Position-resolved Raman spectra from a laser-trapped single airborne chemical droplet

Aimable Kalume; Eric Zhu; Chuji Wang; Joshua Santarpia; Yong Le Pan

doi:10.1364/OL.42.005113

Position-resolved Raman spectra from a laser-trapped single airborne chemical droplet

Aimable Kalume, Eric Zhu, Chuji Wang, Joshua Santarpia, Yong Le Pan

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

15 Scopus citations

Abstract

It could be very useful to detect and monitor the molecules and molecular reactions located at different positions within a microsized particle as they respond to various micro-local environments. In this Letter, a particular optical trap using two focusing counterpropagating hollow beams was able to stably trap both absorbing and nonabsorbing particles in air for lengthy observation. A technique that can measure the Raman spectra from different submicrometer positions of a laser-trapped single airborne particle was developed. Spontaneous and stimulated Raman scattering spectra originating from different positions of a diethyl phthalate droplet were recorded, and the strong Raman scattering signals are the result of cavity-enhanced effects and the localized strong light illumination.

Original language	English (US)
Pages (from-to)	5113-5116
Number of pages	4
Journal	Optics Letters
Volume	42
Issue number	24
DOIs	https://doi.org/10.1364/OL.42.005113
State	Published - Dec 15 2017
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OL.42.005113

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abstract = "It could be very useful to detect and monitor the molecules and molecular reactions located at different positions within a microsized particle as they respond to various micro-local environments. In this Letter, a particular optical trap using two focusing counterpropagating hollow beams was able to stably trap both absorbing and nonabsorbing particles in air for lengthy observation. A technique that can measure the Raman spectra from different submicrometer positions of a laser-trapped single airborne particle was developed. Spontaneous and stimulated Raman scattering spectra originating from different positions of a diethyl phthalate droplet were recorded, and the strong Raman scattering signals are the result of cavity-enhanced effects and the localized strong light illumination.",

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AU - Pan, Yong Le

PY - 2017/12/15

Y1 - 2017/12/15

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AB - It could be very useful to detect and monitor the molecules and molecular reactions located at different positions within a microsized particle as they respond to various micro-local environments. In this Letter, a particular optical trap using two focusing counterpropagating hollow beams was able to stably trap both absorbing and nonabsorbing particles in air for lengthy observation. A technique that can measure the Raman spectra from different submicrometer positions of a laser-trapped single airborne particle was developed. Spontaneous and stimulated Raman scattering spectra originating from different positions of a diethyl phthalate droplet were recorded, and the strong Raman scattering signals are the result of cavity-enhanced effects and the localized strong light illumination.

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Position-resolved Raman spectra from a laser-trapped single airborne chemical droplet

Abstract

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