Ultrastable lasers based on vibration insensitive cavities

We present two ultrastable lasers based on two vibration insensitive cavity designs, one with vertical optical axis geometry, the other horizontal. Ultrastable cavities are constructed with fused silica mirror substrates, shown to decrease the thermal noise limit, in order to improve the frequency s...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2009-05, Vol.79 (5), Article 053829
Main Authors: Millo, J., Magalhães, D. V., Mandache, C., Le Coq, Y., English, E. M. L., Westergaard, P. G., Lodewyck, J., Bize, S., Lemonde, P., Santarelli, G.
Format: Article
Language:English
Subjects:
BEAMS
DESIGN
FREQUENCY MEASUREMENT
GEOMETRY
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
LASER CAVITIES
LASER MIRRORS
LASERS
LENGTH
NOISE
RESONATORS
SENSITIVITY
SILICA
STABILITY
SUBSTRATES
TUNING
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Summary:We present two ultrastable lasers based on two vibration insensitive cavity designs, one with vertical optical axis geometry, the other horizontal. Ultrastable cavities are constructed with fused silica mirror substrates, shown to decrease the thermal noise limit, in order to improve the frequency stability over previous designs. Vibration sensitivity components measured are equal to or better than 1.5x10{sup -11}/m s{sup -2} for each spatial direction, which shows significant improvement over previous studies. We have tested the very low dependence on the position of the cavity support points, in order to establish that our designs eliminate the need for fine tuning to achieve extremely low vibration sensitivity. Relative frequency measurements show that at least one of the stabilized lasers has a stability better than 5.6x10{sup -16} at 1 s, which is the best result obtained for this length of cavity.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.79.053829