LASER & Fiber Optics

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LASER

FIBER OPTIC

Definition

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Frequency

InventorHow

does it work?

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LASER Hazards

A laser is a device that emits light through a process of optical amplification based on the stimulated emission of 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.LASER = Light Amplification by Stimulated Emission of Radiation

Definition of LASER

Laser WavelengthDefinitio

nWavelength

Frequency

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LASER Frequency

Generally, the laser operates in the visible spectrum.

Definition

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Charles Hard Townes  (born July 28th , 1915)

Inventor

Arthur Leonard Schawlow (born May 5th , 1921)

In 1957, Charles Hard Townes and Arthur Leonard Schawlow, at Bell Labs, began a serious study of the infra red laser. As ideas developed, they abandoned infrared radiation to instead concentrate upon visible light. The concept originally was called an "optical maser".

Definition

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On May 16th 1960 , Theodore H. Maiman

operated the first functioning laser Maiman's

functional laser used a solid-state flashlamp – pumped synthetic ruby

crystal to produce red laser light, at 694 nanometres

wavelength.

Definition

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LASER Hazards

How does it work?

When the number of electrons in the atom receiving stimulant / energy from the outside, there was a release of energy in a time; process called stimulated emission .

Therefore, the workflow laser, electrons were first taken to a higher energy level . This action will make the atom unstable, so the electrons will quickly move to a lower energy level and releases a photon ( light ) .

Definition

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LASER Hazards

How does it work

These photons will be reflected by a mirror in the laser, and its interaction with the electrons in the excited state will generate another photon, the wavelength of the phase and the same wavelength. These photons are reflected back and interact with the electrons in the excited state. The other mirror held laser is half-silvered mirror, which only reflect some photons, while others bust out. Rays bust out of this is that light is monochromatic, coherent, and single-phase, which laser light.

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AplicationThe Aplication laser light in daily life for :• Laser Pionter• DVD / CD player• Printer• Barcode Detector• Laser Cutting• Lasik Operation

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LASER PrinterDefinition

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LASER Hazards

Definition

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Definition

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LASER HazardsDefinition

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LASER Hazards

Definition

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Application

Fiber optic (optical fiber) 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.

Definition of Fiber Optic

Part

Kind

Part of Optical Fiber

Cladding material surrounding the core is the function reflects the light backCore is the deepest part or the core of an optical fiber comprising one or more fibers, this fiber which is the path for the signal light the nucleus (core). Coating Buffer (wrapper) or it could called jacket is the outermost part is a plastic coating that will protect the optical fiber from damage caused by outside influences. such as humidity, abrasion and damage.

Definition

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Part of Optical FiberDefinitio

n

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Kind of Fiber Optic

• Single modeoptical fiber with the small core, the diameter close with the wave length, so that, the light which entered not reflected to the wall of cladding.

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• Multi modeoptical fiber with the core’s diameter little longer which make the laser in the core will reflected to the wall of cladding, it will be make the decreasing the bandwidth from this kind of optical fiber.

Definition

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1961 : Elias Snitzer and Will Hicks demonstrated that the laser beam is directed through a thin glass fiber (fiber optic). The glass fiber core is quite small which makes the light can only pass one section only.

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How does it worksDefinitio

n

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Application

The aplication of fober optics in daily life for :

• Cabel telephone• Cable for local area networking (LAN)• Optical fibres are used in a number of

instruments that enable doctors to view internal body parts without having to perform surgery.

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Convert to laser light waves

Computer

Internet

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CONCLUSION

• LASER is a mechanism for a device that emits electromagnetic radiation, through the process of stimulated emission.

• Fiber optics is one of the transmission medium capable of delivering data in the form of light with a large capacity with high reliability

http://id.wikipedia.org/wiki/Laserhttp://id.wikipedia.org/wiki/Serat_optikhttp://www.elektroindonesia.com/elektro/ut30.htmlhttp://www.healthiswealthmaui.com/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-ahttp://efendybloger.blogspot.com/2012/11/Apa-itu-Fiber-Optik-dan-Bagaimana-Cara-Kerjanya.html

REFERENCES

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