LASER & Fiber Optics

Dian Lestari

Dwi Lestari R.

Dwi Tiara Tanjung

Laser

Definition

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Frequency

Inventor

How does it work?

Application

LASER Hazards

Laser is a device mechanism that emitselectromagnetic radiation, usually in the formof light that can not be seen or can be seenwith normal eyes, through the process ofstimulated emission.

LASER = Light Amplification by StimulatedEmission of Radiation

Definition of LASER

LASER WavelengthDefinition

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Frequency

Inventor

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LASER Hazards

LASER Frequency

Generally, the

laser operates

in the visible

spectrum.

Definition

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LASER Hazards

Characteristics of LASER

1.The monochromatic property oflaser light means it is all onewavelength.

2. The directional property of laserlight means that the beam spreadsvery slowly.

3. The coherent property of laserlight means that all the light wavesare in phase.

Definition

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Inventor

How does it work?

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LASER Hazards

Charles Hard Townes (born July 28th , 1915)

Inventor

Arthur Leonard Schawlow (born

May 5th , 1921)

In 1957, Charles Hard Townes and ArthurLeonard Schawlow, at Bell Labs, began aserious study of the infra red laser. As ideasdeveloped, they abandoned infrared radiationto instead concentrate upon visible light. Theconcept originally was called an "opticalmaser".

Definition

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Frequency

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LASER Hazards

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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Frequency

Inventor

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LASER Hazards

How does it work?

When the number of electrons in the atomreceiving stimulant / energy from theoutside, there was a release of energy in atime; process called stimulated emission .Therefore, the workflow laser, electrons werefirst taken to a higher energy level . This actionwill make the atom unstable, so the electronswill quickly move to a lower energy level andreleases a photon ( light ) .

Definition

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Frequency

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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.

Definition

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The Aplication laser light in daily life for :

• Laser Pionter

• DVD / CD player

• Printer

• Barcode Detector

• Laser Cutting

• Lasik Operation

Definition

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Frequency

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LASER Hazards

LASER PrinterDefinition

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LASER Hazards

Definition

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LASER Hazards

Definition

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LASER Hazards

LASER HazardsDefinition

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LASER Hazards

1. Eye : Acute exposure of the eye to lasers of certainwavelengths and power can cause corneal orretinal burns (cataracts).

2. Skin : Acute exposure to high levels of opticalradiation may cause skin burns.

3. Chemical : Some lasers require hazardous ortoxic substances to operate.

4. Electrical : Most lasers utilize high voltages thatcan be lethal.

5. Fire : The solvents used in dye lasers areflammable. High voltage pulse or flash lamps maycause ignition.

LASER HazardsDefinition

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LASER Hazards

Definition

Inventor

How does it work?

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 back

Core 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

Kind

Definition

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Kind of Fiber Optic

• Single mode

optical 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.

Definition

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Application

Part

Kind

• Multi mode

optical 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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Inventor

1961 : Elias Snitzer and Will Hicksdemonstrated that the laser beam isdirected through a thin glass fiber (fiberoptic). The glass fiber core is quite smallwhich makes the light can only pass onesection only.

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How does it worksDefinition

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Application

The aplication of fober optics in daily life for :

•Cabel telephone

•Cable for local area networking (LAN)

Definition

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Part

Kind

Convert to laser light waves

Computer

Internet

Definition

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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/Laser

http://id.wikipedia.org/wiki/Serat_optik

http://www.elektroindonesia.com/elektro/ut30.html

http://www.healthiswealthmaui.com/laserfrequencies.html

http://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

REFERENCES

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