Accession Number : ADA207594

Title :   Optical Detection and Spectroscopy of Single Molecules in a Solid.

Descriptive Note : Technical rept.,

Corporate Author : IBM ALMADEN RESEARCH CENTER SAN JOSE CA

Personal Author(s) : Moerner, W E ; Kador, L

PDF Url : ADA207594

Report Date : 23 Mar 1989

Pagination or Media Count : 19

Abstract : Using two different double modulation techniques, we have observed the optical absorption spectrum of single dopant molecules of pentacene in a p-terphenyl host crystal at liquid helium temperatures. To achieve this frequency-modulation spectroscopy was combined either with Stark or ultrasonic modulation to remove interfering background signals from residual amplitude modulation, and the number of molecules in resonance was reduced to one by operating in the wings of the inhomogeneous line. Triplet bottleneck saturation appears in the single-molecule regime. Keywords: Laser spectroscopy; Impurity absorption; Ultrasensitive detection; Single absorber effects. (MJM)

Descriptors :   *IMPURITIES, *MOLECULES, *OPTICAL DETECTION, *SPECTROSCOPY, *PHENYL RADICALS, ABSORPTION, ABSORPTION SPECTRA, AMPLITUDE MODULATION, BACKGROUND, DETECTION, HIGH SENSITIVITY, LASERS, LIQUID HELIUM, MODULATION, RESIDUALS, SIGNALS, STARK EFFECT, TEMPERATURE, ULTRASONICS, VISIBLE SPECTRA

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE