This document discusses lasers and their applications. It begins by introducing lasers and some of their key components. It then discusses several medical applications of lasers, such as treating eye diseases and removing tumors. Industrial applications are also mentioned, including barcode scanning, cutting and drilling materials, and 3D printing. Defense and security applications include laser-guided munitions, night vision, targeting, and range finding. Lasers are also used for holography. The document provides examples of specific lasers, such as neodymium YAG lasers, and includes images related to laser setup and use.

1. Sal Institute Of Technology
&
Engineering Research

2. Physics
Laser
Guidance By,

3. Laser Radiation

4. Contents
Laser Application
Definition Of Lasers
Population Inversion
Material Used for Semiconducting Laser
Quantum Devices
Laser Safely

5. Laser Application
Medical Purpose
Lasers are used extensively in the
treatment of eye-diseases ,particularly
to reattach a detached retina.

6. Laser Application
Medical Purpose
 To destroy cancerous
and precancerous
cells; at the same
time, the heat seal
off capillaries,
 To break up gallstones
and kidney stones
 To remove plaque
clogging human arteries

7. Laser Application
Industrial Purpose
 Laser light is used to collect the information about
the prefixed prices of various products in shops and
business establishments from the barcode printed on
the product.
 lasers are used now for cutting, drilling and
welding of metals and other materials.
 IDAR –Light Detection & Ranging (Mines)
 Leveling of Ceramic Tile Floor

8.  A variety of 3D printing techniques have
appeared in the last few years.
 SLA: Stereolithography: laser curing of liquid
plast
LaserApplication
PC-board CAD tools 3D Printers

9. Laser Application
DEFENCE & SECURITY
 LASTEC- HPL Researches (Laser Science & Technology
Centre)
 DEFENCE & SECURITY
 Indian ARM industry :- OFB (Ordinance Factories
Board )
 Indian ARM industry :- OFB (Ordinance
Factories Board )
 Laser guided munitions
 Designated from air or ground
 Thermal homing missiles
 Optical Guidance
 Night Vision

10. Laser–Military Application
 Targeting tool
 Absorbed by target – thermal radiator
 by target – selective radiator
 Modulated
 Different lasers of the same frequency to be
deconflicted and
 limits enemy interference
 Weapon Systems: Hellfire, Maverick, Rockeye
 Laser Range finders, Beam riders, and laser
target
 designators (LTD)
 THEL & MHEL - Tactical High Energy Laser
(Shootdown incoming)

11. Laser Application
Holography
 Holography is the production of holograms by the
use of laser.

12. LaserApplication
Holography
 Possible medical applications using the technology
 Surgical procedures (using tracking capabilities)
 Rehabilitation techniques & Gaming

13. Basic Laser
Light Amplification By
stimulated
Emission Of Radiation

14. Common Laser System

15.  The Active Medium contains atoms which can
emit light by stimulated emission.
 The Excitation Mechanism is a source of
energy to excite the atoms to the proper
energy state.
 The Optical Resonator reflects the laser
beam throughv the active medium for
amplification.High Reflectance Mirror (HR)
Output CouplerMirror (OC) Active Medium
Output Beam.
BASIC LASER COMPONENTS

16. Laser Wavelength Line width

17. NEODYMIUM YAG LASER
Medium :- Neodymium-Doped Yttrium
Aluminum Garnet Crystal
State :- Solid
Excitation :- Diode Laser
Beam :- 1064 nm infrared
Uses :- Cataract ,Glaucoma ,
Gingivectomy surgeries

18. CURBS ON OPTICAL TABLE

19. BEAM CONTROL

20. COMPUTERS IN RESEARCH LABS

21. Thank You