Laser is an optical device that generates intense beam of coherent monochromatic light. By focusing photons of lights on a single spot.
A laser Iis a device emits light through a process of optical amplification based on stimulated emission of electromagnetic radiation. LASER is an acronym for “Light Amplification by Stimulated Emission of Radiation”
Laser have wide applications in the field of science and technology. since its invention in 1960 by “Theodore Harold”.
Applications of laser light
A laser differs from other sources of light because laser light emits light which is coherence, monochromacity, directionality, and high intensity.
laser light also emit light with a very narrow spectrum, i.e. they can emit a single color of light.
Generally, laser light have got wide applications in the following fields;
- Computer devices such as optical disk drives, laser printers, barcode scanners
- Astronomy and optical communication
- Medicine such as in surgery, and DNA sequencing
- War machines, guns and tanks
- Cutting matters in metallurgy industry and related industries
- Robotics, especially in image processing and calculating distances.
Applications of Laser in computer devices
Many electronic devices and gadgets use LASER. For example, optical disk drives, LASER printers, Logo making machines, Barcode scanners.
An optical disc drive (ODD): is a disc drive that uses laser light or electromagnetic waves within or near the visible light spectrum as part of the process of reading or writing data to or from optical discs.
Laser printer: is an electrostatic digital printing process. It produces high-quality text and graphics by repeated passing of a Laser beam back and forth over a negatively charged cylinder called a “drum” to define a differentially charged image. this action is possible due to the ability of laser to emit monochromatic light and narrow spectrum.
Barcode scanners are devices that use some sort of light-emitting device and a photoconductor to read barcodes.
Application of laser in optical communication
Optical communication is the transfer of information to a far distance by encoding a message into an optical signal. this is due to the extreme speed of laser lights. an example of a Laser application in optical communication is free-space optical communication. free-space optical communication (FSO) is an optical communication technology that uses light propagating in free space to wirelessly transmit data for telecommunications.
Application of Laser in medicine
Lasers can be applied for many medical purposes. Because the laser beam is so small and precise. laser makes it easy for health care providers to safely treat tissue without injuring the surrounding area. lasers is judiciously applied in:
- Cancer diagnosis.
- Cancer treatment.
- DNA sequencing.
- Low-Level Laser Therapy
DNA sequencing is the process of sampling DNA through a DNA sequencer. A DNA sequencer is an optical instrument which determine the order of the four bases: G (guanine), C (cytosine), A (adenine) and T (thymine). this process uses a laser because it reports the result as a text string.
Applications of laser in war machines, guns, and tanks
Due to the huge amount of energy that laser emits, some of the world’s most powerful and complex arrangements of multiple lasers and optical amplifiers which are used to produce extremely high-intensity pulses of light at extremely short durations. Laser application in the manufacture of weapons because it produces a huge amount of energy which can be direct to a specific target. Laser weapons include; LLM01 laser light module, Laser dazzler, Laser designator, ZM-87, etc. Laser applications in these weapons are majorly to enhance the targeting of other weapon systems because laser light is monochromatic and coherent in nature.
Applications of laser in metallurgy industries
Generally, Laser had got huge application in the metallurgical industry. Many industrial processes require a tremendous amount of heat, Laser applies in the following areas;
- cutting of heavy metal and hard objects like diamond
- welding of metals
- drilling and shaping of metals etc
Laser cutting is a technology that uses a laser to slice materials. it works by directing the output of a high-power laser through optics laser. laser optics focus laser beam directly at the material, which then either melts, burns or vaporizes away, leaving an edge with a high-quality surface finish.
Laser beam welding (LBW) is a welding technique for joining pieces of metal or thermoplastics through the use of a laser. The beam provides a concentrated heat source, allowing for narrow, deep welds and high welding rates.
Laser drilling is the process of creating “thru-hole”, by focusing laser energy on material because laser light is directional and precise.