Chiral cavity ring down polarimetry: Chirality and magnetometry measurements using signal reversals

Bougas, Lykourgos; Sofikitis, Dimitris; Katsoprinakis, G. E.; Spiliotis, Alexandros K.; Tzallas, P.; Loppinet, Benoît; Rakitzis, T. Peter

doi:10.1063/1.4930109

Cited by 39 publications

(63 citation statements)

References 40 publications

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“…Recent demonstrations of background-free CEP, where drifts in mirror birefringence are intentionally negated by the measurement scheme, have reported impressive observations of weak intracavity birefringence for the purpose of quantifying the Kerr effect in gases [41], for detecting parity-nonconserving optical rotation in metastable atoms [42], and for the measurement of optical activity in chiral molecules [43, 44]. In earlier implementations of CEP, however, mirror birefringence remained a significant source of non-negligible background signal [45–50].…”

Section: Discussionmentioning

confidence: 99%

Precision interferometric measurements of mirror birefringence in high-finesse optical resonators

et al. 2016

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High-finesse optical resonators found in ultrasensitive laser spectrometers utilize supermirrors ideally consisting of isotropic high-reflectivity coatings. Strictly speaking, however, the optical coatings are often non-uniformly stressed during the deposition process and therefore do possess some small amount of birefringence. When physically mounted the cavity mirrors can be additionally stressed in such a way that large optical birefringence is induced. Here we report a direct measurement of optical birefringence in a two-mirror Fabry-Pérot cavity with R = 99.99 % by observing TEM00 mode beating during cavity decays. Experiments were performed at a wavelength of 4.53 μm, with precision limited by both quantum and technical noise sources. We report a splitting of δν = 618(1) Hz, significantly less than the intrinsic cavity linewidth of δcav ≈ 3 kHz. With a cavity free spectral range of 96.9 MHz, the equivalent fractional change in mirror refractive index due to birefringence is therefore Δn/n = 6.38(1) × 10−6.

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Section: Discussionmentioning

confidence: 99%

Precision interferometric measurements of mirror birefringence in high-finesse optical resonators

et al. 2016

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“…The fact that the light beam is trapped in a cavity and is reflected back and forth at the mirrors means that the polarization sense of the beam cannot be conserved. Nonetheless, there are reports where introducing additional optics inside the cavity was shown to help to resolve this issue . As an example, by introducing a pair of quarter wave plates inside the cavity, it will be possible to maintain the polarization of light at a fixed linear polarization state in a cavity if the quarter wave plates have their fast axes aligned to be either mutually parallel or, alternatively, at right angles to one another .…”

Section: Spectroscopic Methods To Analyze Model Heterogeneous Asymmetmentioning

confidence: 99%

“…Nonetheless, there are reports where introducing additional optics inside the cavity was shown to help to resolve this issue. 148,149 As an example, by introducing a pair of quarter wave plates inside the cavity, it will be possible to maintain the polarization of light at a fixed linear polarization state in a cavity if the quarter wave plates have their fast axes aligned to be either mutually parallel or, alternatively, at right angles to one another. 148 However, the additional optical losses that these components produce render the application of the method to the kind of samples that are of interest to us, impractical due to insufficient signal intensity.…”

Section: Spectroscopic Methods To Analyze Model Heterogeneous Asymmmentioning

confidence: 99%

Spectroscopy for model heterogeneous asymmetric catalysis

Kartouzian¹

2019

Chirality

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Heterogeneous catalysis has vastly benefited from investigations performed on model systems under well‐controlled conditions. The application of most of the techniques utilized for such studies is not feasible for asymmetric reactions as enantiomers possess identical physical and chemical properties unless while interacting with polarized light and other chiral entities. A thorough investigation of a heterogeneous asymmetric catalytic process should include probing the catalyst prior to, during, and after the reaction as well as the analysis of reaction products to evaluate the achieved enantiomeric excess. I present recent studies that demonstrate the strength of chiroptical spectroscopic methods to tackle the challenges in investigating model heterogeneous asymmetric catalysis covering all the abovementioned aspects.

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“…[14][15][16][17] Intracavity OR polarimetry is a third, less explored method to measure OR with increased sensitivity. [18][19][20] Bougas et al 18 have recently described a chiral cavity ring down (CCRD) polarimeter, which uses an intracavity modulated Faraday rotator to overcome the depolarizing effect of linear birefringence and translates optical rotation into a proportional frequency change. Their method seems to be less sensitive to polarization noise than FR and OH polarimetries.…”

Section: Introductionmentioning

confidence: 99%

Self-referenced, microdegree, optical rotation polarimeter for biomedical applications: an analysis

Weissman

Goldberg²

2015

J. Biomed. Opt

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Abstract. We comprehensively analyze the performance of a type of optical rotation (OR) polarimeter, which has been designed from the outset to fit the special requirements of two major applications: general chiral detection during the separation of optical isomers by high-pressure liquid chromatography systems in the pharmaceutical industry, and monitoring of glucose in the interstitial fluid of diabetics by a fully implanted long-term optical sensor. Both very demanding applications call for an OR polarimeter that can be miniaturized while maintaining high resolution and accuracy in the microdegree range in the face of considerable noise from various sources. These two characteristics-miniature size and immunity to noise-set this polarimeter apart from the traditional OR polarimeters currently in use, which are both bulky and very susceptible to noise. The following detailed analysis demonstrates the advantages of this polarimeter and its potential as an analytic and diagnostic tool.

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Chiral cavity ring down polarimetry: Chirality and magnetometry measurements using signal reversals

Abstract: Articles you may be interested in Chiral cavity ring down polarimetry: Chirality and magnetometry measurements using signal reversals

Cited by 39 publications

References 40 publications

Precision interferometric measurements of mirror birefringence in high-finesse optical resonators

Precision interferometric measurements of mirror birefringence in high-finesse optical resonators

Spectroscopy for model heterogeneous asymmetric catalysis

Self-referenced, microdegree, optical rotation polarimeter for biomedical applications: an analysis

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