Spectrometers and Interferometers

This lecture covers the measurement of wavelength using spectrometers and interferometers. It starts with an overview of spectrometers, including components like entrance and exit slits, collecting optics, and detectors. The lecture then delves into examples of spectrometers such as prism and grating spectrometers. It explains the concept of resolution and resolving power in spectrometers, emphasizing the importance of angular dispersion. The discussion extends to interferometers, detailing the principles of interference, diffraction, and refraction. The lecture concludes with a comparison between different spectrometers based on their spectral resolving power.