Mode switching in bimodal microcavities and its connection to Bose condensation

Leymann, H. A. M.; Vorberg, Daniel Christian; Lettau, T.; Hopfmann, Caspar; Schneider, Christian; Kamp, M.; Höfling, Sven; Ketzmerick, Roland; Wiersig, Jan; Reitzenstein, Stephan; Eckardt, André

doi:10.1364/cleo_qels.2017.ftu4e.7

Cited by 4 publications

(8 citation statements)

References 9 publications

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“…This is indeed true for Brillouin lasers because of the phase‐matching condition . However, in Raman lasers, as the phase matching condition is automatically satisfied (see Figure a), CLS could lead to many lasing modes being coupled together, hence rendering the behavior of such lasers to be quite unique, especially for multimode lasing . As a specific example, here we show, both theoretically and experimentally, that CLS can induce mode‐switching in multimode Raman lasers.…”

Section: Introductionmentioning

confidence: 56%

Raman Laser Switching Induced by Cascaded Light Scattering

Kasumie

Lei

Ward

et al. 2019

Laser & Photonics Reviews

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It is shown that, in multimode Raman lasers, cascaded light scattering (CLS) not only extends the optical frequency range, but can also modulate the laser dynamics. The origin of this phenomenon lies in the fact that many Raman lasing modes are directly correlated through CLS. The coupled‐mode equations only describe single‐mode cascaded Raman lasers and are insufficient for describing the multimode case. In this work, additional terms are introduced to account for intermodal interaction and, therefrom the physical mechanism behind the mode‐switching phenomenon is revealed. Additionally, mode‐switching controlled solely by a single‐mode pump in a whispering gallery mode (WGM) silica Raman laser is demonstrated. As the intracavity pump power is increased, laser switching happens between two adjacent WGMs in the same mode family.

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Section: Introductionmentioning

confidence: 56%

Raman Laser Switching Induced by Cascaded Light Scattering

Kasumie

Lei

Ward

et al. 2019

Laser & Photonics Reviews

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“…The system then features multimode condensation [20,23] as a clear signature of non-equilibrium behavior. It has been noted that multimode systems driven far from equilibrium can show multimode condensation [24], and that the kinetics of two-mode laser systems can be made to show a sort of minimalist Bose-Einstein condensation [25,26].…”

mentioning

confidence: 99%

Decondensation in Nonequilibrium Photonic Condensates: When Less Is More

2018

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We investigate the steady state of a system of photons in a pumped dye-filled microcavity. By varying pump and thermalization the system can be tuned between Bose-Einstein condensation, multimode condensation, and lasing. We present a rich nonequilibrium phase diagram which exhibits transitions between these phases, including decondensation of individual modes under conditions that would typically favor condensation.

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“…The most efficient way to solve the model are Monte Carlo simulations based on the Gillespie algorithm. [144] More recently, a two-channel TES has been introduced that can simultaneously detect the photon number-resolved light emission of the two orthogonal modes. [146] An example of the resulting joint photon-number distribution P ij is depicted in Figure 6.…”

Section: Photon Number-resolved Measurementsmentioning

confidence: 99%

“…Experiments on bimodal lasers have demonstrated a possible switching of the mode properties occurring when the pump power is increased beyond the laser threshold [ 140,144 ] (not seen in Figure 5a). This phenomenon is known from VCSELs as “polarization switching.” [ 72 ]…”

Section: Physics and Prospects Of Bimodal Microlasersmentioning

confidence: 99%