Filter-based ultralow-frequency Raman measurement down to 2 cm-1 for fast Brillouin spectroscopy measurement

Xue Lu Liu; He Nan Liu; Jiang Bin Wu; Han Xu Wu; Tao Zhang; Wei Qian Zhao; Ping Heng Tan

doi:10.1063/1.4983144

Filter-based ultralow-frequency Raman measurement down to 2 cm^-1 for fast Brillouin spectroscopy measurement

Xue Lu Liu, He Nan Liu, Jiang Bin Wu, Han Xu Wu, Tao Zhang, Wei Qian Zhao, Ping Heng Tan

School of Optics and Photonics

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

13 Citations (Scopus)

Abstract

Simultaneous Stokes and anti-Stokes ultralow-frequency (ULF) Raman measurement down to ∼2 cm-1 or 60 GHz is realized by a single-stage spectrometer in combination with volume-Bragg-grating-based notch filters. This system reveals its excellent performance by probing Brillouin signal of acoustic phonons in silicon, germanium, gallium arsenide, and gallium nitride. The deduced sound velocity and elastic constants are in good accordance with previous results determined by various methods. This system can shorten the integration time of the Brillouin signal with a good signal-to-noise ratio by more than 2000-fold compared to a Fabry-Perot interferometer (FPI). This study shows how a filter-based ULF Raman system can be used to reliably achieve Brillouin spectroscopy for condensed materials with high sensitivity and high signal-to-noise ratio, stimulating fast Brillouin spectrum measurements to probe acoustic phonons in semiconductors.

Original language	English
Pages (from-to)	53110
Number of pages	1
Journal	Review of Scientific Instruments
Volume	88
Issue number	5
DOIs	https://doi.org/10.1063/1.4983144
Publication status	Published - 1 May 2017

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10.1063/1.4983144

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title = "Filter-based ultralow-frequency Raman measurement down to 2 cm-1 for fast Brillouin spectroscopy measurement",

abstract = "Simultaneous Stokes and anti-Stokes ultralow-frequency (ULF) Raman measurement down to ∼2 cm-1 or 60 GHz is realized by a single-stage spectrometer in combination with volume-Bragg-grating-based notch filters. This system reveals its excellent performance by probing Brillouin signal of acoustic phonons in silicon, germanium, gallium arsenide, and gallium nitride. The deduced sound velocity and elastic constants are in good accordance with previous results determined by various methods. This system can shorten the integration time of the Brillouin signal with a good signal-to-noise ratio by more than 2000-fold compared to a Fabry-Perot interferometer (FPI). This study shows how a filter-based ULF Raman system can be used to reliably achieve Brillouin spectroscopy for condensed materials with high sensitivity and high signal-to-noise ratio, stimulating fast Brillouin spectrum measurements to probe acoustic phonons in semiconductors.",

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AU - Liu, Xue Lu

AU - Liu, He Nan

AU - Wu, Jiang Bin

AU - Wu, Han Xu

AU - Zhang, Tao

AU - Zhao, Wei Qian

AU - Tan, Ping Heng

PY - 2017/5/1

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N2 - Simultaneous Stokes and anti-Stokes ultralow-frequency (ULF) Raman measurement down to ∼2 cm-1 or 60 GHz is realized by a single-stage spectrometer in combination with volume-Bragg-grating-based notch filters. This system reveals its excellent performance by probing Brillouin signal of acoustic phonons in silicon, germanium, gallium arsenide, and gallium nitride. The deduced sound velocity and elastic constants are in good accordance with previous results determined by various methods. This system can shorten the integration time of the Brillouin signal with a good signal-to-noise ratio by more than 2000-fold compared to a Fabry-Perot interferometer (FPI). This study shows how a filter-based ULF Raman system can be used to reliably achieve Brillouin spectroscopy for condensed materials with high sensitivity and high signal-to-noise ratio, stimulating fast Brillouin spectrum measurements to probe acoustic phonons in semiconductors.

AB - Simultaneous Stokes and anti-Stokes ultralow-frequency (ULF) Raman measurement down to ∼2 cm-1 or 60 GHz is realized by a single-stage spectrometer in combination with volume-Bragg-grating-based notch filters. This system reveals its excellent performance by probing Brillouin signal of acoustic phonons in silicon, germanium, gallium arsenide, and gallium nitride. The deduced sound velocity and elastic constants are in good accordance with previous results determined by various methods. This system can shorten the integration time of the Brillouin signal with a good signal-to-noise ratio by more than 2000-fold compared to a Fabry-Perot interferometer (FPI). This study shows how a filter-based ULF Raman system can be used to reliably achieve Brillouin spectroscopy for condensed materials with high sensitivity and high signal-to-noise ratio, stimulating fast Brillouin spectrum measurements to probe acoustic phonons in semiconductors.

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Filter-based ultralow-frequency Raman measurement down to 2 cm^-1 for fast Brillouin spectroscopy measurement

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