Laser pointer interference gravitational wave detector

Gravitational waves were directly detected for the first time after Einstein predicted the 100th anniversary of gravitational waves. The specific time is September 14, 2015. LIGO’s two probes in Louisiana and Washington state detected the merger of two black holes with 29 and 36 solar masses believed to be 1.3 billion years ago (GW150914 )….

Researchers develop new laser pointer detector

Recently, a group of international researchers developed a new instrument for the laser pointer Interference Gravitational Wave Observatory (LIGO), which can remove quantum noise and expand the detector’s detection range in the universe. This new device called “quantum vacuum squeezer” helped LIGO reduce this confusing quantum crack phenomenon and expand the detection range of the detector by…

How to ensure the accuracy of laser pointer measurement data?

With the development of science and technology, more and more industries need to use laser pointer diameter gauges, such as wire and cable, metal processing industry, rolling mills, laboratories, rubber industry, plastics industry and so on. The single-axis diameter gauge is a small desktop outer diameter testing equipment that can measure the outer diameter quickly, without damage,…

India will build a laser pointer to interfere with gravitational waves

The website of the British “Nature” magazine reported on January 22 that India plans to soon start building its own LIGO (laser pointer Interferometric Gravitational Wave Observatory)-Advanced LIGO (aLIGO), and the site has received final approval. The US$177 million observatory is expected to be completed in 2024 and is expected to increase the sensitivity and accuracy…

Circular beam semiconductor side emitting laser pointer

The semiconductor laser has been widely used since its birth in 1962, but it still has a much criticized shortcoming, that is, a large divergence angle and an elliptical light emission. Usually the vertical half-angle divergence angle is greater than 30°, and the horizontal direction is about 10°, which results in lower beam quality and…

The most efficient nanowire laser pointer in the world

Perovskite materials have the advantages of low cost, simple process and high efficiency, and are commonly used materials for solar panel research. Now, researchers have proved that nanowire laser pointer made from lead halide perovskites are the most efficient lasers known. Topological image of the nanowire (left insert). At room temperature, two different halide nanowire laser emission…

Nanosecond pulse fiber laser pointer for laser welding of dissimilar metal materials

Fiber lasers have excellent applications in industrial marking and engraving. Not only that, fiber laser pointer have a wide pulse width, high peak power, high frequency, and excellent beam quality, which can meet the needs of high-quality industrial processing. Dissimilar metal materials also have excellent performance in welding, mainly used in 3C electronics, new energy and other…

New breakthrough in high-density data storage ultrafast laser pointer

It is reported that laser-based data storage and retrieval technology will increase the storage capacity of traditional optical discs, such as DVDs and Blu-ray discs, without requiring special preparation steps. This scalable technology uses the 3D volume of the optical disc to store information in a multi-level structure, and the ultra-fast laser pointer is used to maintain…

Data writing storage device based on ultrafast laser pointer

Modern life revolves around data, which means that we need new, fast, and energy-saving ways to read and write data on storage devices. With the development of magnetic material all-optical switching (AOS) technology, the optical method of using laser pointer pulses instead of magnets to write data has received considerable attention in the past decade. Although fast…