This document provides a detailed compilation of physical and optical properties of Rubidium-85 ( $ {}^{85}Rb $ ), focusing on its relevance to quantum optics experiments. It includes parameters for the mechanical effects of light on $ {}^{85}Rb $ atoms, along with calculated values and references to their theoretical foundations. The document presents data on the D-line transitions of $ {}^{85}Rb $, specifically the $ D_1 $ and $ D_2 $ lines, which are crucial for various quantum and atom optics experiments. The $ D_2 $ transition is more relevant due to its use in cooling and trapping $ {}^{85}Rb $ atoms. The frequencies of these transitions are derived from measurements and isotope shifts, and the corresponding vacuum wavelengths and wave numbers are calculated. The document also discusses the refractive index of air, which is essential for determining the actual wavelength of light in the presence of air. The document covers the hyperfine structure of $ {}^{85}Rb $, including energy level splittings and the Hamiltonian that describes the hyperfine structure. It discusses the interaction of $ {}^{85}Rb $ with static external magnetic and electric fields, detailing the Zeeman and Stark effects. The paper also addresses the reduction of the dipole operator, which is crucial for calculating the interaction strength between $ {}^{85}Rb $ and nearly-resonant optical radiation. The document provides detailed information on resonance fluorescence, including the symmetries of the dipole operator and the calculation of photon scattering rates. It discusses the behavior of two-level atoms in resonance fluorescence, the effects of optical pumping, and the scattering cross sections for different polarizations of light. The paper also covers the effects of circularly and linearly polarized light on the population distribution of $ {}^{85}Rb $ atoms, and the scattering rates in one- and three-dimensional optical molasses. The document is a comprehensive resource for researchers working with $ {}^{85}Rb $ in quantum optics experiments, providing both experimental data and theoretical calculations.This document provides a detailed compilation of physical and optical properties of Rubidium-85 ( $ {}^{85}Rb $ ), focusing on its relevance to quantum optics experiments. It includes parameters for the mechanical effects of light on $ {}^{85}Rb $ atoms, along with calculated values and references to their theoretical foundations. The document presents data on the D-line transitions of $ {}^{85}Rb $, specifically the $ D_1 $ and $ D_2 $ lines, which are crucial for various quantum and atom optics experiments. The $ D_2 $ transition is more relevant due to its use in cooling and trapping $ {}^{85}Rb $ atoms. The frequencies of these transitions are derived from measurements and isotope shifts, and the corresponding vacuum wavelengths and wave numbers are calculated. The document also discusses the refractive index of air, which is essential for determining the actual wavelength of light in the presence of air. The document covers the hyperfine structure of $ {}^{85}Rb $, including energy level splittings and the Hamiltonian that describes the hyperfine structure. It discusses the interaction of $ {}^{85}Rb $ with static external magnetic and electric fields, detailing the Zeeman and Stark effects. The paper also addresses the reduction of the dipole operator, which is crucial for calculating the interaction strength between $ {}^{85}Rb $ and nearly-resonant optical radiation. The document provides detailed information on resonance fluorescence, including the symmetries of the dipole operator and the calculation of photon scattering rates. It discusses the behavior of two-level atoms in resonance fluorescence, the effects of optical pumping, and the scattering cross sections for different polarizations of light. The paper also covers the effects of circularly and linearly polarized light on the population distribution of $ {}^{85}Rb $ atoms, and the scattering rates in one- and three-dimensional optical molasses. The document is a comprehensive resource for researchers working with $ {}^{85}Rb $ in quantum optics experiments, providing both experimental data and theoretical calculations.