Ophir

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Mission Impossible? Measuring Signals Below the Noise Floor with a Lock-In Amplifier

Measuring optical signals in the femtowatt (10-15) to nanowatt (10-9) range can be a daunting task. In order to achieve significant improvements in noise rejection we need to turn to a lock-in amplifier, which can improve noise rejection by 3 orders of magnitude or more.

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FluxGage - A Photometric Test System for LED Luminaires Based on Solar Panels

We present a novel photometric test system for LED luminaires. The new photometric system called 'FluxGage' uses solar panels to detect and measure light. By placing a diffuser and a black pinhole array over a solar panel we achieve a detection surface that is also an absorber. This enables the system to be the same size as the DUT (Device Under Test), as opposed to an integrating sphere, which is at least 3 times larger than the DUT. Simulations and experimental results show that this system can measure total flux with an uncertainty of 4.3%.

Ophir

BeamWatch is the only non-contact beam monitoring system for high power YAG, fibre, and diode lasers used in industrial material processing applications

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

Modern 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.

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Ophir Pyro OEM Sensors – What options are available?

Pyroelectric sensors have been used widely in the laser industry for many years to measure energy. They allow measurement of individual pulse energy or pulse-to-pulse variation for rapidly pulsing lasers, something that cannot be done with photodiode or thermal sensors. They also are not limited to visible or near-IR wavelengths like photodiodes, allowing measurements into the deep IR and THz regions. Ophir has recently introduced a new series of Pyroelectric OEM sensors based on the “PE-C” line of standard Pyroelectric sensors, which were introduced in 2011. This document presents the various options available to customers, lists the advantages of the new series over existing products, and mentions the capabilities of the new line.

PRESS RELEASE

BeamTrack 3A-QUAD

Ophir Photonics has announced its BeamTrack 3A-QUAD, a high sensitivity thermal detector that combines multiple functions, power, energy and position in a single, compact sensor

PRESS RELEASE

Starlab 2.20

Ophir Photonics Group has announced the latest version of its StarLab measurement software, version 2.20, which supports Beamtrack sensors that can measure power, energy, beam position and beam size