Laser and Optical fiber

DefinitionLaser

Laser is a device mechanism that emits electromagnetic radiation, usually in the form of light that can not be seen or can be seen with normal eyes, through the process of stimulated emission. The emission of laser is usually single, emits photons in a coherent emission. Lasers can also be said of the effects of quantum mechanics. The term "laser" originated as an acronym for Light Amplification by Stimulated Emission of Radiation.

Optical fiberAn optical fiber (or optical fibre) is a flexible, transparent fiber made of glass (silica) or plastic, slightly thicker than a human hair. It functions as a waveguide, or “light pipe”, to transmit light between the two ends of the fiber.  The light source that used is usually laser or LED

Definition

Frequency RangeIn terms of frequency, this

corresponds to a band in the vicinity of 430–790 THz

Around 405 nm produces a violet light600 - 700 nm results in visible red

light, which penetrates up to 1/2".

Wavelength

Generally, the laser operates in the visible spectrum

How it works?

How it works?

FounderCharles Hard

Townes (born July 28, 1915

Arthur Leonard Schawlow (May 5, 1921 – April 28, 1999)

Founder

In 1957, Charles Hard Townes and Arthur Leonard Schawlow, then at Bell Labs, began a serious study of the infrared laser. As ideas developed, they abandoned infrared radiation to instead concentrate upon visible light. The concept originally was called an "optical maser". In 1958, Bell Labs filed a patent application for their proposed optical maser; and Schawlow and Townes submitted a manuscript of their theoretical calculations to the Physical Review, published that year in Volume 112, Issue No. 6.

ApplicationMedicine: Bloodless surgery, laser

healing, surgical treatment, kidney stone treatment, eye treatment, dentistry

Industry: Cutting, welding, material heat treatment, marking parts, non-contact measurement of parts

Military: Marking targets, guiding munitions, missile defence, electro-optical countermeasures (EOCM), alternative to radar, blinding troops.

Law enforcement: used for latent fingerprint detection in the forensic identificationfield

ApplicationResearch: Spectroscopy, laser ablation,

laser annealing, laser scattering, laser interferometry, LIDAR, laser capture microdissection, fluorescence microscopy

Product development/commercial: laser printers, optical discs (e.g. CDs and the like), barcode scanners, thermometers, laser pointers, holograms, bubble grams.

Laser lighting displays: Laser light showsCosmetic skin treatments:  acne treatment,

cellulite and striate reduction, and hair removal.

Laser healing

1. Sebuah sinar masuk dari medium udara ke medium gelas. Tentukan berapa besarnya sudut jika sudut datangnya , n1= 1 dan n2=1,5

Jawab

 

Questions

2. Bahaya dari penggunaan sinar laserCidera mata

Laser dapat membakar retina mata dan bahkan permukaan kulit jika tidak tepat dioperasikan

3. Apa Keuntungan Fiber Optik Dibanding Media Lain?- Lebih kecil ukurannya- Penurunan kualitas sinyal lebih

sedikit- Daya listrik kecil- Ringan dan fleksibel- Komunikasi lebih aman

Daftar Pustakahttp://id.wikipedia.org/wiki/Laserhttp://id.wikipedia.org/wiki/Serat_

optikhttp://www.elektroindonesia.com/

elektro/ut30.htmlhttp://www.healthiswealthmaui.c

om/laserfrequencies.htmlhttp://www.google.com/search?q

=soal+dan+jawaban+sinar+laser+dan+serat+optik&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a

http://efendybloger.blogspot.com/2012/11/Apa-itu-Fiber-Optik-dan-Bagaimana-Cara-Kerjanya.html