Frequency Comparison of 127I2-Stabilized Nd: YAG Laser

Published

April 1, 1999

Author(s)

F L. Hong, K Ishikawa, J Yoda, J Ye, L -. Ma, John L. Hall

Abstract

A first international comparison of I₂-stabilized Nd: YAG lasers has been made between the National Research Laboratory of Metrology (NRLM), Tsukuba, Japan, the Joint Institute for Laboratory Astrophysics JILA (formerly the Joint Institute for Laboratory Astrophysics), Boulder, CO, the National Institute of Standards and Technology (NIST), Boulder, and the University of Colorado, Boulder. The results of the comparison show that the square root Allan variance of the portable NRLM laser has reached 2 x 10¹⁴ when the integration time is larger than 300 s. Matrix measurements were made for five hyperfine components from a₆ to a₁₀ of the R(56) 32-0 line. The averaged frequency difference between the NRLM and JILA lasers for four measurements made on three separate days was - 4996 Hz (NRLM-JILA, at 532 nm) with a standard deviation of 88 Hz.

Citation

IEEE Transactions on Instrumentation and Measurement

Volume

48

Issue

No. 2

Pub Type

Journals

Keywords

frequency control, frequency stability, laser stability, lasers, neodymium, spectroscopy, standards, YAG

Citation

Hong, F. , Ishikawa, K. , Yoda, J. , Ye, J. , Ma, L. and Hall, J. (1999), Frequency Comparison of ¹²⁷I₂-Stabilized Nd: YAG Laser, IEEE Transactions on Instrumentation and Measurement (Accessed October 22, 2025)