Understanding LASER and the Benefits of LASER | Laser stands for Light Amplification by Stimulated Emission of Radiation . Laser is a device that produces coherent, high-intensity, easy-to-direct, and straight- lined beams of electromagnetic radiation. Coherent light means that the rays produce hills and valleys at the same time (same phase). Laser formation occurs when an atom which are in the excitation level are irradiated with certain appropriate photons so that they are stimulated and descend to lower energy levels by emitting certain photons of light as well.
A number of scientists at Harvard University, United States succeeded in creating a lard laser beam , reported in the journal Nature Photonics. The scientists used a number of substances in lard cells to create a cellular laser beam . Read more about laser marking steel.
Due to its nature, light wrapped in a transparent sphere, in this case a cell, will turn into a more focused or sharper laser beam.
Previously scientists at Harvard had tried to make cellular lasers using human cells. But a human cell can function as a laser emitter if it is inserted into an optical cavity.
Well, in the latest study, scientists found that lard cells are more suitable to be laser beam emitters. Each lard cell is known to contain a large fat ball, almost perfectly spherical in shape, which is perfect for emitting laser light without the need for an optical cavity as in the experiments with human cells.
Scientists only need to insert a dye that can glow into the cells. To ignite the substance, they touched the cell with optical fibers that channeled energy into the cell.
Seok Hyun Yun, a Harvard researcher who led the study on lasers from pork oil, said his findings are expected to be used in the world of health, for example as research tools, sensors, or as part of certain drugs.