what is laser technology
laser Technology is basically device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The “laser” originated as “light amplification by stimulated emission of radiation”.Lasers differ from other sources of light because they emit light coherently. Optical lance allows a laser to be focused to a tight spot, enabling applications like laser cutting and Engraving.
laser technology and its application in medicine
“We are shining laser light at areas of the body to see what reaction we get. Lasers can tell us if there’s a cancer there because of subtle changes in what’s reflected back. By analysing what’s reflected back we can offer improved diagnosis,” he says.
Professor Nick Stone from the Biophotonic Research Group at Gloucestershire Royal Hospital confirms the importance of this kind of diagnosis using lasers – a technique called raman spectroscopy. It’s an area he’s been working on for 13 years.
“There’s less risk to patients too because they don’t have to go through unnecessary biopsies to find out whether the something’s dangerous or not,” he says.
Scientists are also gaining an insight into how diseases develop and how cells react to disease, using a technique called laser imaging. In this process, individual molecules are dyed and then illuminated by lasers.
In the future, scientists say the knowledge gained from this technique will enable them to tailor drugs to a particular individual’s needs. Personalised medicine, they predict, is guaranteed to be effective against an individual’s cancer with minimal side-effects.
Appleton Laboratory, which is home to the Central Laser Facility in Didcot.
These minute tweezers, made up of two laser beams, can hold and move microscopic particles allowing medical experts to isolate individual cells.
This technology has the potential to reduce the size of conventional accelerators so that they fit on a laboratory bench-top. These potentially portable machines would offer a host of medical applications, including cancer therapy.
laser technology and its uses in business
- Cutting and engraving of wood, Metal, Plastic, polymer, glass.
- Marking and Branding on products
- Personalized products making
laser technology and its advantages
there is no contact tool required, unlike normal machining in which the tool bit must be sharpened and often replaced.
brittle or very pliable materials that are very difficult or impossible to machine with tools can be processed using lasers. In fact, one of the first materials processing applications of a laser in the 1960’s was to make the holes in rubber baby bottle nipples, a difficult task to do otherwise with drilling.
using fiber optics, access to previously inaccessible locations is available.
laser processing is easily automated to allow computer and robot control.
new types of processing has and continues to be developed, including producing new surface alloys and hardening of materials.
Some of the problems with using lasers for processing include:
certain tasks, such as drilling large diameter holes, are difficult to accomplish with lasers, as we will see.
lasers and optics work best in clean and vibration-free environments, often difficult to achieve on the manufacturing floor.
initial costs can be large and so laser systems have been limited to large industry