High-resolution laser spectroscopy of solid hydrogen

Author

Momose, T.

Author_Institution

Div. of Chem., Kyoto Univ., Japan

Volume

4

fYear

1999

fDate

Aug. 30 1999-Sept. 3 1999

Firstpage

1251

Abstract

High-resolution laser spectroscopy on condensed matter is usually considered to be beyond the reach because of the extreme broadening of both the homogeneous and inhomogeneous spectral linewidth. A marked exception to this general consensus is found in the rotation-vibration transitions in parahydrogen (p-H/sub 2/) crystals. The sharpest linewidth observed so far is 4 MHz (FWHM) of a transition of D/sub 2/ in the p-H/sub 2/ crystal. Because of the weak intermolecular interaction and a large intermolecular distance (3.783A), the rotational motion of molecules in the p-H/sub 2/ crystal is well quantized, and the rotational quantum number J remains as a good quantum number.

Keywords

optical resolving power; quantum solids; rotational states; solid hydrogen; spectral line breadth; vibrational states; 4 MHz; D/sub 2/; H/sub 2/; condensed matter; extreme broadening; good quantum number; high-resolution laser spectroscopy; homogeneous spectral linewidth; inhomogeneous spectral linewidth; large intermolecular distance; p-H/sub 2/ crystals; parahydrogen crystals; rotation-vibration transitions; rotational motion; rotational quantum number; sharpest linewidth; solid hydrogen; weak intermolecular interaction; Chemical lasers; Frequency; Hydrogen; Impurities; Laser excitation; Laser theory; Laser transitions; Photonic crystals; Solid lasers; Spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 1999. CLEO/Pacific Rim '99. The Pacific Rim Conference on

Conference_Location

Seoul, South Korea

Print_ISBN

0-7803-5661-6

Type

conf

DOI

10.1109/CLEOPR.1999.814760

Filename

814760