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  • Skehan, Connor,1993Chalmers tekniska högskola,Chalmers University of Technology (author)

Thermorefractive noise reduction of photonic molecule frequency combs using an all-optical servo loop

  • Article/chapterEnglish2023

Publisher, publication year, extent ...

  • 2023
  • electronicrdacarrier

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  • LIBRIS-ID:oai:research.chalmers.se:9df105c8-7773-42ea-b05a-34dfd55c9664
  • https://doi.org/10.1364/OE.496895DOI
  • https://research.chalmers.se/publication/538314URI

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  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • Phase and frequency noise originating from thermal fluctuations is commonly a limiting factor in integrated photonic cavities. To reduce this noise, one may drive a secondary “servo/cooling” laser into the blue side of a cavity resonance. Temperature fluctuations which shift the resonance will then change the amount of servo/cooling laser power absorbed by the device as the laser moves relatively out of or into the resonance, and thereby effectively compensate for the fluctuation. In this paper, we use a low noise laser to demonstrate this principle for the first time in a frequency comb generated from a normal dispersion photonic molecule micro-resonator. Significantly, this configuration can be used with the servo/cooling laser power above the usual nonlinearity threshold since resonances with normal dispersion are available. We report a 50 % reduction in frequency noise of the comb lines in the frequency range of 10 kHz to 1 MHz and investigate the effect of the secondary servo/cooling noise on the comb.

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Added entries (persons, corporate bodies, meetings, titles ...)

  • Karunakaran, Anamika NairDanmarks Tekniske Universitet,Technical University of Denmark (author)
  • Varming, Poul (author)
  • Helgason, Òskar Bjarki,1989Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)skarb (author)
  • Montague, Patrick B. (author)
  • Schröder, Jochen,1976Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)jochens (author)
  • Pu, MinhaoDanmarks Tekniske Universitet,Technical University of Denmark (author)
  • Yvind, K.Danmarks Tekniske Universitet,Technical University of Denmark (author)
  • Torres Company, Victor,1981Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)torresv (author)
  • Andrekson, Peter,1960Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)andrekso (author)
  • Chalmers tekniska högskolaDanmarks Tekniske Universitet (creator_code:org_t)

Related titles

  • In:Optics Express31:21, s. 35208-352171094-40871094-4087

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