Source: Wikipedia Understanding Collimated Beams in Photonics Understanding Collimated Beams in Photonics In the field of photonics, the concept of a collimated beam is crucial for numerous applications and experiments. A collimated beam, often a laser beam, is characterized by its ability to propagate through a medium, such as air, with minimal divergence. This property […]
Source: PSI – KIT Understanding Michelson Interferometers A Michelson interferometer, invented by Albert Abraham Michelson in the late 19th century, is a commonly used device for measuring distances and in various other applications. Interferometer Setup and Operation Principle A Michelson interferometer typically uses a laser as a light source, although other light sources can also
Michelson Interferometers Read More »
Source: Wikipedia The Fascinating World of Speckle Patterns Speckle patterns are random granular patterns that occur when a coherent light beam, such as from a laser, is diffusely reflected on a surface with a rough structure. These patterns result from the interference of various reflected portions of the incident beam with random optical phases. Understanding
Source: Nature Fourier Transform Spectroscopy Understanding Fourier Transform Spectroscopy Operation Principle Fourier transform spectroscopy is a method used in various spectroscopic techniques, especially in infrared spectroscopy. It involves computing an optical spectrum from raw data by applying a Fourier transform algorithm. The method is based on measuring the interference signal in the time domain using
Fourier Transform Spectroscopy Read More »
Source: link.springer.com Understanding Thermal Lensing in Laser Systems Introduction to Thermal Lensing Thermal lensing is a phenomenon that occurs in high-power lasers due to the inhomogeneous heating of the gain medium, such as a laser crystal. This heating leads to a thermal lens effect, causing changes in the refractive index of the medium, which can
Source: Wasatch Photonics Understanding Transmission Gratings Introduction Transmission gratings are a type of diffraction gratings that are utilized in transmission, unlike reflection gratings which reflect incident light. They can be categorized as volume Bragg gratings or surface relief gratings, with the latter having a diffractive structure near one of their surfaces. Operation Principle Transmission gratings
Transmission Gratings Read More »
Source: AZoOptics Zone Plates: An Overview Zone Plates: An Overview Introduction Zone plates are optical devices used for focusing light through diffraction. Unlike traditional lenses that rely on refraction, zone plates operate based on diffraction principles. They are typically flat and have a radially varying transmissivity. Types of Zone Plates There are two main types
Source: Wikipedia Understanding Kerr Lens Effect in Optics When a short optical pulse travels through a nonlinear medium, it experiences the Kerr effect, causing an optical phase delay. This effect is most significant at the beam axis where the optical intensity is highest. The Kerr effect acts like a lens, deforming wavefronts and focusing the
Source: Edmund Optics Understanding Retardance in Optics Understanding Retardance in Optics What is Retardance? Retardance refers to the difference in optical phase shifts experienced by different polarization components of a light beam propagating through a birefringent medium. It is measured in radians (rad) or degrees (°), or in terms of wavelengths. Applications of Retardance in
Understanding Retardance Read More »
Source: Wikipedia Gaussian Beams in Optics and Laser Physics Gaussian Beams: Understanding Their Characteristics Intensity Profile of Gaussian Beams Gaussian beams in optics are characterized by their intensity profile, which can be described using a Gaussian function. The beam radius is the distance from the beam axis where the intensity drops to a certain percentage
