Laser

A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term "laser" originated as an acronym for "light amplification by stimulated emission of radiation". The first laser was built in 1960 by Theodore H. Maiman at Hughes Research Laboratories, based on theoretical work by Charles Hard Townes and Arthur Leonard Schawlow. A laser differs from other sources of light in that it emits light which is coherent. Spatial coherence allows a laser to be focused to a tight spot, enabling applications such as laser cutting and lithography. Spatial coherence also allows a laser beam to stay narrow over great distances (collimation), enabling applications such as laser pointers and lidar. Lasers can also have high temporal coherence, which allows them to emit light with a very narrow spectrum, i.e., they can emit a single color of light. Alternatively, temporal coherence can be used to produce pulses of light with a broad spectrum but durations as short as a femtosecond ("ultrashort pulses").

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Laser Shooting Game (Star Wars)

“In this article I will share arduino based star wars project that you can make on a budget. This project is a laser shooting game that will suit you as a homemade product. This project consists of 2 sub projects …

Laser Drawing Machine

“Draw phosphorescent light trails with a machine designed and built completely from scratch! The story: In between studying breaks during midterm week, my friend Brett and I designed and built this machine that utilizes a laser and mirror system to …

IOT Home Security System with Particle Argon

“Home Security at the touch of your fingers! Get notifications when your house door opens and sends an alert to your phone. Home security systems can be so expensive these days. It would be great if there was an easier …

Design and build a wireless laser engraver cum pen plotter using fusion 360 and 3D printing

“A couple of months back while checking out a few laser engravers on aliexpress, I came across some USB powered laser engravers, It was awesome that these could engrave on a variety of materials and also cut out shapes and …

Dr. Tape Head - Undead Media

“Dr. Tape Head is the perfect spooky companion when you’re working late in the lab! He uses Amazon’s Polly service to read out text from a Google Sheets spreadsheet, populated by the IFTTT service and gathered from Twitter …

Rs485 Arduino And Industrial Distance Sensor

“I have in my hand a distance laser sensor with high precision and speed. It is used in industrial environments for object positioning or detection applications. According to technical documents, I found it can communicate with other devices via RS485 …

How to Make a Laser Turret for Your Cat

“Story Servos of this turret are controled by the joystick : Y axis of the joystick controls the horizontal sweep X axis of the joystick controls the vertical sweep”

Make Your Own *Really* Cheap Interferometer

“Hello Everyone! Welcome to another instructable by Let’s Innovate. In this instructable I will guide you to make your very own really cheap interferometer. Emphasis on the “really cheap” part because there are many costly kits out there you …

3D Printer Laser Modification

“Most of my DIY projects make use of a 3D printer. The big advantage is that you can design and make your own 3D objects. In a previous instructable I’ve assembled and improved an Anet A8 3D printer. And …

DIY Arduino Mini Laser Engraver

“Hello Guys Whatsup, In this instructable, I am making an Awesome mini laser engraver from old DVD writers. It’s an amazing machine. You can use this laser engraver machine to make any kind of design, logo, art on the …