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Ulbricht Sphere - Definition and Applications

Ulbricht sphere, also known as an integrating sphere, is an optical device used for measuring the reflectivity/transmittivity of optical components and optical flux from an LED or bulb and a laser diode.

12 May 2014

Total Internal Reflection - Working Principle and Applications

Total internal reflection is the reflection of the incident light that hits a medium boundary at an angle greater than the critical angle relative to the normal to the surface.

12 May 2014

Pound-Drever Hall Technique for Laser Frequency Stabilization

The Pound-Drever Hall (PDH) method is a known and sophisticated method for frequency stabilization of lasers, for instance diode lasers, to a reference optical cavity, for instance Fabry-Perot cavity, in a ‘laser lock.’ In doing so, the laser linewidth is also considerably shortened.

From Qubig GmbH 12 May 2014

Photoelectric Effect - Definition and Applications

Photoelectric effect is a result of emission of electrons when a matter is exposed to electromagnetic radiations such as photons of light.

6 May 2014

Optical Coherence - Definition and Applications

Optical coherence is associated with interference effects of light. A field of light is said to be coherent when the electric field values at different locations are in a fixed phase.

6 May 2014

Pellin-Broca Prism - Definition and Uses

A Pellin–Broca prism is a type of constant-deviation dispersive prism. It is named after its inventors, Ph. Pellin, a French instrument maker and André Broca, a professor of physiological optics.

6 May 2014

Refractometer - Definition and Applications

A refractometer is an optical device used for measuring the extent to which light is bent or refracted when it moves through a substance.

6 May 2014

Gaussian Beam - Definition and Parameters

A Gaussian beam is a beam of electromagnetic radiation with intensity distributions and transverse electric field represented by Gaussian functions.

6 May 2014

Michelson Interferometer - Definition and Applications

Michelson interferometer is a tool to produce interference between two beams of light. It is the most common design for optical interferometry and was invented by Albert Abraham Michelson.

6 May 2014

Fluorescence - Definition and Applications

Fluorescence is the emission of light by an atom or molecule following absorption of light or other radiation by the molecule. The emitted light arises due to the transition of the excited electrons from the first singlet level to ground level.

6 May 2014