Technical Notes

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...

Optical Power Measurement


When a photon hits the photodiode material, it may generate an electron-hole pair depending on the quantum efficiency of the device. Quantum efficiency is dependent on many factors, but in general if the energy of the photon, E = hv, is greater than ...

PMManager™ Power Meter Application Software


PMManager is a powerful application software controlling and taking measurement data, compatible with models 1919-R, 843-R-USB and 841-PE-USB.

Optical Power Meter Guide

Selection Guides

Our offering ranges from a low cost, hand-held meter to the most advanced dual channel benchtop power meter available in market. Our 1936-R/2936-R series boasts state-of-the-art analog boards with a whopping 250 kHz sampling rate and femtowatt level ...

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...

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...

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.

High Speed Detectors


There are many common parameters one considers when selecting a detector for a particular application. These include pulsewidth, bandwidth, responsivity, spectral sensitivity, noise level, linearity, power handling, bias voltage, power consumption, t...
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