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An Introduction Doppler Cooling

Doppler cooling is the laser based cooling of small particles, such as ions and atoms, which are trapped during the cooling process. It also involves the spontaneous emission of photons, which generate velocity-dependent light forces through the Doppler effect.

15 May 2014

Optical Dispersion - Principle and Applications

Dispersion is the process of describing the characteristics of light waves and their interaction with a medium so that the group and phase velocities of the light propagating the medium depend on the optical frequency.

15 May 2014

Giles Parameters - Definition and Equation

Giles parameters are used to design fiber amplifiers that are made of rare-earth-doped fibers.

15 May 2014

B-Integral - Definition and Significance

B-Integral is defined as the measure of the non-linear phase shift of light in devices like amplifiers. B-Integral is a term that is specific to non-linear optics. The non-linear shift of the laser system along the optical axis is equal to the B-Integral of the laser beam.

15 May 2014

Free-Electron Laser - Definition and Applications

A free-electron laser is a kind of laser that employs a beam of high-speed, relativistic electrons moving freely with an optical field via a magnetic structure.

15 May 2014

Harmonic Mode-Locking - Definition

Harmonic mode-locking is a method of achieving high pulse repetition rates in an actively mode-locked laser. This method is carried out in the laser resonator with a constant temporal spacing where multiple ultra-short pulses are circulated.

15 May 2014

Electroluminescence - Definition and Applications

Electroluminescence is the characteristic of a material to emit light when an electric current is passed through it, or when subjected to a strong electric field.

15 May 2014

Symmetry-Forbidden Transitions - Explanation and Principle

Symmetry forbidden transition is a term commonly used in the context of electronic spectroscopy. This term refers to the electronic transitions that occur from one quantum to another.

15 May 2014

Gouy Phase-Shift - Explanation and Principle

The Gouy phase shift is a popular axial phase shift that occurs in a converging light wave when it passes through its focus in propagating from -‡ to +‡ . The Gouy phase shift is an additional phase shift that occurs in the propagation of a Gaussian Beam.

15 May 2014

Gordon-Haus Jitter - Description and Principle

The Gordon-Haus jitter is a timing jitter that originates from the fluctuations in center frequency. This jitter has been greatly influencing long haul fiber soliton systems by causing a jitter in the output of fiber links.

15 May 2014