Substrate Cleaning Threshold for Various Coated Al Alloys Using a Continuous-Wave Laser
نویسندگان
چکیده
In this study, different coatings (gray epoxy primer, white varnish and red alkyd paint) of 7075 aluminum alloy are cleaned with a 500 W continuous-wave (CW) fiber laser. We analyzed the influence laser power density on temperature evolution target surface morphology. Under condition continuous irradiation for 1 s, experimental results indicated that suitable cleaning thresholds primer varnish, as well paint were 177.74, 192.89 147.44 W/mm2. The show threshold thicker three-layer was smaller than single-layer layer, we analyze mechanism phenomenon.
منابع مشابه
Low threshold gain metal coated laser nanoresonators.
We introduce a low refractive index layer between the metal and the gain medium in metal-coated laser resonators and demonstrate that it can significantly reduce the dissipation losses. Analysis of a gain medium waveguide shows that for a given waveguide radius, the low index layer has an optimal thickness for which the lasing threshold gain is minimal. The waveguide analysis is used for the de...
متن کاملContinuous-wave, fourfold upconversion laser
Recent demonstrations 1-5 of room-temperature upconversion lasers have stirred interest in their potential as practical sources of short wavelength radiation for display and data storage applications, as well as for communications and ultrashort pulse generation at visible and ultraviolet wavelengths.6 To date however, little consideration has been given to the relative merits of various fundam...
متن کاملContinuous . . wave trio upconversion laser
The first laser to operate with an output wavelength shorter than that of the excitation was a pulsed erbium laser reported by Johnson and Guggenheim.l Since this early work, a variety of continuous-wave lasers have been reported in which upconversion occurs by different mechanisms, and inversions of upconverted energy levels have been sustained by avalanche processes, 2.3 direct pairpumping,4 ...
متن کاملContinuous-wave, pair-pumped laser.
We report room-temperature operation of what we believe is the first continuous-wave laser that relies exclusively on cooperative upconversion by coupled ion pairs to achieve population inversion.
متن کاملTemporal cleaning of a high-energy fiber-based ultrafast laser using cross-polarized wave generation.
We report the use of cross-polarized wave generation to perform both pulse shortening and temporal cleaning of a high-energy ytterbium-doped fiber-based femtosecond laser system. The nonlinear processes allow both a highly efficient nonlinear conversion of 20% and a large compression ratio of 3.5, with inherently improved coherent and incoherent contrasts. This results in the generation of 37 μ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Photonics
سال: 2021
ISSN: ['2304-6732']
DOI: https://doi.org/10.3390/photonics8090395