October 27, At its most basic level, a random laser is precisely what its name implies; random. It's random in the spectrum of light it produces and in the way that light is emitted, making what could be an extremely versatile laser source, nearly useless for most practical applications. So, how do you control some of the randomness to make useful devices? It's a question that's led a team of researchers at The University of New Mexico to a discovery that's taking laser technology to the next level.
The article provides a technical analysis of how the research team, led by CHTM Interim Director Arash Mafi, is able to reliably control these extremely powerful, but previously uncontrollable, lasers. Traditional lasers consist of three main components: an energy source, gain medium and optical cavity. The energy source is provided through a process called 'pumping' and can be supplied through an electrical current or another light source. That energy then passes through the gain medium which contains properties that amplify the light.
The result is a directed, intense beam of light called a laser. Random lasers, by comparison, perform using a pump, a highly-disordered gain medium but no optical cavity. They are extremely useful due to their simplicity and broad spectral features, meaning a single random laser can produce a beam of light containing multiple spectra, a very beneficial property for certain applications like biomedical imaging.
However, given their nature, random lasers are difficult to reliably control due to their multi-directional output and chaotic fluctuation. The UNM team, in collaboration with researchers at Clemson University and the University of California San Diego, has been able to overcome these obstacles in an efficient way - a victory they hope will continue to push the use of random lasers forward.
Researchers are able to achieve these results through the fabrication and use of a unique glass Anderson localizing optical fiber.
The fiber is made of a 'satin quartz', an extremely porous artisan glass that is typically only used to calibrate the machinery that draws fiber optics. When pulled into long rods, the porous material forms dozens of microscopic air channels in each fiber.
Once filled with a gain medium and pumped using a single-colored green laser, the random laser becomes less random and highly controllable, thanks to a phenomenon known as Anderson Localization. Mafi and his research team are some of the leading experts in Anderson Localization.
Inthey published an article on a different device capable of transmitting images using the phenomenon. Moving forward, Mafi says they hope to broaden the spectrum of this new device and make it more efficient, creating a broad spectrum illumination source that can be utilized around the world.
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The physics and applications of random lasers
Your feedback will go directly to Science X editors. Thank you for taking your time to send in your valued opinion to Science X editors.Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: Wiersma Published Physics Nature Physics. Lasing in disordered media presents both theoretical challenges and practical opportunities. View via Publisher. Save to Library. Create Alert. Launch Research Feed.
Share This Paper. Mohammad Suja, S. Bashar, … J. Lasing from quasi-one-dimensional random lattices of multiple resonators. Tiwari, R. Uppu, S. Plasmonic enhancement of coherence in random lasers. Dawes International Conference on Nanoscience and Nanotechnology Figures from this paper. Citation Type. Has PDF. Publication Type. More Filters. Realization of deep ultraviolet random lasing in MgZnO metal-semiconductor-metal devices.
View 1 excerpt, cites background. Research Feed.Silica sand vs play sand
Fluorescence resonance energy transfer FRET in random dye lasers. Silver nanoshells plasmonically controlled random lasing without dielectric spacer. Mid-IR random lasing effect induced by increased impact of disorder in a planar slab.
Half-opened cavity random distributed feedback laser with FBG wavelength variation. View 2 excerpts, cites background. Plasmon-enhanced electrically pumped random lasing in ZnO metal-semiconductor-metal devices. Lasing in a thin layer of luminophor with metal nanoparticles agglomerates. References Publications referenced by this paper. Mode repulsion and mode coupling in random lasers. Spatial confinement of laser light in active random media.Solid-State Random Lasers pp Cite as.
This is a preview of subscription content, log in to check access. ADS Google Scholar. Balachandran, D. Pacheco, and N. Lawandy, Laser action in polymeric gain media containing scattering particles, Appl. Auzel and P. Goldner, Coherent light sources with powder: Stimulated amplification versus super-radiance, J.
Alloys Compounds— : 11—17 CrossRef Google Scholar. Gouedard, D. Husson, C. Sauteret, F. Auzel, and A. Migus, Generation of spatially incoherent short pulses in laser-pumped neodymium stoichiometic crystals and powders, J.
B10 : — Williams, S. Rand, T. Hinklin, and R. Laine, Blue and infrared laser action in strongly scattering Nd:alumina nanopowders. Google Scholar. Williams, B. Bayram, S.Laser is an optical device that generates intense beam of coherent monochromatic light by stimulated emission of radiation.
Laser light is different from an ordinary light. It has various unique properties such as coherence, monochromacity, directionality, and high intensity. Because of these unique properties, lasers are used in various applications. The most significant applications of lasers include:. The most significant applications of lasers include: Lasers in medicine Lasers in communications Lasers in industries Lasers in science and technology Lasers in military Lasers in Medicine Lasers are used for bloodless surgery.
Lasers are used to destroy kidney stones. Lasers are used in cancer diagnosis and therapy. Lasers are used for eye lens curvature corrections. Lasers are used in fiber-optic endoscope to detect ulcers in the intestines. The liver and lung diseases could be treated by using lasers. Lasers are used to study the internal structure of microorganisms and cells.
Lasers are used to produce chemical reactions. Lasers are used to create plasma. Lasers are used to remove tumors successfully. Lasers are used to remove the caries or decayed portion of the teeth. Lasers are used in cosmetic treatments such as acne treatment, cellulite and hair removal.
Lasers in Communications Laser light is used in optical fiber communications to send information over large distances with low loss. Laser light is used in underwater communication networks. Lasers are used in space communication, radars and satellites. Lasers in Industries Lasers are used to cut glass and quartz.
