Book contents
- Frontmatter
- Dedication
- Contents
- Preface
- 1 Introduction
- 2 Atomic Structure and the Quantum Mechanics of Angular Momentum
- 3 Structure of Diatomic Molecules
- 4 Quantum Mechanical Analysis of the Interaction of Laser Radiation with Electric Dipole Resonances
- 5 Quantum Mechanical Analysis of Single-Photon Electric Dipole Resonances for Diatomic Molecules
- 6 Absorption and Emission Spectroscopy
- 7 Raman Spectroscopy
- 8 Coherent Anti-Stokes Raman Scattering (CARS) Spectroscopy
- Spherical Harmonics and Radial Wavefunctions for One-Electron Atoms
- Clebsch–Gordan Coefficients, Dipole Moments, and Spontaneous Emission Coefficients for the 2p–1s Transition in Atomic Hydrogen
- Properties and Values for Selected 3j Symbols
- Properties and Values for Selected 6j Symbols (Weissbluth, 1978)
- Allowed LS Coupling Terms for Equivalent d2 Electrons
- Derivation of the Higher-Order Density Matrix Elements for Doublet and Triplet Electronic Levels
- Einstein Coefficients for Spontaneous Emission for the X2Π–A2Σ+ (0,0) Bands of OH and NO and the X3Σ−–A3Π (0,0) Band of NH
- Effect of Hyperfine Splitting on Radiative Transition Rates
- Voigt Function Values
- References
- Index
6 - Absorption and Emission Spectroscopy
Published online by Cambridge University Press: 12 December 2024
Book contents
- Frontmatter
- Dedication
- Contents
- Preface
- 1 Introduction
- 2 Atomic Structure and the Quantum Mechanics of Angular Momentum
- 3 Structure of Diatomic Molecules
- 4 Quantum Mechanical Analysis of the Interaction of Laser Radiation with Electric Dipole Resonances
- 5 Quantum Mechanical Analysis of Single-Photon Electric Dipole Resonances for Diatomic Molecules
- 6 Absorption and Emission Spectroscopy
- 7 Raman Spectroscopy
- 8 Coherent Anti-Stokes Raman Scattering (CARS) Spectroscopy
- Spherical Harmonics and Radial Wavefunctions for One-Electron Atoms
- Clebsch–Gordan Coefficients, Dipole Moments, and Spontaneous Emission Coefficients for the 2p–1s Transition in Atomic Hydrogen
- Properties and Values for Selected 3j Symbols
- Properties and Values for Selected 6j Symbols (Weissbluth, 1978)
- Allowed LS Coupling Terms for Equivalent d2 Electrons
- Derivation of the Higher-Order Density Matrix Elements for Doublet and Triplet Electronic Levels
- Einstein Coefficients for Spontaneous Emission for the X2Π–A2Σ+ (0,0) Bands of OH and NO and the X3Σ−–A3Π (0,0) Band of NH
- Effect of Hyperfine Splitting on Radiative Transition Rates
- Voigt Function Values
- References
- Index
Summary
Laser absorption spectroscopy is widely used for sensitive and quantitative detection of trace species. In this chapter, the density-matrix approach is used to introduce laser absorption spectroscopy. Spectroscopic quantities that characterize the absorption process are defined, and the relationships among these quantities are discussed. Broadening processes for spectral line shapes are also discussed, and the Doppler, Voigt, and Galatry profiles are introduced. The chapter concludes with a detailed example calculation featuring NO absorption.
- Type
- Chapter
- Information
- Publisher: Cambridge University PressPrint publication year: 2024