Title :
Fiber-coupled and monolithic cryogenic optical resonators
Author :
Brazmaier, C. ; Pradl, O. ; Muller, H. ; Eiermann, B. ; Peters, A. ; Mlynek, J. ; Schiller, S.
Author_Institution :
Fak. fur Phys., Konstanz Univ., Germany
Abstract :
We have developed a fiber coupled cryogenic optical sapphire resonator for the frequency stabilization of a Nd:YAG laser. With this method a frequency instability of 2/spl middot/10/sup -15/ for /spl tau/=1 hour integration time has been achieved. This is among the lowest values ever obtained for optical oscillators. We also present a new approach to test the time-independence of the fine structure constant, based on the use of a single monolithic resonator. Preliminary results on the development of suitable resonators are described.
Keywords :
constants; dielectric resonators; frequency standards; laser frequency stability; optical fiber couplers; optical resonators; sapphire; 1 hour; Al/sub 2/O/sub 3/; Nd:YAG laser; YAG:Nd; YAl5O12:Nd; cryogenic optical sapphire resonator; fiber coupled resonator; fine structure constant; frequency instability; frequency stabilization; monolithic cryogenic optical resonator; reference resonators; Cryogenics; Fiber lasers; Frequency; Laser beams; Laser stability; Optical coupling; Optical fiber cables; Optical fiber polarization; Optical resonators; Testing;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.850941
