The development of high power semiconductor lasers makes it possible for many important applications. These lasers have replaced many traditional technologies and have implemented a new category of products. With an increase of more than 10 times the cost and performance of every ten years, high power semiconductor 10mw laser pointer have undermined the normal operation of the market in an unpredictable way. Although it is difficult to predict future applications accurately, it is very meaningful to review the past thirty years' development process and provide framework for the next ten years' development.

1980s: optical storage and the original small number of applications. Optical storage is the first large application in the semiconductor laser industry. Shortly after Holzer first demonstrated the infrared semiconductor laser, Nick Holonyak of Ge Corp also demonstrated the first visible red laser diode. Twenty years later, the CD was pushed to the market, followed by a light storage market.

The continuous innovation of semiconductor 200mw laser pointer technology has brought about the development of optical storage technology such as digital multifunction optical disk (DVD) and blue optical disk (BD). This is the first big market of semiconductor lasers, but usually moderate power level limits other applications to relatively small niche markets, such as thermal printing, medical applications and selected aviation and defense applications.

1990s: optical networks prevail. In the 1990s, semiconductor lasers became the key to communication networks. Semiconductor lasers are used to transmit signals through the optical fiber network. However, the high power single-mode pump lasers for optical amplifiers are very important for realizing the scale of optical networks and truly supporting the growth of Internet data.

Spectra Diode Labs (SDL), one of the first pioneers of the high power semiconductor laser industry, has a far-reaching impact on the prosperity of the telecommunications industry. SDL was founded in 1983. It was jointly established by the 500mw laser pointer brand Spectra-Physics of the Newport group of America (Spectra-Physics) and Xerox (Xerox). It was listed in 1995 and its market value is about 100 million dollars. Five years later, SDL was sold to JDSU for more than $40 billion during the peak of the telecommunications industry, one of the biggest technology acquisitions in history. Soon after, the telecommunications bubble burst and destroyed trillions of dollars of capital, now regarded as the largest bubble in history.

2000s: laser is a tool. Although the disillusionment of the telecom market bubble is devastating, the huge investment in high-power semiconductor lasers lays a foundation for wider adoption. With the improvement of performance and cost, these lasers have begun to replace traditional gas lasers or other energy conversion sources in a variety of processes.

Semiconductor 50mw laser pointer have become a widely used tool. Industrial applications range from traditional manufacturing processes (such as cutting and welding) to new advanced manufacturing technologies (such as 3D printing metal parts for material increase). Micro manufacturing applications are more diverse, because key products such as smartphones have been commercialized through these lasers. Aerospace and defense applications involve a wide range of key mission applications, and the next generation of targeted energy systems may be included in the future.

https://www.travelblog.org/North-America/United-States/Hawaii/Honokaa/blog-1008742.html

https://michaleorange.wixsite.com/mysite/single-post/2018/01/22/2017-Laser-Technology-Progress

http://htpowlasers.myfreesites.net/laser-technology/laser-write-success-microelectronics-next-revolution

Spider silk is a magical substance than silk. But because of the temporary human can not tame spiders, spider silk industrial production is only a dream for the time being. Moreover, although modern biotechnology has the ability to steal the day, it can not let the spider in addition to any creatures produce spider silk protein. So, the source of industrial spider silk can only rely on "wild" spider. The amount of less do not say, and this "manual" type of production can not control, there is no standard. So even if the collection of these wild spider silk, its production and application is also a problem. So how do you use these spider silk that are not compatible with modern means of production?

Recently, a team of researchers from India claimed to find a solution to this problem. They say that in a suitable environment, a protein in the spider silk can amplify the power of the laser pointer so that the laser gets enough power to cut or weld the spider silk. The principle behind this approach is called "nonlinear multiphoton absorption". In a simple sense, this effect allows two (or more) photons to be absorbed by matter as a photon, and the energy of the "photon" is the sum of the energy of the two (or more) photons. It is non-linear because the energy of the synthetic photon is equal to the square sum of the multi-photon intensity and can not be a fraction or a multiple.

