Author: Efi Rotem

Using Pulsed Lasers For Quality Evaluation Of Periodically Poled Nonlinear Crystals

Nonlinear optical crystals – you might have one in your pocket Nonlinear optical crystals have the unique property of changing the frequency of light passing through them. They are more common than you think, actually, you might have one in your pocket (if you have a green laser pointer). Inside the green laser pointer there…

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Laser Applications in EV Car Batteries

Electrical cars are all around us. The power source of an electrical car is its Li-ion battery pack. One of the most important parameters for a battery pack is its charge capacity per weight in kWh/kg.  This means that battery and car makers want to put in as many ‘battery cells’ (the basic Li-ion unit…

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Surface Micro Structuring Using Ultrashort Laser Pulses

Surface micro structuring using ultra short pulse lasers is a unique technology with many applications such as thin film ablation, creating antireflective and optically absorptive surfaces, super hydrophobic or hydrophilic surfaces with anti-bacterial properties, and surface texturing for improved bonding strength. In the semiconductor and display industry, USP lasers perform very well-defined jobs such as…

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Laser Applications in OLED and microLED Display Manufacturing

Displays are all around us, from large TV screens to tiny displays inside AR/VR gear just in front of our eyes. Display technology has come a long way from the days of the bulky cathode ray tubes to transparent and flexible OLED displays utilizing light emitting organic molecules! As new technologies take their place on…

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Zeroing and Offset in Thermopile Power Sensors

A Thermopile power sensors may give a reading even when there is no laser radiation pointed at them. Here’s how you can deal with it…

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Measuring irradiance of non-collimated light

In some applications laser or LED light is illuminating a certain area. In those applications it may be more practical to measure the irradiance or power density in [W/cm2] rather than to measure the power in [W]. So why not simply take a PD300 sensor, measure the power and divide by its area which is…

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White Paper: Measuring LED Power with Thermal Sensors

LED’s are used today in many applications with the most prominent being the lighting of our homes, streets and businesses. Despite their clear advantages, measurement techniques of the power, flux and spectrum of LEDs is not very different from that of traditional types of lamps.

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