Polarization dynamics in vertical-cavity surface emitting lasers

Thorsten Ackemann, M. Sondermann

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Experiments and their interpretation on polarization dynamics and polarization switching in vertical-cavity surface-emitting lasers operated in the fundamental transverse mode regime are reviewed. Important observations are switching events to a mode with the lower unsaturated gain and the existence of elliptically polarized dynamical transition states after the destabilization of the low-frequency polarization mode. The observations demonstrate the need to consider explicitly the phase properties of the optical field as well as nonlinear effects affecting polarization selection above threshold. Good qualitative agreement is found with a model which takes into account the spin degrees of freedom of the light field as well as of the carriers (`spin-flip model'), if the spin-flip rate is taken to be some tens of $10^9$~s$^{-1}$. This constitutes a strong -- though indirect -- indication that spin dependent processes are important in polarization selection in the devices investigated.
LanguageEnglish
Title of host publicationTrends in spatiotemporal dynamics in lasers
Subtitle of host publicationinstabilities, polarization dynamics, and spatial structures
EditorsO.G. Calderon, J.M Guerra
Place of PublicationKeralia
Pages82-110
Number of pages29
Publication statusPublished - 2005

Fingerprint

surface emitting lasers
cavities
polarization
destabilization
indication
degrees of freedom
low frequencies
thresholds

Keywords

  • vertical cavity surface emitting laser
  • polarization

Cite this

Ackemann, T., & Sondermann, M. (2005). Polarization dynamics in vertical-cavity surface emitting lasers. In O. G. Calderon, & J. M. Guerra (Eds.), Trends in spatiotemporal dynamics in lasers: instabilities, polarization dynamics, and spatial structures (pp. 82-110). Keralia.
Ackemann, Thorsten ; Sondermann, M. / Polarization dynamics in vertical-cavity surface emitting lasers. Trends in spatiotemporal dynamics in lasers: instabilities, polarization dynamics, and spatial structures. editor / O.G. Calderon ; J.M Guerra . Keralia, 2005. pp. 82-110
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Ackemann, T & Sondermann, M 2005, Polarization dynamics in vertical-cavity surface emitting lasers. in OG Calderon & JM Guerra (eds), Trends in spatiotemporal dynamics in lasers: instabilities, polarization dynamics, and spatial structures. Keralia, pp. 82-110.

Polarization dynamics in vertical-cavity surface emitting lasers. / Ackemann, Thorsten; Sondermann, M.

Trends in spatiotemporal dynamics in lasers: instabilities, polarization dynamics, and spatial structures. ed. / O.G. Calderon; J.M Guerra . Keralia, 2005. p. 82-110.

Research output: Chapter in Book/Report/Conference proceedingChapter

TY - CHAP

T1 - Polarization dynamics in vertical-cavity surface emitting lasers

AU - Ackemann, Thorsten

AU - Sondermann, M.

PY - 2005

Y1 - 2005

N2 - Experiments and their interpretation on polarization dynamics and polarization switching in vertical-cavity surface-emitting lasers operated in the fundamental transverse mode regime are reviewed. Important observations are switching events to a mode with the lower unsaturated gain and the existence of elliptically polarized dynamical transition states after the destabilization of the low-frequency polarization mode. The observations demonstrate the need to consider explicitly the phase properties of the optical field as well as nonlinear effects affecting polarization selection above threshold. Good qualitative agreement is found with a model which takes into account the spin degrees of freedom of the light field as well as of the carriers (`spin-flip model'), if the spin-flip rate is taken to be some tens of $10^9$~s$^{-1}$. This constitutes a strong -- though indirect -- indication that spin dependent processes are important in polarization selection in the devices investigated.

AB - Experiments and their interpretation on polarization dynamics and polarization switching in vertical-cavity surface-emitting lasers operated in the fundamental transverse mode regime are reviewed. Important observations are switching events to a mode with the lower unsaturated gain and the existence of elliptically polarized dynamical transition states after the destabilization of the low-frequency polarization mode. The observations demonstrate the need to consider explicitly the phase properties of the optical field as well as nonlinear effects affecting polarization selection above threshold. Good qualitative agreement is found with a model which takes into account the spin degrees of freedom of the light field as well as of the carriers (`spin-flip model'), if the spin-flip rate is taken to be some tens of $10^9$~s$^{-1}$. This constitutes a strong -- though indirect -- indication that spin dependent processes are important in polarization selection in the devices investigated.

KW - vertical cavity surface emitting laser

KW - polarization

M3 - Chapter

SN - 81-7736-235-6

SP - 82

EP - 110

BT - Trends in spatiotemporal dynamics in lasers

A2 - Calderon, O.G.

A2 - Guerra , J.M

CY - Keralia

ER -

Ackemann T, Sondermann M. Polarization dynamics in vertical-cavity surface emitting lasers. In Calderon OG, Guerra JM, editors, Trends in spatiotemporal dynamics in lasers: instabilities, polarization dynamics, and spatial structures. Keralia. 2005. p. 82-110