This effect is important for materials that can absorb high energy photons but can not absorb low-energy photons (such as spider silk). Because it can cause the light that passes through the material normally, it can be absorbed by the material effectively, and the material molecules can transition to the highest energy level. At high energy levels, molecules can appear fluorescent, chemical bonds break, recombine, or continue to absorb energy into melting and other changes.

On spider silk, the researchers used a femtosecond green laser pointer (10-15 second length laser beam) to guide the energy to a specific location using the multiphoton absorption effect. They chose femtosecond, rather than the more common "long picosecond" (10-12 seconds), because in the femtosecond laser irradiation, the target site of energy can be stored only in the spider silk, and do not spread to other parts of the damage.

When using femtosecond lasers, the researchers found several wavelengths that allowed spider silk to achieve double, triple, or even quad single photon energy multiphoton absorption. Among them, 80GW (gigawatt) per square centimeter of power is the baseline, any less than the power of the laser can not produce any effect. And 300GW per square centimeter is on the line, in this power and above, the laser will only cut off the spider silk. Of course, this power laser can be used to accurately cut spider silk into various lengths.

As for the blue laser pointer between the two lines, the power can be successfully let the spider silk half melting, the volume slightly expanded lap; in the deviation from the center of the location, but also let the spider silk to bend. Through the control of the irradiation time, the researchers can precisely control the specific degree of bending. At present, they have used spider silk to make a successful spiral, spring, and complex knot.

Early laser vibration welding used in the automotive industry is a combination of laser technology and lightweight components, which can be used to solve the above-mentioned problems without the need for filler. The traditional laser vibration welding, collimated beam through the uniaxial vibration, through the focus lens focused spot with the welding head with the workpiece relative to the movement, the formation of a certain amplitude, frequency and offset of the weld; 2-axis galvanometer System vibration welding is through the control system to form a vibration weld, the need for higher costs.

Unlike the CO2 laser, the laser power used in the UV blue laser pointer panel splitting device is slightly lower and the maximum power 15W can be reached, while the CO2 laser is up to 50W or higher. In addition, our UV laser device parameters are easy to tune. When machining thick plates, you can adjust the laser power to 15W. And when machining flexible materials, you can also reduce the laser power to 1W-3W. When the processing of flexible material or a specific plastic, you can also use the laser scanning, microsecond delay control between each scan to ensure proper cooling of heat affected zone, thus avoiding the one-time energy implementation of huge heat generated in the products above the agglomeration, this heat affected by near control wire protection components.

Based on the traditional three-color laser developed white laser, and photonic crystal fiber laser, in the coherence of a serious lack of loss of many excellent characteristics of the laser, it can not be as an independent, true sense of the laser light source, we can only It is classified as white laser category. When the white laser really have all the characteristics of the 300mw laser pointer, and has the traditional laser does not have the advantages of the characteristics of time, in a wider range of scientific research, production applications play a white laser role.

In recent years, the use of two-color laser field in the air to stimulate the plasma wire to produce strong terahertz radiation method with its high efficiency, has been widespread concern. The microscopic physical mechanism of this method to produce strong terahertz radiation is mainly described by the ionization current model and the nonlinear four-wave mixing model. A large number of previous studies have shown that such terahertz radiation sources are a single-cycle broadband pulse. Such as the realization of the radiation pulse of the parameters (including the radiation angle distribution, carrier envelope phase, pulse energy, etc.) precision control, will be able to fully expand its application space, to play its application value.

The technique involves exposing the sample to intense pulses of the most powerful laser, but the photon energy is much lower than the electron energy emitted from the material. There is a very large electric field associated with such a pulse, which will result in an electron passing through the quantum tunnel from the top of the valence band to the bottom of the electron conduction band, thus creating holes in the electron conduction band. Electrons and holes are driven by the electric field to reach high momentum in the opposite direction. The electric field itself is oscillating, and both the electrons and the holes undergo a reverse and aggregation when the field is transformed.

In this study, a cadmium sulfide (CdS) line with a diameter of 204 nm and a length of 15 μm was used as the core design of the optical cavity (Fig. 1). The high refractive index of the nanowires causes the incident light to have a high reflectivity factor at the end face and be guided by the nanowires. This arrangement forms the Fabry-Burrow cavity, which, when activated by an external light source, forms a laser. The laser wavelength thus formed depends on the refractive index around it. By measuring the wavelength of the most powerful laser output, the refractive index of the liquid immersed in the nanowires can be determined.