Lasers are used in electronic industries for trimming the components of Integrated Circuits ICs. Lasers are used for heat treatment in the automotive industry. Laser light is used to collect the information about the prefixed prices of various products in shops and business establishments from the bar code printed on the product.
Physics and applications of random lasers
Ultraviolet lasers are used in the semiconductor industries for photolithography. Photolithography is the method used for manufacturing printed circuit board PCB and microprocessor by using ultraviolet light. Lasers are used to drill aerosol nozzles and control orifices within the required precision. Lasers in Science and Technology A laser helps in studying the Brownian motion of particles.
With the help of a helium-neon laser, it was proved that the velocity of light is same in all directions.
With the help of a laser, it is possible to count the number of atoms in a substance. Lasers are used in computers to retrieve stored information from a Compact Disc CD. Lasers are used to measure the pollutant gases and other contaminants of the atmosphere. Lasers helps in determining the rate of rotation of the earth accurately.
Guiding the random laser
Recent developments in the field of micro and nanophotonics have shown that it is possible to make use of the intrinsic disorder in photonic materials to create useful optical structures. An example is that of a random laser, in which laser action is obtained in disordered structures such as powders and porous glasses.
Although these materials are easy to fabricate, it is only recently that researchers have started to fully understand the rich and complex physical processes that take place in amplifying disordered systems. Here, I will give an overview of the various recent results and discuss the physical picture that has now emerged.
I will also discuss possible applications of this new type of disorder-based laser light source. Feng, S. Correlations and fluctuations of coherent wave transmission through disordered media. Koenderink, F. Optical extinction due to intrinsic structural variations of photonic crystals. B 72 Letokhov, V. Generation of light by a scattering medium with negative resonance absorption. Wiersma, D. Light diffusion with gain and random lasers.
E 54— Markushev, V. Powder laser.Jaguar xf central locking not working after battery change
Google Scholar.Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: Cao and B. Redding and M. CaoB. ReddingM.
A random laser is an unconventional laser that utilizes multiple light scattering in a disordered gain medium for optical feedback and confinement. I review the unique characteristic of the random laser and its potential applications in parallel imaging and projection. View on IEEE. Save to Library. Create Alert. Launch Research Feed.
Share This Paper. Top 3 of Citations View All Silver nanoshells plasmonically controlled random lasing without dielectric spacer. Zhou, M. Yuan, … D. Active control of the emission of a 2D optofluidic random laser. Bachelard, X. Noblin, P. Resonance optimization of polychromatic light in disordered structures.
Hongwei Yin, Adenowo Gbadebo, … S. Turitsyn Scientific Reports Figures from this paper. Citation Type. Has PDF. Publication Type. More Filters.Vb6 http post example
Silver nanoshells plasmonically controlled random lasing without dielectric spacer. View 1 excerpt, cites background.5 EXPERIMENTS WITH LASERS THAT WILL BLOW YOUR MIND !!
Research Feed. Cooperative field localization and excitation eigenmodes in disordered metamaterials. View 2 excerpts, cites background. Polarization and gain phenomena in dye-doped polymer micro-lasers.Mercedes 560 sec for sale
Photonic network random lasing in the Anderson localized regime. Disordered zero-index metamaterials based on metal-induced crystallization. References Publications referenced by this paper.Consumers are demanding more customized and attractive label designs, and we expect that to continue next year.
Prior to digital printing, manufacturers relied on smaller individual batch runs to achieve similar levels of personalization found in the market today. We believe that product portfolio will grow even larger in 2017, which will require a greater demand for digitally personalized labels.
To accommodate this shift and embrace cutting-edge digital print technology, FLEXcon has developed new topcoats, which can be coated on their industry recognized components so converters can continue to sell into applications with specifications while utilizing the new digital printers currently available in the market.
Our topcoats have all been fully optimized to take advantage of the latest digital print technology, and are compatible with the top printers in the market. The concept of Big Data is not new and has been around for some time already but it is going to stay and be ever-more important for label converters and packaging producers.
How can we use it for sustainable growth.
Applications of Random Lasers
The amount of data that is available is so huge and its management has never been more important. Our Business Intelligence and Smart Statistics tools will be high in demand over the coming year. Why not start with virtual reality and 3D technology. I don't think it will be long before the benefits of going digital outweigh the costs associated with getting into that market.
While there will always be a place for high production printers within the markets, I think that we will begin to see a lot more small printing companies using digital technology to produce short to medium sized runs. With this increase in the number of small printing companies will come with it an increase in the demand for digital printing solutions (of which there are already many) and digital finishing solutions.
Specifically, I think we will see a move away from knife finishers and a push towards more laser finishing solutions. This shift is something that is already being addressed by companies like Anytron and others who are creating affordable laser finishing options. Jay Dollries, CEO, Innovative Labeling SolutionsBrands are struggling to engage and retain consumers who are increasingly immune to traditional marketing efforts.
Relevancy, speed to market, SKU proliferation and continued consumer demand for customized packaging are a few of the driving forces shaping our predictions for 2017:www. The trend towards smaller run lengths will continue and I expect this will be the year that the flexible packaging market, which has so far been very much in the early stages of digital adoption, to start making serious strides in exploiting the benefits of shorter runs, shorter lead times, customisation, etc.
The label market will continue to expand, with more automation in the workflow to support that growth. Web-to-print will also rise and printers will offer more and more services such as labels, sleeves and packaging all under one roof. The effect of this will see some printers consolidating and growing, whilst smaller print houses may struggle to compete unless they can find a way to add value to their services.
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