Laser principles and applications pdf
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Dye Laser Principles
A laser beam machining is a non-conventional machining method in which the operation is performed by laser light. The laser light has maximum temperature strikes on the workpiece, due to high temp the workpiece gets melts. The process used thermal energy to remove material from a metallic surface. In this process, the Laser Beam is called monochromatic light, which is made to focus on the workpiece to be machined by a lens to give extremely high energy density to melt and vaporize any material.
The Laser Crystal Ruby is in the form of a cylinder as shown in the above figure or Diagram with flat reflecting ends which are placed in a flash lamp coil of about W. The Flash is simulated with the high-intensity white light from Xenon. The Crystal gets excited and emits the laser beam which is focused on the workpiece by using the lens. Which produces high heat and the portion of the metal is melted and vapourises.
A high voltage is required for Laser. The power is supplied to the system for exiting the electron. When the power is supplied the electron gets in an excited state that means ready to work. In general we know the work of capacitor, It is used for storing and releasing the charge.
Here it is used during the flashing process. Reflecting Mirror is used here to reflect the light directly to the workpiece. It is of two types Internal and external. Lense are provided here for vision purpose. It shows the image into bigger size so that it will be easy to perform operation on the given work piece mark.
Work piece is like the object in which the operation is to be carried out. Example if body needed any laser operation then we are the work piece for this machine, same like manufacturing the objects needs to be drill or hole the Laser machine carried out the operation.
So this is all about Laser Machining, I hope you like my article. I also wrote articles on some other processes do check out those too. Your email address will not be published. Save my name and email in this browser for the next time I comment. In this article, you will get to know about Rake Angle, its importance and its types. So let's get started. What is a Rake Angle? In this article, I will be going to give you an in-depth overview of the Quick Return Motion Mechanism.
So let's get started! What is the Quick Return Mechanism? A quick return motion mechanism Skip to content. Page Contents. Laser Beam Machining. Join Us on Telegram. Leave a Reply Cancel reply Your email address will not be published. Continue Reading.
Principles of Lasers and Optics
This new Fifth Edition of Principles of Lasers incorporates corrections to the previous edition. Svelto emphasizes the physical rather than the mathematical aspects of lasers, and presents the subject in the simplest terms compatible with a correct physical understanding. Schawlow, Nobel Laureate in Physics. It is logically organized and easy to read … Most of the basic mathematical framework needed to understand this evolving field is presented. Every chapter contains a good set of problems, answers to some of which are given in the back. His research has covered a wide range of activity in the field of laser physics and quantum electronics, starting from the very beginning of these disciplines. This activity includes ultrashort-pulse generation and applications, development of laser resonators and mode-selection techniques, laser applications in biology and medicine, and development of solid-state lasers.
Lasers and Laser Applications
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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 ". 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.