There are a variety of methods for surface nanocrystallization of materials. There are a large number of surface nanocrystallization technologies. It is a surface layer which can realize the nano-characteristics by means of laser surface treatment technology and nanometer technology. It can be collectively referred to as laser surface nanocrystallization technology; More generally referred to as laser nano-surface engineering technology, is directly or mainly the use of laser this specific technical means to directly change or add material to change the surface of the solid material is treated, the composition or structure, so that the formation of nano-crystal Grain or a certain nanoparticle composition of the surface layer. Or the use of laser etching, laser embossing, laser hair, laser micro-nano modeling and other means to achieve nano-structure on the surface of the material.

In the 1970s, after the successful development of high-power lasers, blue laser pointer surface treatment technology into the practical application, and then the rapid development, there have been laser quenching (laser phase hardening surface modification technology), laser remelting, laser surface alloying, Laser cladding, laser surface amorphization and laser shock enhancement. These laser surface treatment technology through the surface of the material to form a certain thickness of the treatment layer to improve the mechanical properties of the material surface, metallurgical properties, physical properties, thereby enhancing the parts, the workpiece wear, corrosion resistance, fatigue and other properties. Laser due to high power density, good direction, energy transfer convenience, can be transmitted in a variety of transparent media and other characteristics.

Generally refers to the use of laser remelting, high-energy 300mw laser pointer surface melting and not add any other ingredients to the substrate surface rapid melting and solidification grain refinement, eliminate defects, reach the aim of improving the surface structure. Laser remelting as a kind of surface engineering technology, a large number of researchers have done related research work, pointed out that the research can significantly improve the surface hardness and corrosion resistance of the material and wear properties by laser remelting, but as the surface of nanometer technology is not clearly separate.

http://htpowlasers.mihanblog.com/post/2

https://htpow.deviantart.com/journal/The-Golden-Age-of-Laser-Technology-699324343

http://michale.hamazo.tv/

There is no doubt that whether China have 5000mw Laser weapon, the question is just how much they have.Recently China published a photograph. A laser beam directed into the sky from the ground. It is the Chinese Academy of Sciences photoelectric design and manufacture of TMT laser guide star system test screen. With this picture, a large German media published an article saying: Chinese laser technology are more advanced than the United States. http://www.htpow.com/green-5000mw-laser-pointer-cheap-htpow-high-power-green-laser-pointers-starry-5-in-1-focus- adjustable-p-1004.html Laser weapon is a directed energy weapons, the use of powerful directional laser beam can damage the target or make it ineffective directly. It is the use of burning laser pointer beam intensity carried huge energy to destroy or kill enemy aircraft, missiles, satellites,high-tech personnel and other targets new concept weapons. Nowadays, Russia is a leader of theoretical research , the United States and Israel is a leader in the application of laser weapons, only China quietly. But what is certainly that Chinese laser weapon has matured and will play an increasingly important role in the future battlefield since 30 years of research. http://www.htpow.com/ultra-powerful-laser-pointer-blue-10000mw-class-iv-445nm-p-1028.html In fact, the world's largest laser weapons were developed in the United States, "National Ignition plan" NIF project, which focus the Laser Sight beam 192 in a peanut-sized, equipped with hydrogen target particles. When the energy of 500 terawatt laser light impinges on the target hydrogen containing particles, the particles will produce x-rays, so that a heavy hydrogen atom and tritium atoms to produce fusion, this fusion makes a small amount of material into a tremendous energy - super laser weapon . However,at the development process because of a technical problem can not be reversed, federal officials and congressional officials frustration this will cost $ 3.5 billion to give up,, pioneered the first-ever US national key projects listed could not be completed due to and give up the first column. http://www.htpow.com/laser-beam-dot-sight-htpow-dot-laser-sight-rifle-green-laser-p-1104.html The development of the 100mw Laser Pointer in China is not short of time , while China femtosecond ultrashort laser device as early as 1996 by the Shanghai-ray machine successful development and acceptance, which marks China has entered the laser technology World ranks. At present Chinese blinding laser weapons is indeed unusual, unique show China had only a hand-held laser weapon laser jammer, it can make the enemy or make eye injury dizziness, light beam can hit enemy combatants used electronic equipment blinding. http://www.htpow.com/5-in-1-green-100mw-laser-pointer-523nm-laserpen-shop-kaleidoscopic-laser-pointer-p-1006.html China is satisfied from all solid-state lasers, the laser guide star system enables ground-based telescopes resolution space telescope level, which can observed from the ground of the universe 13 billion light-years of regional scene. I can only say that it is still unique in the world. While the laser is applied to the armsby American , but as a defensive-oriented country,China has already surpassed the United States in the field of application of laser air defense and antimissile defense , to be exact, this is the only reality laser weapon in the world! http://127280.peta2.jp/?&ts=1469154395 http://petfamily.net/detail.php?tid=ZH6Nv

