Abstract

A novel composite cavity laser containing an He–Ne plasma tube, a heated LiNbO₃ crystal, and a cell of iodine vapor has been used to generate 1153-nm (260-THz) radiation in a single mode and to double the frequency of this radiation into the yellow part of the visible spectrum at 576 nm (520 THz). By resonating the yellow light in the cavity, Doppler-free hyperfine structure components of the P(62) line in the strong 17-1 band of ¹²⁷I₂ are readily observed in saturated absorption and used for stabilization.

© 1979 Optical Society of America

Hyperfine structure and absolute frequency of ¹²⁷I₂ transitions at 514 nm for wavelength standards at 1542 nm

Kohei Ikeda, Takumi Kobayashi, Mayuko Yoshiki, Daisuke Akamatsu, and Feng-Lei Hong
J. Opt. Soc. Am. B 39(8) 2264-2271 (2022)

Helium–neon laser stabilized by saturated absorption in iodine at 612 nm

Pierre Cérez and Seton J. Bennett
Appl. Opt. 18(7) 1079-1083 (1979)

Wavelength standard at 543 nm and the corresponding ¹²⁷I₂ hyperfine transitions

Wang-Yau Cheng and Jow-Tsong Shy
J. Opt. Soc. Am. B 18(3) 363-369 (2001)

Absolute frequency and hyperfine structure of ¹²⁷I₂ transitions at 531.5 nm by precision spectroscopy using a narrow-linewidth diode laser

Haruki Sakagami, Kazumichi Yoshii, Takumi Kobayashi, and Feng-Lei Hong
J. Opt. Soc. Am. B 37(4) 1027-1034 (2020)

Laser heterodyne spectroscopy of ¹²⁷I₂ hyperfine structure near 532 nm

Ady Arie and Robert L. Byer
J. Opt. Soc. Am. B 10(11) 1990-1997 (1993)