Thermal lensing compensation principle for the ACIGA's High Optical Power Test Facility Test 1

Jerome Degallaix, B.J.J. Slagmolen, Chunnong Zhao, Li Ju, David Blair

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    Thermal lensing is becoming recognized as one of the dominant obstacles to the second generation of laser interferometric gravitational wave detectors. Very high optical power is required to circulate in the interferometer to reach the sensitivity goal, creating strong thermal induced wavefront distortion. These effects will be studied at the High Optical Power Test Facility in Gingin, Western Australia. In this paper, we present simulation results for the first test planned for the middle of 2004. This experiment will produce 5 kW of optical power circulating inside a Fabry-Perot cavity and will demonstrate large thermal lensing effects.Two compensation methods were investigated to offset the negative effect of thermal lensing on the cavity: a compensation plate within the arm cavity and adaptive laser mode matching. Advantages and disadvantages of both systems are discussed.
    Original languageEnglish
    Pages (from-to)1581-1589
    JournalGeneral Relativity and Gravitation
    Volume37
    Issue number9
    DOIs
    Publication statusPublished - 2005

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