EU Funding For the Manufacture of New Laser Light Source from huangxiangfeng's blog

Over the past decade, the so-called single-layer materials by scientists attach great importance to these materials in the field of physics has a very large potential. At the beginning of 2016, the research team of the University of Würzburg was supported by the European Research Council (ERC) 15 million euros for the study of transition metal sulfides (TMDC). Some progress has been made.

In physics, a & quot; monolayer & quot; refers to a minimum thickness of a solid material, typically a single atomic layer thickness, and the crystalline material may be three or more blue laser pointer of atoms, also referred to as two-dimensional materials. Two-dimensional materials often exhibit unexpected properties. Such as TMDC, have similar characteristics of the semiconductor can be used to manufacture ultra-small, energy-efficient chip. TMDC has a fairly simple two-dimensional structure. Molybdenum or tungsten and other transition metal atoms in a single row structure, caught in the same thin layer of sulfur between the elements. TMDC made with different base components has a wide range of electronic and optical properties.

The team at the University of Würzburg, Germany, found that TMDC can emit light when it absorbs energy. Experiments show that this new single-layer material can be used in the manufacture of new energy efficient laser source can also be used for quantum effects research.

Quantum Communications Research: First, a single layer of material is prepared by a simple method. In the first step, the multilayer film is peeled off from the TMDC crystal with tape. A thinner film is peeled off from the multilayer film, and is repeated to obtain a single-layer material. The monolayer material is then cooled to a temperature slightly above absolute zero and excited with a 3000mw laser pointer, under which the single layer of material will emit a single photon. The researchers explained that, in fact, the excitation of two photons, light particles are produced in pairs. This photon is very interesting to the source: the photon pairs of two photon states overlap each other, entangled together. The state of one photon directly affects the other photon, and is not limited by distance, a principle that can be used to encrypt communications.

For new laser sources: Scientists at the University of Würzburg have demonstrated another application of this monolayer material. A single layer of material is placed between the two mirrors and then excited with a laser. When the laser radiation reaches a certain degree, TMDC starts to emit photons. These photons hit the mirror and send color back to the TMDC plate, which stimulates TMDC atoms to produce new photons. "We call this process a strong coupling, and the action of light and matter produces exciton-polarized photons." This is the first time that polarized photons have been detected at room temperature in monatomic layers. This "clone" photon has similar properties to 400mw laser pointer, but produces a fundamentally different principle. Ideally, after the initial excitation, new light particles can be generated by self-sufficiency, without any additional energy supply. In contrast, the laser material in the laser requires external sustained excitation.

http://laserman123.canalblog.com/archives/2016/11/08/34539740.html

http://faceluck.org/blogs/post/5908#sthash.5sempsXl.BdXjlo8t.dpbs

http://laserman123.jigsy.com/entries/general/analysis-of-the-principle-of-laser-fire-alarm-system