Lab0 - PHYS375 F10: Matlab and LabJack Programming Exercise...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
PHYS375 F10: Matlab and LabJack Programming Exercise Matlab can read analog voltages from a data acquisition unit (“ LabJack ”) through USB. The goal of this exercise is to learn to use Matlab with the LabJack to record the optical intensity of a laser with a photodiode – an operation we will be using for the experiments in PHYS375 over and over again throughout this semester. The major components are: A semiconductor diode laser , driven by electrical injection from a voltage source, which produces a directed optical beam of coherent 635nm (red) light. This diode is “ edge-emitting ”, resulting in a beam of elliptical cross-section. An amplified photodiode converts the incident optical intensity into a proportional voltage. After securely mounting your laser, turn it on. Use the thumbscrews to align the laser beam level with the breadboard. Mount the photodiode so that the aperture is at the same height as the laser beam. Turn on the photodiode.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/29/2011 for the course PHYSICS 375 taught by Professor Eno during the Spring '11 term at Maryland.

Page1 / 2

Lab0 - PHYS375 F10: Matlab and LabJack Programming Exercise...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online