Preprint

PUBDB-2024-01361

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Optical cavity characterization with a mode-matched heterodyne sensing scheme

Spector, A. D. (Corresponding author)DESY* ; Kozlowski, T.DESY*

2024

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Please use a persistent id in citations: doi:10.3204/PUBDB-2024-01361

Report No.: DESY-24-050; arXiv:2404.07597

Abstract: We describe a technique for measuring the complex reflectivity of an optical cavity with a resonant local oscillator laser and an auxiliary probe laser, each coupled via opposite ends of the cavity. A heterodyne sensing scheme is then used to observe the phase and amplitude of the interference beat-note between the promptly reflected field and the cavity transmitted field injected through the far mirror. Since the local oscillator laser must pass through the cavity before interfering with the probe laser these measurements are not only independent of the spatial coupling of either laser to the cavity, but also obtained at the in-situ position of the cavity Eigenmode. This technique was demonstrated on a 19 m cavity to measure the individual transmissivities of each of the mirrors as well as the round trip optical losses to an accuracy of several parts per million.

Note: 16 pages, 6 figures, 1 table

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Contributing Institute(s):

1. Any Light Particle Search (ALPS)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)
2. DFG project G:(GEPRIS)390833306 - EXC 2121: Quantum Universe (390833306) (390833306)
3. PHGS, VH-GS-500 - PIER Helmholtz Graduate School (2015_IFV-VH-GS-500) (2015_IFV-VH-GS-500)

Experiment(s):

1. Any Light Particle Search

Appears in the scientific report 2024

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Database coverage:
; ; Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Spector, A. D. (Corresponding author)DESY* ; Kozlowski, T.DESY*
Optical cavity characterization with a mode-matched heterodyne sensing scheme
Optics express 32(16), 27112 (2024) [10.1364/OE.527344]2024     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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