Light Collection and Systems Throughput


This discussion is restricted to the general use of Incoherent Light Sources, such as arc lamp or quartz tungsten halogen sources. Diffraction and coherent effects are excluded. The emphasis throughout this section will be on the collection of light.

Diffraction Grating Physics


A typical diffraction grating consists of a substrate with a large number of parallel grooves ruled or replicated in its surface and overcoated with a reflecting material such as aluminum. The quality and spacing of the grooves are crucial to the per...

Incoherent Light Source Guide

Selection Guides

Newport's Oriel® Instruments light source offerings are varied and significant. With so many options, it can be difficult to choose the best system for your application. For light source technical information and a summary of the major advantages of ...

Introduction to FTIR Spectroscopy

Technical Notes

An FT-IR Spectrometer is an instrument which acquires broadband NIR to FIR spectra. Unlike a dispersive instrument, i.e. grating monochromator or spectrograph, FT-IR Spectrometers collect all wavelengths simultaneously. This feature is called the Mul...

Getting Light into a Monochromator


In this section we give a brief introduction to getting light into a monochromator, and how much you can expect to get out. While the emphasis is on coupling Oriel Light Sources to Oriel Monochromators, the same general principles apply to collecting...

Introduction to Solar Radiation


Radiation from the sun sustains life on earth and determines climate. The energy flow within the sun results in a surface temperature of around 5800 K, so the spectrum of the radiation from the sun is similar to that of a 5800 K blackbody with fine s...

Calculating Output Power


You can estimate the power in the collimated beams* at any wavelength or in any wavelength range from our Series Q, Apex, or Research Lamp Housings with any of our CW and pulsed arc, quartz tungsten halogen or deuterium lamps.

Resolution of Monochromators and Spectrographs


Gratings are available in various groove densities (i.e. lines/mm). Higher groove densities give higher reciprocal dispersion and therefore higher resolution. The grating dispersion is similar for gratings with the same groove density. The exact disp...

Simulation of Solar Irradiation

Technical Notes

Oriel® Solar Simulators provide the closest spectral match to solar spectra available from any artificial source. The match is not exact, but better than needed for many applications. For the closest match possible, choose a Oriel Sol3A Class AAA Sol...

Oriel Instruments


Oriel products and solutions represent leading instruments, such as light sources covering a broad range from UV to IR, pulsed or continuous, and low to high power.
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