Reduction of residual amplitude modulation to 1 x 10(-6) for frequency modulation and laser stabilization
- Author(s)
- W. Zhang, M. J. Martin, C. Benko, J. L. Hall, J. Ye, C. Hagemann, T. Legero, U. Sterr, F. Riehle, G. D. Cole, M. Aspelmeyer
- Abstract
Active control and cancellation of residual amplitude modulation (RAM) in phase modulation of an optical carrier is one of the key technologies for achieving the ultimate stability of a laser locked to an ultrastable optical cavity. Furthermore, such techniques are versatile tools in various frequency modulation-based spectroscopy applications. In this Letter we report a simple and robust approach to actively stabilize RAM in an optical phase modulation process. We employ a waveguide-based electro-optic modulator (EOM) to provide phase modulation and implement an active servo with both DC electric field and temperature feedback onto the EOM to cancel both the in-phase and quadrature components of the RAM. This technique allows RAM control on the parts-per-million level where RAM-induced frequency instability is comparable to or lower than the fundamental thermal noise limit of the best available optical cavities.
- Organisation(s)
- Quantum Optics, Quantum Nanophysics and Quantum Information
- External organisation(s)
- National Institute of Standards and Technology, Gaithersburg, University of Colorado, Boulder, Physikalisch-Technische Bundesanstalt
- Journal
- Optics Letters
- Volume
- 39
- Pages
- 1980-1983
- No. of pages
- 4
- ISSN
- 0146-9592
- DOI
- https://doi.org/10.1364/OL.39.001980
- Publication date
- 04-2014
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103026 Quantum optics
- Keywords
- ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/reduction-of-residual-amplitude-modulation-to-1-x-106-for-frequency-modulation-and-laser-stabilization(15e316ec-0f73-472b-9faa-f0096a09901a).html