Control of the spatial emission structure of broad-area vertical-cavity surface-emitting lasers by feedback

M. Schulz-Ruhtenberg, Y. Tanguy, K.F. Huang, R. Jager, T. Ackemann

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The wave number of transverse spatial structures in broad-area vertical-cavity surface-emitting lasers (VCSELs) is controlled via frequency-selective feedback from an external self-imaging cavity in a broad range of wave numbers and emission frequencies. The selected states follow the dispersion curves of the free-running laser. A control range of about 2.5 µm−1 in spatial frequency space and 2.5 nm in emission wavelength was obtained for square VCSELs and of about 3 µm−1 and 8 nm for circular VCSELs having a different dispersion curve. By spatial filtering in Fourier space, the shape of the structures can also be controlled to some extent. It is argued that the feedback techniques are useful to 'probe' emission states of the free-running laser.
Original languageEnglish
Article number055101
Number of pages9
JournalJournal of Physics D: Applied Physics
Volume42
Issue number5
DOIs
Publication statusPublished - 7 Mar 2009

Fingerprint

Surface emitting lasers
surface emitting lasers
Feedback
cavities
Lasers
trajectory control
spatial filtering
curves
lasers
Imaging techniques
Wavelength
probes
wavelengths

Keywords

  • semiconductor lasers
  • laser diodes
  • resonators
  • cavities
  • amplifiers
  • arrays
  • beam characteristics
  • beam intensity
  • spatial pattern formation Optics
  • quantum optics
  • lasers

Cite this

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title = "Control of the spatial emission structure of broad-area vertical-cavity surface-emitting lasers by feedback",
abstract = "The wave number of transverse spatial structures in broad-area vertical-cavity surface-emitting lasers (VCSELs) is controlled via frequency-selective feedback from an external self-imaging cavity in a broad range of wave numbers and emission frequencies. The selected states follow the dispersion curves of the free-running laser. A control range of about 2.5 µm−1 in spatial frequency space and 2.5 nm in emission wavelength was obtained for square VCSELs and of about 3 µm−1 and 8 nm for circular VCSELs having a different dispersion curve. By spatial filtering in Fourier space, the shape of the structures can also be controlled to some extent. It is argued that the feedback techniques are useful to 'probe' emission states of the free-running laser.",
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doi = "10.1088/0022-3727/42/5/055101",
language = "English",
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journal = "Journal of Physics D: Applied Physics",
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Control of the spatial emission structure of broad-area vertical-cavity surface-emitting lasers by feedback. / Schulz-Ruhtenberg, M.; Tanguy, Y.; Huang, K.F.; Jager, R.; Ackemann, T.

In: Journal of Physics D: Applied Physics, Vol. 42, No. 5, 055101, 07.03.2009.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Control of the spatial emission structure of broad-area vertical-cavity surface-emitting lasers by feedback

AU - Schulz-Ruhtenberg, M.

AU - Tanguy, Y.

AU - Huang, K.F.

AU - Jager, R.

AU - Ackemann, T.

PY - 2009/3/7

Y1 - 2009/3/7

N2 - The wave number of transverse spatial structures in broad-area vertical-cavity surface-emitting lasers (VCSELs) is controlled via frequency-selective feedback from an external self-imaging cavity in a broad range of wave numbers and emission frequencies. The selected states follow the dispersion curves of the free-running laser. A control range of about 2.5 µm−1 in spatial frequency space and 2.5 nm in emission wavelength was obtained for square VCSELs and of about 3 µm−1 and 8 nm for circular VCSELs having a different dispersion curve. By spatial filtering in Fourier space, the shape of the structures can also be controlled to some extent. It is argued that the feedback techniques are useful to 'probe' emission states of the free-running laser.

AB - The wave number of transverse spatial structures in broad-area vertical-cavity surface-emitting lasers (VCSELs) is controlled via frequency-selective feedback from an external self-imaging cavity in a broad range of wave numbers and emission frequencies. The selected states follow the dispersion curves of the free-running laser. A control range of about 2.5 µm−1 in spatial frequency space and 2.5 nm in emission wavelength was obtained for square VCSELs and of about 3 µm−1 and 8 nm for circular VCSELs having a different dispersion curve. By spatial filtering in Fourier space, the shape of the structures can also be controlled to some extent. It is argued that the feedback techniques are useful to 'probe' emission states of the free-running laser.

KW - semiconductor lasers

KW - laser diodes

KW - resonators

KW - cavities

KW - amplifiers

KW - arrays

KW - beam characteristics

KW - beam intensity

KW - spatial pattern formation Optics

KW - quantum optics

KW - lasers

U2 - 10.1088/0022-3727/42/5/055101

DO - 10.1088/0022-3727/42/5/055101

M3 - Article

VL - 42

JO - Journal of Physics D: Applied Physics

JF - Journal of Physics D: Applied Physics

SN - 0022-3727

IS - 5

M1 - 055101

ER -