Demonstration of displacement-measurement-sensitivity proportional to inverse group index of intra-cavity medium in a ring resonator

G. S. Pati; M. Salit; K. Salit; M. S. Shahriar

doi:10.1016/j.optcom.2008.06.075

Demonstration of displacement-measurement-sensitivity proportional to inverse group index of intra-cavity medium in a ring resonator

G. S. Pati^*, M. Salit, K. Salit, M. S. Shahriar

^*Corresponding author for this work

Electrical and Computer Engineering

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

58 Scopus citations

Abstract

We show that an intra-cavity medium with dispersion modifies the sensitivity of the cavity resonance frequency to a change in its length by a factor inversely proportional to the group index, n_g, in the medium. For a positive group index characteristic of the slow-light media, with a very large value of n_g, this effect can help in constructing highly frequency-stable cavities for various potential applications without taking additional measures for mechanical stability. For a negative group index characteristic of the fast-light media, with n_g close to a null value, this implies enhancement in sensitivity to change in cavity length. This enhancement in turn can be employed to increase the sensitivity of a ring laser gyroscope.

Original language	English (US)
Pages (from-to)	4931-4935
Number of pages	5
Journal	Optics Communications
Volume	281
Issue number	19
DOIs	https://doi.org/10.1016/j.optcom.2008.06.075
State	Published - Oct 1 2008

Funding

This work was supported in part by the Hewlett–Packard Co. through DARPA and the Air Force Office of Scientific Research under AFOSR Contract No. FA9550-05-C-0017, and by AFOSR Grant No. FA9550-04-1-0189.

Keywords

020.1670
020.3690
300.6450

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

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10.1016/j.optcom.2008.06.075

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title = "Demonstration of displacement-measurement-sensitivity proportional to inverse group index of intra-cavity medium in a ring resonator",

abstract = "We show that an intra-cavity medium with dispersion modifies the sensitivity of the cavity resonance frequency to a change in its length by a factor inversely proportional to the group index, ng, in the medium. For a positive group index characteristic of the slow-light media, with a very large value of ng, this effect can help in constructing highly frequency-stable cavities for various potential applications without taking additional measures for mechanical stability. For a negative group index characteristic of the fast-light media, with ng close to a null value, this implies enhancement in sensitivity to change in cavity length. This enhancement in turn can be employed to increase the sensitivity of a ring laser gyroscope.",

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author = "Pati, {G. S.} and M. Salit and K. Salit and Shahriar, {M. S.}",

note = "Funding Information: This work was supported in part by the Hewlett–Packard Co. through DARPA and the Air Force Office of Scientific Research under AFOSR Contract No. FA9550-05-C-0017, and by AFOSR Grant No. FA9550-04-1-0189.",

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AU - Pati, G. S.

AU - Salit, M.

AU - Salit, K.

AU - Shahriar, M. S.

N1 - Funding Information: This work was supported in part by the Hewlett–Packard Co. through DARPA and the Air Force Office of Scientific Research under AFOSR Contract No. FA9550-05-C-0017, and by AFOSR Grant No. FA9550-04-1-0189.

PY - 2008/10/1

Y1 - 2008/10/1

N2 - We show that an intra-cavity medium with dispersion modifies the sensitivity of the cavity resonance frequency to a change in its length by a factor inversely proportional to the group index, ng, in the medium. For a positive group index characteristic of the slow-light media, with a very large value of ng, this effect can help in constructing highly frequency-stable cavities for various potential applications without taking additional measures for mechanical stability. For a negative group index characteristic of the fast-light media, with ng close to a null value, this implies enhancement in sensitivity to change in cavity length. This enhancement in turn can be employed to increase the sensitivity of a ring laser gyroscope.

AB - We show that an intra-cavity medium with dispersion modifies the sensitivity of the cavity resonance frequency to a change in its length by a factor inversely proportional to the group index, ng, in the medium. For a positive group index characteristic of the slow-light media, with a very large value of ng, this effect can help in constructing highly frequency-stable cavities for various potential applications without taking additional measures for mechanical stability. For a negative group index characteristic of the fast-light media, with ng close to a null value, this implies enhancement in sensitivity to change in cavity length. This enhancement in turn can be employed to increase the sensitivity of a ring laser gyroscope.

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JF - Optics Communications

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ER -

Demonstration of displacement-measurement-sensitivity proportional to inverse group index of intra-cavity medium in a ring resonator

Abstract

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Keywords

ASJC Scopus subject areas

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