A team of scientists from Anglo-German scientists published a paper in the recently published issue of Science in Progress claiming that for the first time, they inserted the fluorescent protein gene in the jellyfish into the genome of E. coli and produced the enhanced green fluorescent protein using the transgenic E. coli (eGFP) and used to generate laser light. The breakthrough, which represents a major advance in Polaritons, is much more efficient and densified than conventional lasers and is expected to open new avenues for research in quantum physics and optics.
Recently, according to the American Fun Science Network, traditional Polariton lasers used inorganic semiconductors as a gain medium must be cooled to extremely low temperatures; while organic electronic materials in organic light-emitting diode (OLED) displays can operate at room temperature, Need picoseconds (trillionth of a second) light pulse for energy. The new laser developed by the research team also works at room temperature, but only nanoseconds (1 billionth of a second) pulses.
Polarimetric lasers come from a phenomenon of quantum coherence: the atoms or molecules in a laser gain medium repeatedly absorb and emit photons, creating a quasi-particle called a polariton that becomes a united quantum state under certain conditions Send out a laser Theoretically, Polaritons lasers need less energy.
The researchers filled the eGFP produced by the transgenic E. coli in many optical microcavities as an "optical pump" that emits flashes at nanoseconds to deliver the entire system the energy needed to generate the laser. The "light pump" can inject more energy into the device to create a traditional laser after it reaches the excitation threshold. One of the laser's inventors, Martin Gacer, a professor of physics and astronomy at the University of St Andrews in Scotland, said picosecond pulses are more energetic, but 1000 times more pumped than nanosecond pulses, and their practice has simplified many manufacturing Process.
Gather also pointed out that a key advantage of the new method is that the light-emitting part of the protein molecules are protected by a nano-sized cylindrical shell, so that they will not interfere with each other, the molecular structure is very suitable for working under high brightness, and more Easy to send laser. However, the current excitation threshold is still too high. In the future, the excitation threshold will be much lower than that of the conventional lasers, so the efficiency will be higher and the light will be more dense.
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