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scupydog
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Hi all, I've just got hold of a used helium neon 1 mW laser (spectra physics model 155) and would like to some experiments at home, does anyone know any good examples Thx
thx lok i'll try these (1st two)Lok said:You could get a diffraction pattern of a small slit or wire ( human hair works). Experiment with double slits, and many more.
You could try to burn something, but you need a good lens and exact alignment.
Its usual operation wavelength is 632.8 nm. Red part of the spectrum. So no chemical reactions that i can think of will occur (except very photosensitive materials).
With a crystal of potassium titanyl phosphate and complicated assembly you could double it's frequency ( 316.4 nm ).
mgb_phys said:holograms?
Not as such - you have no way of reconstructing the wavefront (ie viewing the hologram)scupydog said:hi I've looked at holography, would it be possible to replace the photographic paper with a digital camera??
Lambduh said:uses the white light of the room as the reference? beam to complete the hologram so it can be viewed at any time. If not you do need the laser to actually view the hologram as well if it is used for both the object and reference beams.
I'll see if i still have that stuff laying around anywhere and upload it. Note that it also takes a very stable optics table, a power meter so you can calculate the exposure time a decent amount of mirrors/mounts and the ability to develop the holographic plates...
Integral said:Look for http://en.wikipedia.org/wiki/Arago_spot" .
A Helium Neon laser is a type of gas laser that emits a red light with a wavelength of 632.8 nanometers. It consists of a mixture of helium and neon gases enclosed in a glass tube, along with mirrors at each end to reflect and amplify the light.
Yes, you can conduct laser experiments at home as long as you take proper safety precautions and follow instructions carefully. Laser pointers, such as the 1mW Helium Neon laser, are relatively safe to use for home experiments.
Some possible experiments you can do with a 1mW Helium Neon laser include measuring the speed of light, creating diffraction patterns, and demonstrating the properties of laser light, such as coherence and monochromaticity.
In addition to the Helium Neon laser, you may also need some basic equipment such as mirrors, diffraction gratings, and lenses. These can be purchased from science supply stores or online.
Yes, it is important to always wear proper eye protection when working with lasers. Also, be sure to read and follow all safety instructions that come with your laser, and never point the laser at anyone's eyes or reflective surfaces.