An overview of Crylink's 800nm laser
12.
800nm laser
An overview of Crylink's 800nm laser
Description
Ti:sapphire lasers are tunable lasers which
emit red and near-infrared light in the range from 650 to 1100 nanometers,
operating most efficiently at wavelengths near 800 nm.A Ti:sapphire laser is
usually pumped with another laser with a wavelength of 514 to 532
nm.Femtosecond lasers work in pulse mode have short duration and high
instantaneous power, enabling to process materials in very short time,and small
spaces，is appropriate for processing materials.
Feature
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Small thermal region
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High peak power
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Wide tuning range
·
Stable performance
Application
Transparent dielectric material processing
Ti:sapphire crystals emit 800nm laser light
that may be concentrated into materials. Because the temperature around the
focal spot is high, plasma forms, resulting in microburst. Using an
800nm,100fs,0.5J pulse, the Mazur team at Harvard University created
microcavities with a diameter of about 300nm. Because femtosecond lasers have a
narrow temperature zone, they may be utilized to accurately write optical
gratings.
Dual photon polymerization micro-machining
When Ti:sapphire crystals are exposed to
laser beams with wavelengths of 800nm, 100fs, and 20nj that surpass the
absorption threshold of dual photons, polymerization occurs at a portion of the
focus center where energy exceeds the absorption threshold. Three-dimensional
constructions may be created using this method.
Ablating meral materials
Distinct energies of 200fs,800nm laser
beams have different effects on abalting metal materials. Phase transition
occurs initially on the material subsurface under low-energy conditions, and
materials are ablated owing to pressure created by the material subsurface when
energy approaches the threshold. Thermal ablation happens initially on the
material surface under high-energy conditions due to the melting and
vaporization expansion of the surface atmosphere.
Verdict
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