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What is a Laser Interferometer?

Interferometers

Editorial Team - GoPhotonics

Feb 4, 2023

A Laser Interferometer is one of the interferometers that employs laser technology and electronic controls to calibrate slip gauges as well as inspect machine parts for straightness, parallelism, and ...read more

What are White Light Interferometers?

Interferometers

Editorial Team - GoPhotonics

Jan 17, 2023

White Light Interferometers are devices that use interference effects between light beams. The interference occurs when the light reflected from a sample is superimposed with the light reflected ...read more

What is a Fizeau Interferometer?

Interferometers

Editorial Team - GoPhotonics

Jul 13, 2023

The Fizeau Interferometer is a two beam interferometer that employs a reference beam and a test beam to measure the surface flatness. It was invented by Armand Fizeau, a French physicist, in the 19th ...read more

What is an Optical Vortex?

Optical Components

Editorial Team - GoPhotonics

Dec 15, 2023

An optical vortex, or a phase singularity, is a unique point within an optical field where light intensity reaches zero due to the twisting of light waves, resembling a corkscrew pattern. It is one ty...read more

What is a Twyman-Green Interferometer?

Interferometers

Editorial Team - GoPhotonics

Feb 6, 2023

Twyman-Green Interferometers are interferometers used to test optical components. It was invented by Frank Twyman and Arthur Green in 1916. It is used to measure the surface shape and transmitted wave...read more

What is a Delay Line Interferometer (DLI)?

Interferometers

Editorial Team - GoPhotonics

Jul 17, 2023

A Delay Line Interferometer is an optical device that incorporates a delay line in one of its arms to introduce a controlled path length difference between the interfering beams. By adjusting the dela...read more

What is Slit Width in a Monochromator?

Global Optics

Editorial Team - GoPhotonics

Aug 10, 2023

Slit width of a monochromator is the width of the entrance and exit slits. The slits are rectangular apertures through with light enters into and exits from the monochromator. Their purpose is to cont...read more

What are Common Path Interferometers?

Interferometers

Editorial Team - GoPhotonics

Feb 3, 2023

A Common Path Interferometer is a type of interferometer in which the sample beam and reference beam uses a common optical path to interfere. In some interferometers like a Michelson interfe...read more

What is Linear Dispersion in a Monochromator?

Optical Components

Editorial Team - GoPhotonics

Aug 21, 2023

Monochromators work based on the principle of wavelength selection through the process of dispersion. It is an optical device used to isolate a narrow range of wavelengths from a broader spectrum of l...read more

What is Sweep Time in an Optical Spectrum Analyzer (OSA)?

Optical Components

Editorial Team - GoPhotonics

Aug 21, 2023

Optical spectrum analyzers (OSA) are devices used to analyze the power distribution of an optical signal across different wavelengths. The sweep time of an OSA refers to the time it takes to perform a...read more

What is a Multiple Axis Interferometer?

Interferometers

Editorial Team - GoPhotonics

Feb 6, 2023

A Multiple Axis Interferometer is a type of interferometer that uses multiple beams of light to perform measurements. These interferometers measure two and three axes that can increase accuracy, reduc...read more

What is Span of an Optical Spectrum Analyzer (OSA)?

Optical Components

Editorial Team - GoPhotonics

Aug 21, 2023

The Span of an Optical Spectrum Analyzer (OSA) refers to the range of wavelengths or frequencies over which the instrument can analyze the optical spectrum of a signal. It determines the width of the ...read more

What is Stray Light in a Spectrometer?

Imaging Spectrometers

Editorial Team - GoPhotonics

Aug 21, 2023

Stray light in a spectrometer refers to unwanted light that reaches the detector and affects the accuracy and precision of the spectroscopic measurements. It is expressed in percentage (%). When light...read more

What is Wavelength Step Size in a Monochromator?

Optical Components

Editorial Team - GoPhotonics

Aug 21, 2023

The wavelength step size of a monochromator refers to the incremental change in wavelength up to which the monochromator can be adjusted or tuned. It is an important parameter that determines how fine...read more

What is Slit Resolution in a Monochromator?

Optical Components

Editorial Team - GoPhotonics

Aug 21, 2023

The slit resolution of a monochromator refers to the ability of the monochromator to resolve or distinguish between different wavelengths of light. It is determined by the width of the entrance and ex...read more

Technical Articles

Questions & Answers on Test & Measurement

Selected Tag :

What is a Laser Interferometer?

What are White Light Interferometers?

What is a Fizeau Interferometer?

What is an Optical Vortex?

What is a Twyman-Green Interferometer?

What is a Delay Line Interferometer (DLI)?

What is Slit Width in a Monochromator?

What are Common Path Interferometers?

What is Linear Dispersion in a Monochromator?

What is Sweep Time in an Optical Spectrum Analyzer (OSA)?

What is a Multiple Axis Interferometer?

What is Span of an Optical Spectrum Analyzer (OSA)?

What is Stray Light in a Spectrometer?

What is Wavelength Step Size in a Monochromator?

What is Slit Resolution in a Monochromator?

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