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2019 [ 5] Last updated: 3 July 2023. Lannan Neville Eacott[ 1] (born 14 December 1994), better known as LazarBeam, is an Australian YouTuber, professional gamer and Internet personality, known primarily for his video game commentary videos, "comedic riffs" and memes. [ 2]
Nd:YAG laser with lid open showing frequency-doubled 532 nm green light. Nd:YAG laser rod. Nd:YAG ( neodymium-doped yttrium aluminum garnet; Nd:Y3Al5O12) is a crystal that is used as a lasing medium for solid-state lasers. The dopant, neodymium in the +3 oxidation state, Nd (III), typically replaces a small fraction (1%) of the yttrium ions in ...
Laser beam welding ( LBW) is a welding technique used to join pieces of metal or thermoplastics through the use of a laser. The beam provides a concentrated heat source, allowing for narrow, deep welds and high welding rates. The process is frequently used in high volume and precision requiring applications using automation, as in the ...
An excimer laser. An excimer laser, sometimes more correctly called an exciplex laser, is a form of ultraviolet laser which is commonly used in the production of microelectronic devices, semiconductor based integrated circuits or "chips", eye surgery, and micromachining . Since the 1960s, excimer lasers have been widely used in high-resolution ...
The beam of a single transverse mode (gaussian beam) laser eventually diverges at an angle that varies inversely with the beam diameter, as required by diffraction theory. Thus, the "pencil beam" directly generated by a common helium–neon laser would spread out to a size of perhaps 500 kilometers when shone on the Moon (from the distance of ...
Laser beam machining (LBM) is a form of machining that uses heat directed from a laser beam. This process uses thermal energy to remove material from metallic or nonmetallic surfaces. The high frequency of monochromatic light will fall on the surface, thus heating, melting and vaporizing the material due to the impinge of photons (see Coulomb ...
The equation for the divergence of a pure Gaussian TEM 00 unfocused beam propagating through space is given by =, (1) where D 00 is the diameter of the beam waist, and λ is the wavelength. Higher mode beams often start with a larger beam waist, D 0, and/or have a faster divergence Θ 0. In this case Equation (1) becomes
Laser linewidth from high-power high-gain pulsed laser oscillators, comprising line narrowing optics, is a function of the geometrical and dispersive features of the laser cavity. [29] To a first approximation the laser linewidth, in an optimized cavity, is directly proportional to the beam divergence of the emission multiplied by the inverse ...