Cavity-Enhanced Spectroscopy and Sensing

The book reviews the dramatic recent advances in the use of optical resonators for high sensitivity and high resolution molecular spectroscopy as well as for chemical, mechanical and physical sensing. It encompasses a variety of cavities including those made of two or more mirrors, optical fiber loops, fiber gratings and spherical cavities. The book focuses on novel techniques and their applications. Each chapter is written by an expert and/or pioneer in the field. These experts also provide the theoretical background in optics and molecular physics where needed. Examples of recent breakthroughs include the use of frequency combs (Nobel prize 2005) for cavity enhanced sensing and spectroscopy, the use of novel cavity materials and geometries, the development of optical heterodyne detection techniques combined to active frequency-locking schemes. These methods allow the use and interrogation of optical resonators with a variety of coherent light sources for trace gas detection and sensing of strain, temperature and pressure.

Contenu

From the Contents: Cavity-Enhanced Spectroscopy and Sensing.- Introduction to Cavity-Enhanced Absorption Spectroscopy.- Detection and Characterization of Reactive Chemical Intermediates Using Cavity Ringdown Spectroscopy.- Quantum Cascade Laser Based Chemical Sensing Using Optically Resonant Cavities.- Saturated-Absorption Cavity Ringdown (SCAR) for High-Sensitivity and High-Resolution Molecular Spectroscopy in the Mid-IR.- Cavity-Enhanced Absorption Spectroscopy with Optical Feedback.- NICE-OHMS - Frequency Modulation Cavity-Enhanced Spectroscopy - Principles and Performance.- Applications of NICE-OHMS to Molecular Spectroscopy.- Cavity-Enhanced Direct Frequency Comb Spectroscopy.- Whispering Gallery Mode Biomolecular Sensors.- Cavity-Enhanced Spectroscopy on Silica Microsphere Resonators.- Cavity-Ringdown Spectroscopy for the Analysis of Small Liquid Volumes.- Fiber Loop Ringdown Sensors and Sensing.- Fiber-Optic Resonators for Strain-Acoustic Sensing and Chemical Spectroscopy.- Broadband Cavity-Enhanced Absorption Spectroscopy with Incoherent Light.