Experimental and theoretical investigation of fiber ring laser dynamics and transient analysis

K. Vijayraghavan, G. Stewart

Research output: Contribution to conferencePaper

Abstract

We report the experimental and theoretical studies on the dynamics of a fiber ring laser system which contains a length of erbium doped fiber pumped at 980nm connected to a fiber loop consisting of a micro-optic gas cell and a tunable bandpass filter. Due to a long loop length ~60m of the system, the number of cavity modes present in the 1nm filter bandwidth is extremely large. As a result, the effect of spontaneous emission into these laser modes plays an important role in determining the dynamics of the laser. A theoretical model which incorporates the effect of spontaneous emission into multiple laser modes is described and it is shown to be in agreement with experimental results obtained. A detailed analysis has been performed on the relaxation oscillations induced during the transient operation of the laser with the aim of using it as a tool for obtaining laser parameters
Original languageEnglish
Number of pages6
Publication statusPublished - 2004
Event7th International Conference on Optoelectronics, Fiber Optics and Photonics - Kerala, India
Duration: 8 Dec 200411 Dec 2004

Conference

Conference7th International Conference on Optoelectronics, Fiber Optics and Photonics
Abbreviated titlePhotonics 2004
CountryIndia
CityKerala
Period8/12/0411/12/04

Fingerprint

ring lasers
fiber lasers
laser modes
spontaneous emission
lasers
fibers
bandpass filters
erbium
optics
bandwidth
filters
oscillations
cavities
cells
gases

Keywords

  • fiber ring laser
  • fiber amplifiers
  • intra-cavity absorption
  • spontaneous emission
  • relaxation oscillations
  • experimental
  • theoretical investigation
  • dynamics
  • transient analysis

Cite this

Vijayraghavan, K., & Stewart, G. (2004). Experimental and theoretical investigation of fiber ring laser dynamics and transient analysis. Paper presented at 7th International Conference on Optoelectronics, Fiber Optics and Photonics , Kerala, India.
Vijayraghavan, K. ; Stewart, G. / Experimental and theoretical investigation of fiber ring laser dynamics and transient analysis. Paper presented at 7th International Conference on Optoelectronics, Fiber Optics and Photonics , Kerala, India.6 p.
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keywords = "fiber ring laser, fiber amplifiers, intra-cavity absorption, spontaneous emission, relaxation oscillations, experimental, theoretical investigation, dynamics, transient analysis",
author = "K. Vijayraghavan and G. Stewart",
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note = "7th International Conference on Optoelectronics, Fiber Optics and Photonics , Photonics 2004 ; Conference date: 08-12-2004 Through 11-12-2004",

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Vijayraghavan, K & Stewart, G 2004, 'Experimental and theoretical investigation of fiber ring laser dynamics and transient analysis' Paper presented at 7th International Conference on Optoelectronics, Fiber Optics and Photonics , Kerala, India, 8/12/04 - 11/12/04, .

Experimental and theoretical investigation of fiber ring laser dynamics and transient analysis. / Vijayraghavan, K.; Stewart, G.

2004. Paper presented at 7th International Conference on Optoelectronics, Fiber Optics and Photonics , Kerala, India.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Experimental and theoretical investigation of fiber ring laser dynamics and transient analysis

AU - Vijayraghavan, K.

AU - Stewart, G.

PY - 2004

Y1 - 2004

N2 - We report the experimental and theoretical studies on the dynamics of a fiber ring laser system which contains a length of erbium doped fiber pumped at 980nm connected to a fiber loop consisting of a micro-optic gas cell and a tunable bandpass filter. Due to a long loop length ~60m of the system, the number of cavity modes present in the 1nm filter bandwidth is extremely large. As a result, the effect of spontaneous emission into these laser modes plays an important role in determining the dynamics of the laser. A theoretical model which incorporates the effect of spontaneous emission into multiple laser modes is described and it is shown to be in agreement with experimental results obtained. A detailed analysis has been performed on the relaxation oscillations induced during the transient operation of the laser with the aim of using it as a tool for obtaining laser parameters

AB - We report the experimental and theoretical studies on the dynamics of a fiber ring laser system which contains a length of erbium doped fiber pumped at 980nm connected to a fiber loop consisting of a micro-optic gas cell and a tunable bandpass filter. Due to a long loop length ~60m of the system, the number of cavity modes present in the 1nm filter bandwidth is extremely large. As a result, the effect of spontaneous emission into these laser modes plays an important role in determining the dynamics of the laser. A theoretical model which incorporates the effect of spontaneous emission into multiple laser modes is described and it is shown to be in agreement with experimental results obtained. A detailed analysis has been performed on the relaxation oscillations induced during the transient operation of the laser with the aim of using it as a tool for obtaining laser parameters

KW - fiber ring laser

KW - fiber amplifiers

KW - intra-cavity absorption

KW - spontaneous emission

KW - relaxation oscillations

KW - experimental

KW - theoretical investigation

KW - dynamics

KW - transient analysis

M3 - Paper

ER -

Vijayraghavan K, Stewart G. Experimental and theoretical investigation of fiber ring laser dynamics and transient analysis. 2004. Paper presented at 7th International Conference on Optoelectronics, Fiber Optics and Photonics , Kerala, India.