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Lasers

Animals

Larry’s Diary, Week One Hundred and Fifty-One

24th July 2022 Going Postal 0

Monday Good morning folks, I’m back! WG is back from his cruise and seems to have done little other than eat and laze around in the sun. Lots of things have occurred in No.10 while [more…]

Computing

A Simple R6G Dye Laser – Part 3

28th July 2021 Doc Mike Finnley 0

If you’ve been following along (well done you!) then you might recall that we need a fast switch that works at a very high voltage for the laser’s pump lamp and, indeed, for the laser [more…]

Computing

A Simple R6G Dye Laser – Part 2

21st July 2021 Doc Mike Finnley 0

Lamp Light And Laser Light Pulsed lasers, like this, use an intense burst of white light (lasting fractions of a second) to stimulate the electrons in the laser’s gain medium. In the above photo you [more…]

Computing

A Simple R6G Dye Laser – Part 1

14th July 2021 Doc Mike Finnley 0

Introduction First of all, it’s great to see that Going-Postal is still up and running. It’s always a pleasure to write an article and have it published here. It’s also good to see a lot [more…]

19th Century

Holography, Part Four

9th September 2020 Doc Mike Finnley 0

Holograph Examples The PFG-01 holographic film that I’ve used in the examples below is ideally suited to making transmission holograms but it can also be used to make reflection holograms. Reflection Holograms One of the [more…]

19th Century

Holography, Part Three

2nd September 2020 Doc Mike Finnley 0

A Simple Dual Beam Setup We’ve got our film, developer and a safety lamp. Now we need a holographic camera. Well, not exactly a camera. You can’t take a picture of rolling hills or a [more…]

Doc Mike Finnley, Going Postal
19th Century

Holography, Part Two

26th August 2020 Doc Mike Finnley 0

A Holographic Camera Standard photography uses a lens system to focus an image onto a film or an electronic sensor. If you recall from part one, Dennis Gabor had a problem with his electron microscope’s [more…]

Doc Mike Finnley, Going Postal
19th Century

Holography, Part One

19th August 2020 Doc Mike Finnley 0

Introduction To the Looking-Glass world it was Alice that said, “I’ve a sceptre in hand, I’ve a crown on my head. Let the Looking-Glass creatures, whatever they be Come dine with the Red Queen, the [more…]

Doc Mike Finnley, Going Postal
20th Century

Happy Birthday, Ruby!

16th May 2020 Doc Mike Finnley 0

Above photo: My ruby laser with a ‘mirror alignment laser’ just off to the right hand side of the photo. A small amount of smoke in the air makes the alignment laser-beam visible. In the [more…]

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