applications of laser

1. MASHITHOH BT ROSLI
ROSLINA BT MUHAMAD
MASSURIATI BT CHA

2. • is a device that emits light stimulated emission
•Laser light is usually spatially coherent
- the light either is emitted in a narrow,
- low divergence beam
- can be converted into one with the help of optical
components such as lenses.
• have the same frequencies and identical phase.

4. 4. Military
3. Industry
2. Medical
1. scientific
Application
of laser

5. 1. APPLICATION IN SCIENTIFIC
1. SPECTROSCOPY
• Can be referred to the use of visible light dispersed according
to its wavelength
e.g. by prism
• Laser become a very useful source for spectroscopy
WHY? - Because laser is an inherently pure source of light
• Spectroscopic can be used to make extremely sensitive
detectors of various molecules, able to measure molecular
concentrations.
• Lasers may also be indirectly used in spectroscopy as a micro-
sampling system, a technique termed Laser (LA), which is
typically applied to apparatus resulting in the powerful LA-
ICP-MS.

7. 2. Lunar laser ranging
 When the Apollo astronauts visited the moon, they planted
lunar retro reflector arrays to make possible the Lunar Laser
Ranging Experiment. Laser beams are focused through large
telescopes on Earth aimed toward the arrays, and the time
taken for the beam to be reflected back to Earth measured
to determine the distance between the Earth and Moon with
high accuracy.
 retro reflector-~ is a device or surface that reflects light back
to its source with a minimum scattering of light.

8. lunar retro reflector Lunar laser ranging

9. 3. Photochemistry
 Photochemistry is a techniques that can be
used to initiate and analyze chemical reactions
 The short pulses can be used to probe the
process of the reaction at a very high temporal
resolution, allowing the detection of short-
lived intermediate molecules.
 This method is particularly useful in
biochemistry, where it is used to analyze
details of protein folding and function.

10. Photochemistry

11. 4. Laser cooling
 Is a technique that had recent success
 This involves atom trapping, a method where a
number of atoms are confined in a specially
shaped arrangement of electric and magnetic
fields.
 Shining particular wavelengths of laser light at
the ions or atoms slows them down, thus
cooling them.
 As this process is continued, they all are
slowed and have the same energy level,
forming an unusual arrangement of matter
known as a Bose -Einstein condensate.

12. Laser cooling Mirror

13. 5. Nuclear fusion
 are used to produce extremely high intensity pulses of
light of extremely short duration.
 These pulses are arranged such that they impact
pellets of tritium-deuterium simultaneously from all
directions, hoping that the squeezing effect of the
impacts will induce atomic fusion in the pellets.
 This technique, known as “inertial confinement
fusion”

15. 6. Microscopy
 Con focal laser scanning microscopy and two photon
excitation microscopy make use of lasers to obtain
blur-free images of thick specimens at various depths.
 Laser capture micro dissection use lasers to procure
specific cell populations from a tissue section under
microscopic visualization.
 Additional laser microscopy techniques include
harmonic microscopy, four-wave mixing microscopy
and interferometric microscopy.

17. 1. Cosmetic surgery (removing tattoos, scars, stretch
marks, sunspots, wrinkles, birthmarks and hairs)
2. Eye surgery and refractive surgery
3. Soft tissue surgery
4. Laser scalpel (General surgery, gynecological,
urology, laparoscopic)
5. Dental procedures, in dentistry for caries removal,
tooth whitening and oral surgery.
6. Photobiomodulation (i.e. laser therapy)
7. "No-Touch" removal of tumors, especially of the
brain and spinal cord.

18. 3) Application in Industrial
1. Lasers used for visual effects during a musical
performance. (A laser light show)
2. Cutting and peening of metals and other
material, welding, marking, etc
3. LIDAR / pollution monitoring
4. Barcode readers
5. Laser engraving of printing plate
6. Laser bonding of additive marking materials for
decoration and identification.
7. Optical communications (over optical fiber)

19. 8. Writing subtitles onto motion picture films.
9. Extensively in both consumer and industrial imaging equipment and image.
10. In laser printers: gas and diode lasers play a key role in manufacturing high
resolution printing plates and in image scanning equipment.
11. Additive manufacturing.
12. In consumer electronics, telecommunications, and data communications,
lasers are used as the transmitters in optical communications over optical
fiber.
13. To store and retrieve data in optical discs.
14. Laser lighting displays (pictured) accompany many music concert.

20. Decoration of watermelons

22. This egg shells were cut with a high
intensity precision Laser Beam.

23. Incredible what can be done with an
eggshell and a laser beam.

24. Application of laser
Laser engraving
Cataract surgery

25. Military uses of lasers include applications such
as :
 target designation and ranging,
 defensive countermeasures,
 airborne laser weapons

26. Laser rangefinder
 device consisting of a pulsed laser and a light
detector.
By measuring the time taken for light to reflect
off a far object, and knowing the speed of light, the
range to the object can be found.
The distance to the target can then be used to
aim a weapon such as a tank's main gun.

27. A target designator
 Example : Laser designator
low-power laser pointer used to indicate a target
for a precision-guided munitions, typically launched
from an aircraft.
Firearms
 Example : Laser Sight
 The laser has in most firearms applications been
used as a tool to enhance the targeting of other
weapon systems

28. Laser target designator Laser sight

29. Eye-targeted lasers
 A non-lethal laser weapon was developed by the
U.S. Air Force to temporarily impair an adversary’s
ability to fire a weapon or to otherwise threaten
enemy forces.
can have the effect of dazzling or disorienting the
subject or causing him to flee.
There remains the possibility of using lasers to
blind, since this requires much lower power levels,
and is easily achievable in a man-portable unit.

30. Defensive Laser System :
a) complex system of lasers to find, track and destroy
intercontinental ballistic missiles (ICBM).
-Used to confuse the seeker heads on heat-seeking
anti-aircraft missiles.
b) Mobile Tactical High-Energy Laser (MTHEL) is
another defensive laser system under development; --
- able to track incoming artillery projectiles and cruise
missiles by radar and destroy them

31. c) Strategic Defense Initiative (SDI, nicknamed
"Star Wars"). use ground-based or space-based laser
systems to destroy incoming intercontinental
ballistic missiles (ICBMs).
d) Nuclear-pumped X-ray laser. This was
essentially an orbiting atomic bomb, surrounded by
laser media in the form of glass rods; when the
bomb exploded, the rods would be bombarded with
highly-energetic gamma-ray photons, causing
spontaneous and stimulated emission of X-ray
photons in the atoms making up the rods.

32. -the system mounted in a Boeing C-130 Gunship.The
system was developed to melt tanks and take out
missiles from five miles away.

33. Bushnell tour v2 laser
rangefinder with pin
seeker thumb
Laser weapon

34. laser rangefinder.jpg
LS II Laser Sight 1A

35.  laser play big role in our world today.
 the applications of laser in environment
today make everything more easy in medical,
military, scientific, and industry scope.

36. ~THE END~
ALL THE BEST FOR
OUR FINAL EXAM !!