Amplification of weak Stokes signals in the transient regime of stimulated Brillouin scattering

Bel'dyugin, Igor' M; Efimkov, V F; Михайлов, С И; Zubarev, I G

doi:10.1007/s10946-005-0001-9

Cited by 17 publications

(12 citation statements)

References 7 publications

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“…[6][7][8][9][10][11][12] Basov 10 set up the phase-conjugate beam combination system with nine paths of amplification and August 13 applied beam combination to the master oscillator power-amplifier ͑MOPA͒ system. [15][16][17] For instance, Sternklar 15 achieved energy amplification of 300 times when signal is 2.5 J and 6.5 mJ of pump, and Bel'dyugin 16 reported 2 ϫ 10 9 fold amplification of 10 −11 J of Stokes beam. However, none of these works can overcome the limit of high load and complexity of structure.…”

Section: Highly Efficient Brillouin Amplification Of Strong Stokes Seedmentioning

confidence: 99%

Highly efficient Brillouin amplification of strong Stokes seed

Guo

Lü

Wang

2010

Applied Physics Letters

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Section: Highly Efficient Brillouin Amplification Of Strong Stokes Seedmentioning

confidence: 99%

Highly efficient Brillouin amplification of strong Stokes seed

Guo

Lü

Wang

2010

Applied Physics Letters

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“…(4) and (5), previously obtained in the temporal domain for stimulated scattering induced by non-monochromatic pump and monochromatic Stokes fields in Refs. [5,[48][49][50][51] and for monochromatic pump and non-monochromatic Stokes fields in Ref. [52] (see Eq.…”

Section: Effect Of Pump Spectral Width On Spectral Broadening Of Sbsmentioning

confidence: 99%

Physical mechanism of “slow light” in stimulated Brillouin scattering

Kovalev

Harrison²,

Kotova

2010

Front. Optoelectron. China

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We show from analytical analysis of the basic stimulated Brillouin scattering (SBS) equations in the time domain that the SBS amplification process does not amplify an external Stokes pulse and therefore cannot induce group delay of the Stokes pulse as claimed in the literature. Rather, the delayed output Stokes pulse is the pump radiation reflected by the induced acoustic wave, the amplitude of which determines the rate of the amplification process and time delay of the pulse. The latter is predominantly a consequence of the SBS buildup process determined by the inertia of the acoustic wave excitation. Analytical solutions of the SBS equations in the frequency domain show that spectral broadening of the pump radiation leads to only negligible broadening of the SBS spectral bandwidth and so does not provide an effective means to achieve broadband pulse delay.

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“…Its typical optical magnification can reach to ~10 6 times (the highest reported up to ~10 9 times [6][7][8]), the amplified pulse signal energy can be as small as 10 -11 J [9]. Therefore, Brillouin optical amplification is suitable for strong background field of weak optical signal detection, the amplified optical SNR [10] is also greatly improved.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the noise suppression of Brillouin amplification for weak Stokes signals

Liu

Hasi

et al. 2012

2012 International Conference on Optoelectronics and Microelectronics

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For weak Stokes Brillouin amplification, the speckle noise of the amplified spontaneous Brillouin scattering (ABS) of pump laser limits the signal to noise ratio (SNR). This paper introduces the design of a double signal Brillouin amplification scheme, it can improve the SNR for weak signal Brillouin amplification. The experimental results show that the noncollinear strong Stokes Brillouin amplification can reduce ABS noise by more than two orders of magnitude, the collinear weak Stokes signal optical magnification decreases only one order of magnitude, nJ collinear weak signal can still get 10 5 magnification. Double signal Brillouin amplification scheme can substantially in the amplified signal, at the same time, can effectively improve the optical SNR, and improve the reliability of signal measurement.Keywords-Brillouin amplification; signal to noise ratio; amplified spontaneous Brillouin scattering; optical weak signal detection.

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Amplification of weak Stokes signals in the transient regime of stimulated Brillouin scattering

Cited by 17 publications

References 7 publications

Highly efficient Brillouin amplification of strong Stokes seed

Highly efficient Brillouin amplification of strong Stokes seed

Physical mechanism of “slow light” in stimulated Brillouin scattering

Investigation on the noise suppression of Brillouin amplification for weak Stokes signals

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