This project helps to reach the end goal of doing long distance measurements. Long distance measurements depends on the refractive index of air. The refractive index depends on temperature, pressure, humidity and gas mixture. The biggest uncertainty of calculating the refractive index is the temperature, …

Het KNMI is in het bezit van een Raman lidar met polarisatie ontvanger die in dit onderzoek op twee verschillende kalibratiemethoden is getest. Uit dit onderzoek moet blijken welke methode onder de gegeven omstandigheden de juiste benadering geeft voor de depolarisatie ratio. De polarisatie ontvanger …

Door de ontwikkelingen in de techniek wordt er steeds vaker elektronica verwerkt in een product. De elektronica wordt veelal losstaand ontwikkeld op een printplaat (ook wel printed circuit board of PCB genoemd). Vervolgens wordt er wordt. Producten worden als het ware “om de techniek heen” ontworpen, …

BACKGROUND: Early accurate assessment of burn depth is important to determine the optimal treatment of burns. The method most used to determine burn depth is clinical assessment, which is the least expensive, but not the most accurate.Laser Doppler imaging (LDI) is a technique with which a more accurate …

This report is written to guide the reader step by step through the process of developing a heating stage and a iron mapping device for a photoluminescence setup, used to measure the lifetime of silicon wafers in solar cells. Subject specific terms will be explained throughout the report. First, research …

A laboratory test setup is built to transfer and actively stabilize an ultrastable signal, obtained from a laser with sub-Hz linewidth, trough a 5 km long fiber link. The fiber noise is measured and compensated via a feedback loop acting on an AOM that can change the frequency (and therefore the phase) …

Resonance-enhanced laser-induced breakdown spectroscopy was used to increase the elemental sensitivity of laser-induced breakdown spectroscopy. In resonance-enhanced laser-induced breakdown spectroscopy, two lasers are used. The first laser creates a plasma, and the second laser re excites the most …

Striae zijn littekens in de subcutis. Deze komen vaak voor in de groei tijdens de puberteit, zwangerschap, overgewicht en door gebruik van steroïden. Fractionele lasers richten zich op het chromofoor water in de huid. Bij de genezing wordt collageen aangemaakt, zodat de striae minder zichtbaar wordt. …

This thesis describes how the abundance of CO2 a ects the porosity of H2O:CO2 ice mixtures deposited at di erent growth temperatures ranging from 30 - 70 K. The mixing ratios of the used ice samples H2O:CO2 = 10:1, 4:1 and 2:1 are of astrophysical relevance. Laser optical interference is used to monitor …

A new gravitation wave observatory is being built in Japan. This facility is a big Michelson interferometer where the mirrors and sensors will be made cryogenic down to 4 K. The problem is that: the heat cannot be transported out of the mirror by its surroundings because the whole system is in an ultra-high …