White Papers

Discrete Mode Laser Diodes with Very Narrow Linewidth Emission

By B. Kelly1, R. Phelan1, D. Jones1, C. Herbert1, et al.
26 March 2015

White Paper Lead ImageEx-facet, free-running low linewidth (~100 kHz), single mode laser emission is demonstrated using low cost, regrowth-free ridge waveguide Discrete Mode Fabry Pérot laser diode chips. These narrow linewidths are observed even at emission powers as low as 500 μW

Emissive Color Measurement: Measuring Chromaticity and Color Temperature of White LEDs

By Miriam Mowat, Applications Scientist
20 March 2015

White Paper Lead ImageIn this application note, Ocean Optics compares emissive color measurements of a NIST (National Institute of Standards and Technology) calibrated white LED from two of the company's spectrometers: the compact STS microspectrometer and the new Flame spectrometer.

Measuring LED Power and Irradiance with Calibrated Photodiodes

By Dr. Efi Rotem
17 March 2015

White Paper Lead ImageIn many industries, LEDs are replacing traditional broadband light sources, such as mercury, deuterium, Xenon and quartz-halogen lamps. Systems and applications transitioning to LEDs are reengineered in terms of optics, electronics, heat management, and more. Similarly, the equipment used by professionals to measure the output of these sources needs to be fitted for measuring LEDs.

Selecting the best prisms for your needs

By Edmund Optics
24 February 2015

White Paper Lead ImagePrisms as key optical elements for various applications

Miniature Spectrometers for Narrowband Laser Characterization

By Ocean Optics
9 February 2015

White Paper Lead ImageWhether measuring center wavelength, spectral shape or power, compact spectrometers are a convenient, low-cost tool for the characterization and monitoring of many types of laser sources. This whitepaper explores in full the benefits of miniature spectrometers.

High LIDT optical components for ultrafast applications - what are the specific points

By Manx Precision Optics Ltd.,
30 January 2015

White Paper Lead ImageUltrafast lasers have seen much development and are now used in a wide range of applications ranging from extremely high power experiments to medical and engineering applications. With the increase in the use of these lasers the demand for suitable optical components and the required specifications has increased.

Spirit Sampling for Counterfeit Detection and Brand Authentication

By Nick Barnett. Ph.D
7 November 2014

White Paper Lead ImageIncidents of whisky and spirits counterfeiting pose serious health risks to citizens and potential revenue loss to brand owners. The Ocean Optics Spirit Sampler can help to combat increased sales of illicit spirits by providing a means of counterfeit detection and brand authentication in the field. The success of such a screening device depends on the reproducibility of measurements from sample to sample and from device to device. This application note describes measurements performed to demonstrate Spirit Sampler device reproducibility and outlines some of the instrument’s brand management software features.

How is laser Power/Energy measurement affected by incidence angle?

By Mark Slutzki
29 October 2014

White Paper Lead ImageModern laser applications demand ever-increasing accuracy in the measurement and control of the laser beam. Various types of sensors and instruments are in use today, the choice depending on the type of measurement needed. However, even given the correct choice of equipment, there are measurement conditions that can seriously affect the accuracy of the readings obtained if not correctly taken into account.