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What are Spatial Coherence and Temporal Coherence?

Global Optics

Editorial Team - GoPhotonics

Aug 31, 2023

Coherence is the measure of the relation between phases observed at distinct points on a wave, including both temporal and spatial dimensions. It represents a phenomenon wherein two wave sources are c...read more

What is Light Diffusion?

Global Optics

Editorial Team - GoPhotonics

Aug 8, 2023

Light diffusion is the scattering and spreading of light in various directions when it encounters an uneven or rough surface or passes through a translucent medium. Light scattering occurs through ref...read more

What are Evanescent Waves?

Global

Editorial Team - GoPhotonics

Jun 12, 2023

Evanescent waves are electromagnetic waves that exist only within a very short distance from a boundary or interface between two materials with different refractive indices. They are also called near-...read more

What is the Electromagnetic (EM) Spectrum?

Global

Editorial Team - GoPhotonics

Mar 6, 2023

The electromagnetic spectrum is defined as the distribution of a number of electromagnetic waves as a function of wavelength, frequency, or wave number. The EM wave exhibits both wave-like and particl...read more

What is Fraunhofer and Fresnel Diffraction?

Imaging Optics

Editorial Team - GoPhotonics

Aug 23, 2023

Diffraction of light refers to the phenomenon where light waves bend or spread out as they encounter the edge of a material or pass through a slit opening. Light behaves like a quantized wave in the e...read more

What is Birefringence?

Optics

Editorial Team - GoPhotonics

Mar 3, 2023

Birefringence, also known as double refraction, is a phenomenon that occurs when light passes through certain materials and is split into two rays, each with a different index of refraction. This effe...read more

What is a Monochromatic Light?

Global Optics

Editorial Team - GoPhotonics

Aug 14, 2023

Monochromatic light is defined as light consisting of only one wavelength. It is also known as single-wavelength light, which derived its name from "mono" meaning single, and "chroma&qu...read more

What is an Erbium-Doped Fiber Amplifier (EDFA)?

Fiber Optics

Editorial Team - GoPhotonics

Mar 9, 2023

An Erbium-Doped Fiber Amplifier (EDFA) is a device that amplifies weak input optical signals without converting them into electrical signals. An optical amplifier is a device that amplifies the intens...read more

What is Dispersion in Optical Fibers?

Fiber Optics Optics

Editorial Team - GoPhotonics

May 25, 2023

An optical signal is an electromagnetic signal that consists of different wavelengths. Each wavelength components travels through the fiber at different speeds depending on the refractive index of the...read more

What is a Wave Vector?

Global Optics

Editorial Team - GoPhotonics

Jul 28, 2023

The wave vector (denoted by the symbol k) is a mathematical vector that represents the spatial and directional properties of a wave. It provides essential information about the wave's propagation ...read more

What is Homogeneous and Inhomogeneous Broadening?

Optics

Editorial Team - GoPhotonics

Aug 23, 2023

Spectral broadening is the spreading out of frequencies in light or signals from a narrower range to a wider range. This leads to the transformation of sharp, discrete spectral lines corresponding to ...read more

What is Dichroism?

Optics

Editorial Team - GoPhotonics

Apr 24, 2023

Dichroism is an optical property of certain materials to selectively absorb light of different polarizations. This means that the material will appear to have different colors when viewed through pola...read more

What are Phase Velocity and Group Velocity?

Global Optics

Editorial Team - GoPhotonics

Jul 4, 2023

Wave Packet is a group of waves that collectively exhibits a well-defined waveform and a finite spatial extent. The speed at which a wave packet moves is referred to as the group velocity. It represen...read more

What is the Difference Between Uniaxial and Biaxial Crystals?

Optics

Editorial Team - GoPhotonics

May 18, 2023

Difference Between Uniaxial and Biaxial CrystalsUniaxial and biaxial crystals are two types of anisotropic materials that exhibit different optical properties and behaviors due to their crystal struct...read more

What are Coherence Length and Coherence Time?

Global Optics

Editorial Team - GoPhotonics

Aug 31, 2023

Coherence Length and Coherence Time are concepts often encountered in physics, particularly in the study of waves and quantum mechanics. They both refer to the temporal and spatial properties of wavef...read more

Technical Articles

Questions & Answers on Optics

Selected Tag :

What are Spatial Coherence and Temporal Coherence?

What is Light Diffusion?

What are Evanescent Waves?

What is the Electromagnetic (EM) Spectrum?

What is Fraunhofer and Fresnel Diffraction?

What is Birefringence?

What is a Monochromatic Light?

What is an Erbium-Doped Fiber Amplifier (EDFA)?

What is Dispersion in Optical Fibers?

What is a Wave Vector?

What is Homogeneous and Inhomogeneous Broadening?

What is Dichroism?

What are Phase Velocity and Group Velocity?

What is the Difference Between Uniaxial and Biaxial Crystals?

What are Coherence Length and Coherence Time?

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