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Related Concept Videos

IR Spectrometers01:25

IR Spectrometers

There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...

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Updated: Jun 16, 2026

Implementation of a Reference Interferometer for Nanodetection
16:11

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

Radial shearing interferometers using a laser source.

M V Murty, R P Shukla

    Applied Optics
    |February 4, 2010
    PubMed
    Summary
    This summary is machine-generated.

    New radial shearing interferometer designs eliminate the need for white light compensation when using laser sources. This simplifies optical setups by removing the requirement for full white light compensation.

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    Area of Science:

    • Optics and Photonics
    • Interferometry

    Background:

    • Radial shearing interferometers traditionally require white light compensation.
    • Previous designs relied on conventional light sources, necessitating complex compensation techniques.

    Purpose of the Study:

    • To explore new radial shearing interferometer designs.
    • To leverage laser sources to simplify interferometer configurations.

    Main Methods:

    • Investigating optical arrangements for radial shearing interferometers.
    • Utilizing laser sources instead of conventional light sources.

    Main Results:

    • Demonstrated that laser sources negate the need for white light compensation.
    • Presented several novel radial shearing interferometer arrangements.

    Conclusions:

    • Laser-based radial shearing interferometers offer a simplified alternative.
    • New designs improve efficiency and reduce complexity in optical metrology.