Quantum Electronics
Volume	29
Issue number	2
DOIs	https://doi.org/10.1109/3.199306
Publication status	Published - 1993

Access to Document

10.1109/3.199306

Link to publication in Scopus

Fingerprint Dive into the research topics of 'Novel Delayed Pulse Techniques for Stimulated Raman Scattering'. Together they form a unique fingerprint.

Cite this

Marshall, L. R., & Piper, J. A. (1993). Novel Delayed Pulse Techniques for Stimulated Raman Scattering. IEEE Journal of Quantum Electronics, 29(2), 515-524. https://doi.org/10.1109/3.199306

@article{dda34fc0c44f4c928f1b18f77daf5608,

title = "Novel Delayed Pulse Techniques for Stimulated Raman Scattering",

abstract = "The outputs of two independent, incoherent lasers are spatially overlapped in a Raman-active medium. When the pulses are separated in time, the stimulated Raman scattering (SRS) efficiency of the delayed pulse is increased from 14 to 27{\%}. We show that this occurs because of the presence of the decaying coherent excitation induced by SRS of the first pulse. The influence of saturable losses is removed by prepulsing the medium prior to applying the pulse pair. The temporal evolution of the enhancement and phase-matching conditions are investigated. Surprisingly, the pulses interact only when they are separated in time, with the enhancement vanishing when they are temporally overlapped. These results show that the outputs of several independent lasers may be combined to generate significantly higher SRS efficiencies, without increasing the pump intensity incident on the medium. This novel technique provides a means for recovering efficient SRS in the transient (short-pulse) regime.",

author = "Marshall, {Larry R.} and Piper, {James A.}",

year = "1993",

doi = "10.1109/3.199306",

language = "English",

volume = "29",

pages = "515--524",

journal = "IEEE Journal of Quantum Electronics",

issn = "0018-9197",

publisher = "Institute of Electrical and Electronics Engineers (IEEE)",

number = "2",

}

TY - JOUR

T1 - Novel Delayed Pulse Techniques for Stimulated Raman Scattering

AU - Marshall, Larry R.

AU - Piper, James A.

PY - 1993

Y1 - 1993

N2 - The outputs of two independent, incoherent lasers are spatially overlapped in a Raman-active medium. When the pulses are separated in time, the stimulated Raman scattering (SRS) efficiency of the delayed pulse is increased from 14 to 27%. We show that this occurs because of the presence of the decaying coherent excitation induced by SRS of the first pulse. The influence of saturable losses is removed by prepulsing the medium prior to applying the pulse pair. The temporal evolution of the enhancement and phase-matching conditions are investigated. Surprisingly, the pulses interact only when they are separated in time, with the enhancement vanishing when they are temporally overlapped. These results show that the outputs of several independent lasers may be combined to generate significantly higher SRS efficiencies, without increasing the pump intensity incident on the medium. This novel technique provides a means for recovering efficient SRS in the transient (short-pulse) regime.

AB - The outputs of two independent, incoherent lasers are spatially overlapped in a Raman-active medium. When the pulses are separated in time, the stimulated Raman scattering (SRS) efficiency of the delayed pulse is increased from 14 to 27%. We show that this occurs because of the presence of the decaying coherent excitation induced by SRS of the first pulse. The influence of saturable losses is removed by prepulsing the medium prior to applying the pulse pair. The temporal evolution of the enhancement and phase-matching conditions are investigated. Surprisingly, the pulses interact only when they are separated in time, with the enhancement vanishing when they are temporally overlapped. These results show that the outputs of several independent lasers may be combined to generate significantly higher SRS efficiencies, without increasing the pump intensity incident on the medium. This novel technique provides a means for recovering efficient SRS in the transient (short-pulse) regime.

UR - http://www.scopus.com/inward/record.url?scp=0027541919&partnerID=8YFLogxK

U2 - 10.1109/3.199306

DO - 10.1109/3.199306

M3 - Article

VL - 29

SP - 515

EP - 524

JO - IEEE Journal of Quantum Electronics

JF - IEEE Journal of Quantum Electronics

SN - 0018-9197

IS - 2

ER -