Improved performance of semiconductor laser tracking frequency gauge

Autor:	Kaplan, D. M., Roberts, T. J., Phillips, J. D., Reasenberg, R. D.
Rok vydání:	2017
Předmět:	Astrophysics - Instrumentation and Methods for Astrophysics High Energy Physics - Experiment Physics - Atomic Physics
Zdroj:	JINST 13 (2018) P03008
Druh dokumentu:	Working Paper
DOI:	10.1088/1748-0221/13/03/P03008
Popis:	We describe new results from the semiconductor-laser tracking frequency gauge, an instrument that can perform sub-picometer distance measurements and has applications in gravity research and in space-based astronomical instruments proposed for the study of light from extrasolar planets. Compared with previous results, we have improved incremental distance accuracy by a factor of two, to 0.9 pm in 80 s averaging time, and absolute distance accuracy by a factor of 20, to 0.17 $\mu$m in 1000 s. After an interruption of operation of a tracking frequency gauge used to control a distance, it is now possible, using a nonresonant measurement interferometer, to restore the distance to picometer accuracy by combining absolute and incremental distance measurements. Comment: 8 pages, 4 figures. To appear in JINST. (This version with new figures 3 and 4 with improved graphic quality and performance.)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1712.03526 Zobrazit plný text záznamu View this record from Arxiv