Researchers from Japan confirm that it is possible to use laser technology for lasing by direct electrical stimulation of an organic film. Later they have demonstrated a laser system diode that is based on organic semiconductors. Traditionally, organic laser system diodes create a pure light, however, higher magnitudes of currents are required than it is usually applied in OLEDs to provide the laser technology process.
Thus, it is quite difficult to obtain enough electrical charges in numerous organic materials because of their high level of resistance to the electricity before the materials heat up and burn out. Moreover, most organic materials and laser system devices operating under high currents face different loss processes, consequently, the efficiency reduces and the necessary current up becomes higher.
In order to resolve the mentioned issues and successfully present an organic laser system diode, it is required to apply a highly efficient organic light-emitting material (BSBCz) in the laser technology, herewith, the material offers comparatively low resistance to electricity and a low level of losses, in spite of the fact that huge amounts of electricity are injected.
The design of the developed laser device includes a structure with a grid of insulating material on top of one of the electrodes applied to inject electricity into the organic thin films. It should be noted that these grids or distributed feedback structures in laser system devices are able to create the optical effects required for laser technology.
The optimization of the grids opens new possibilities and allows getting the required optical properties, as well as monitoring the electricity flow in the laser system devices, and reducing the amount of electricity necessary to supervise laser system processes from the organic thin film.
The improved laser technology has been tested concerning laser beam emission under current injection. The researchers confirm that the successful laser beam emission is connected with the clear separation of the lasing wavelength from significant absorption because of charge carriers and triplet excitons.
At the present time, the researchers overcome the final obstacles that interfere to make the organic laser system diodes used in commercial applications. Also, they believe that the laser system device can find an application in biosensing, displays, health care, and optical communications.
Despite the fact that there are a lot of doubts in the people community whether it would be possible to realize an organic laser system diode, nonetheless, the laser technology of slowing chipping away at the different performance limitations with developed materials and new laser system device structures finally makes it real.
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