The DIHORSE 50W hand-held laser cleaning machine weighs about 264 pounds. It comes fitted with rolling wheels so you can move it around with ease. The laser beam is passed over the surface until the preferred depth and area have been completely rid of the rust. At low flux, the laser energy from the beam ablates the surface while vaporizing the rust.
However, in the case of the free electron laser, atomic energy levels are not involved; it appears that the operation of this rather exotic device can be explained without reference to quantum mechanics. The actual bandwidth is much narrower than shown; the spectrum is limited by the measuring apparatus. The glow running through the center of the tube is an electric discharge. The center of the spot appears white because the image is overexposed there. A photon with the correct wavelength to be absorbed by a transition can also cause an electron to drop from the higher to the lower level, emitting a new photon.
The report provides an in-depth analysis of growth opportunities, development plans, and threats to the Laser Cutting Machine industry. Infrared lasers with wavelengths longer than about 1.4 micrometers are often referred to as “eye-safe”, because the cornea tends to absorb light at these wavelengths, protecting the retina from damage. Lasers that produce a continuous beam or a series of short pulses can be compared on the basis of their average power. Lasers that produce pulses can also be characterized based on the peak power of each pulse. The peak power of a pulsed laser is many orders of magnitude greater than its average power. A laser differs from other sources of light in that it emits light which is coherent.
When cleaning the dust on the aluminum alloy, the cleaning efficiency of the MOPA pulsed fiber laser is 2.77 m2/h, which is 7.7X the cleaning efficiency by a CW fiber laser (0.36 m2/h). When cleaning the dust on the carbon steel, the cleaning efficiency of the MOPA pulsed fiber laser is 1.06 m2/h, which is 3.5X the cleaning efficiency of the CW fiber laser (0.3 m2/h). Handling and disposal of hazardous chemical solvents is eliminated by laser cleaning. The reduction in costs of consumable solvents and the expensive requirements for post process treatment and disposal of these chemicals are not a factor for laser cleaning, making it both the environmentally preferred and lowest cost solution.
These devices can generate high power outputs with good beam quality, wavelength-tunable narrow-linewidth radiation, or ultrashort laser pulses. Solid-state lasers or laser amplifiers where the light is guided due to the total internal reflection in a single mode optical fiber are instead called fiber lasers. Guiding of light allows extremely long gain regions providing good cooling conditions; fibers have high surface area to volume ratio which allows efficient cooling.