As one of the world's leading military enterprises, the United States Lockhead Martin (Martin Lockheed) has announced this week in the Bothell open production "ATHENA" laser weapon system. ATHENA is the Test High Energy Asset Advanced, referred to as the high energy laser weapon module will become the U.S. military 60 kilowatts in the core of the laser weapon system which is 12 times more powerful than the green 5000mw Laser Pointer . ATHENA can be single operator, which is composed of a number of fiber laser modules. It not only has high flexibility, can be avoided because of some small fault and cause the entire system to get stuck.　 http://www.htpow.com/green-5000mw-laser-pointer-cheap-htpow-high-power-green-laser-pointers-starry-5-in-1-focus- adjustable-p-1004.html In March of this year, the ATHENA laser weapon system had been carried out on the shelling of the pickup truck test. Although only to the power of 30kW, this system is easily kill a truck. http://www.htpow.com/ultra-powerful-laser-pointer-blue-10000mw-class-iv-445nm-p-1028.html Loma, combined with different frequency spectrum beam combining burning laser , other by fiber laser module encountered limitations can be overcome. Because of the active gain medium mainly by some doped with rare earth elements of materials made, such as ytterbium and erbium (erbium) which gets) and Nd (neodymium). Lockheed Martin said modular design means that the laser energy can be freely according to specific tasks demand choice (full power up to 120kw), while the adoption of commercial off the shelf fiber laser components, and can further reduce the cost. Thanks to the flexibility of the fiber burning laser , Athena can through the deployment of hundreds of thousands of meters of fiber to obtain greater gain, and occupation of space is very small, because it can be coiled like a rope. http://www.htpow.com/200mw-green-laser-pointer-pen-532nm-belong-to-cass-llla-p-1003.html Fiber lasers are very durable, and can be used to achieve 50% of the 200mw Laser Pointer , equivalent to the effect of high energy beam of solid laser projection. In addition, the larger the surface to volume ratio, it also means that the system is more easy to cool. The United States Naval Research Department in the near future to carry out a new type of high energy laser weapon system ship test, the output power of up to 150 kilowatts, is the previous ship test of the laser weapon system 5 times. http://www.htpow.com/300mw-green-high-power-laser-pointer-waterproof-adjustable-holster-p-1038.html At present, the Navy's 30 kilowatt laser weapon system prototype is being installed in the "Pang" on the forefront of floating base in the Gulf region to carry out actual combat test, to provide the force commander with low cost precision strike capability. U. S. Army, air force, Navy, Marine Corps are in the development of tactical 300mw Laser Pointer weapon system, "a lot of countries in the world are in the development and deployment of these technologies, not only us, if we can't go to the commanding heights of the ability, our future will be very difficult." US Navy admiral. "The navy is thinking about the future of the fleet, and laser weapons must become a part of the concentration. If we continue to rely on shells or have the power of the projectile, we will soon do not have the ability to self defense, the development of directed energy weapons is very important." http://lasernzh.blogmaster.net/post-the-development-of-laser-weapon-in-china-119080.html http://lasernzh.allmyblog.com/1-if-there-is-a-war-between-america-and-chinawhat-will-russia-do.html