Eglin Team 3

Initial System:

Our intial design consisted of two helium-neon gas laser corresponding with 2 5mm photodiode receiver modules. The receivers are attached to a custom made bracket and are powered by a 2-channel power supply.

 

Components:

Lasers

The lasers used in the velocity measurement will be two JDS Uniphase helium-neon gas lasers. The lasers will produce a continuous 0.5 mW beam of red light with a 634 nm. The laser is classified as class II which mean that it can be operated with out any safety equipment.

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Detectors

The velocity system will use two Edmund Optics photodiode receiver modules to process the laser signals. The photodiode modules consist of a power supply, a photodiode, and a set of operational amplifiers. The photodiode selected is a silicon p-n type with a circular effective area that has a diameter of 5 mm.

 

Alignment

A new bracket will be used to attach to the mounting device. It will restrict the detectors one degree of freedom less compared to the original bracket.
Old Bracket
New Bracket