Modeling of mode-locking in a laser with spatially separate gain media

R.M. Oldenbeuving, C.J. Lee, P.D. van Voorst, H.L. Offerhaus, K.-J. Boller

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

We present a novel laser mode-locking scheme and discuss its unusual properties and feasibility using a theoretical model. A large set of single-frequency continuous-wave lasers oscillate by amplification in spatially separated gain media. They are mutually phase-locked by nonlinear feedback from a common saturable absorber. As a result, ultra short pulses are generated. The new scheme offers three significant benefits: the light that is amplified in each medium is continuous wave, thereby avoiding issues related to group velocity dispersion and nonlinear effects that can perturb the pulse shape. The set of frequencies on which the laser oscillates, and therefore the pulse repetition rate, is controlled by the geometry of resonator-internal optical elements, not by the cavity length. Finally, the bandwidth of the laser can be controlled by switching gain modules on and off. This scheme offers a route to mode-locked lasers with high average output power, repetition rates that can be scaled into the THz range, and a bandwidth that can be dynamically controlled. The approach is particularly suited for implementation using semiconductor diode laser arrays.
Original languageEnglish
Pages (from-to)22996-23008
Number of pages12
JournalOptics express
Volume18
Issue number22
DOIs
Publication statusPublished - 2010

Fingerprint

locking
laser mode locking
nonlinear feedback
lasers
bandwidth
semiconductor diodes
laser arrays
pulse repetition rate
continuous wave lasers
pulses
group velocity
continuous radiation
repetition
absorbers
modules
resonators
routes
cavities
output
geometry

Keywords

  • Locked lasers
  • Laser beam combining
  • Ultrafast Lasers

Cite this

Oldenbeuving, R.M. ; Lee, C.J. ; van Voorst, P.D. ; Offerhaus, H.L. ; Boller, K.-J. / Modeling of mode-locking in a laser with spatially separate gain media. In: Optics express. 2010 ; Vol. 18, No. 22. pp. 22996-23008.
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abstract = "We present a novel laser mode-locking scheme and discuss its unusual properties and feasibility using a theoretical model. A large set of single-frequency continuous-wave lasers oscillate by amplification in spatially separated gain media. They are mutually phase-locked by nonlinear feedback from a common saturable absorber. As a result, ultra short pulses are generated. The new scheme offers three significant benefits: the light that is amplified in each medium is continuous wave, thereby avoiding issues related to group velocity dispersion and nonlinear effects that can perturb the pulse shape. The set of frequencies on which the laser oscillates, and therefore the pulse repetition rate, is controlled by the geometry of resonator-internal optical elements, not by the cavity length. Finally, the bandwidth of the laser can be controlled by switching gain modules on and off. This scheme offers a route to mode-locked lasers with high average output power, repetition rates that can be scaled into the THz range, and a bandwidth that can be dynamically controlled. The approach is particularly suited for implementation using semiconductor diode laser arrays.",
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Modeling of mode-locking in a laser with spatially separate gain media. / Oldenbeuving, R.M.; Lee, C.J.; van Voorst, P.D.; Offerhaus, H.L.; Boller, K.-J.

In: Optics express, Vol. 18, No. 22, 2010, p. 22996-23008.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Modeling of mode-locking in a laser with spatially separate gain media

AU - Oldenbeuving, R.M.

AU - Lee, C.J.

AU - van Voorst, P.D.

AU - Offerhaus, H.L.

AU - Boller, K.-J.

PY - 2010

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AB - We present a novel laser mode-locking scheme and discuss its unusual properties and feasibility using a theoretical model. A large set of single-frequency continuous-wave lasers oscillate by amplification in spatially separated gain media. They are mutually phase-locked by nonlinear feedback from a common saturable absorber. As a result, ultra short pulses are generated. The new scheme offers three significant benefits: the light that is amplified in each medium is continuous wave, thereby avoiding issues related to group velocity dispersion and nonlinear effects that can perturb the pulse shape. The set of frequencies on which the laser oscillates, and therefore the pulse repetition rate, is controlled by the geometry of resonator-internal optical elements, not by the cavity length. Finally, the bandwidth of the laser can be controlled by switching gain modules on and off. This scheme offers a route to mode-locked lasers with high average output power, repetition rates that can be scaled into the THz range, and a bandwidth that can be dynamically controlled. The approach is particularly suited for implementation using semiconductor diode laser arrays.

KW - Locked lasers

KW - Laser beam combining

KW - Ultrafast Lasers

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