Enhanced CARS for remote detection
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Authors
Liu, Gengyuan
Narducci, Frank
Malinovskaya, Svetlana
Subjects
Advisors
Date of Issue
2018-01
Date
2018-01
Publisher
Colloquium on the Physics of Quantum Electronics
Language
en_US
Abstract
The demand for remote molecular detection has been rising in recent years. The technique of coherent anti-Stokes Raman spectroscopy (CARS) has become one of the most optimal methods due to its high efficiency, fast response time and ease of use. In this work, we analyze the feasibility of an optical frequency comb for coherence control between vibrational states in application to remote detection, propose a new method for adiabatic passage in the four wave mixing and estimate the number of photons detectable from a CARS signal depending on the key parameters of the laser system [1]. We used a semiclassical theory of nonlinear scattering introduced in [2]. We assume that the large backscattered signal is due to the backward phase matching of internally reflected laser fields within the volume containing molecules of the size two orders of magnitude smaller than the probing wavelength. The internal fields are reflected many times, which acts similarly to a resonant cavity with low reflectance.
Type
Abstract
Description
48th Winter Colloquium on the Physics of Quantum Electronics, Snowbird, Utah, January 7-12, 2018
Series/Report No
Department
Physics
Organization
Naval Postgraduate School
Identifiers
NPS Report Number
Sponsors
Office of Naval Research
Funding
Format
1 p.
Citation
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.