Photon-trap spectroscopy applied to molecules adsorbed on a solid surface: probing with a standing wave versus a propagating wave

被引：13

作者：

Egashira, Kazuhiro

Terasaki, Akira ^{[1
]}

Kondow, Tamotsu ^{[1
]}

机构：

[1] Genesis Res Inst Inc, E Tokyo Lab, Toyota Technol Inst, Cluster Res Lab, Chiba 2720001, Japan

来源：

APPLIED OPTICS | 2010年 / 49卷 / 07期

关键词：

RING-DOWN SPECTROSCOPY; NORMAL-ALKYL CHAINS; H STRETCHING MODES; CAVITY RING; THIN-FILMS; ALKYLSILOXANE MONOLAYERS; ABSORPTION; TEMPERATURE; ADSORPTION; DEPOSITION;

D O I：

10.1364/AO.49.001151

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We apply photon-trap spectroscopy, a generalized scheme of cavity ringdown spectroscopy, to infrared spectroscopy of molecular adsorbates on a solid substrate. The storage lifetime of light in a high-finesse Fabry-Perot cavity provides a high absorbance sensitivity for the substrate sample, which is placed exactly normal to the light beam in the cavity to minimize optical losses. Infrared spectra of the C-H stretching vibration of alkylsiloxane monolayer films on a silicon substrate are measured in three ways, namely by employing pulsed and continuous-wave lasers as well as by conventional Fourier transform infrared spectroscopy. The magnitude of optical absorption is shown to vary by the character of the interacting light used in the measurement, i.e., a standing wave versus a propagating wave. (C) 2010 Optical Society of America

引用

页码：1151 / 1157

页数：7