Er:YAG Laser
Because the water has a strong absorption band in the region with wavelength
around 3000 nm, an Er:YAG laser whose fundamental wavelength is 2940 nm has the ideal wavelenght to partially separate the plant cuticle and wax layer without needing to focus the laser beam.
Laser specifications
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Solid-state
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Er:YAG
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Pulse duration 200 µs
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Pulse energy 100-600 mJ
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Wavelength 2094 nm
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Repetition rate 10 Hz
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LCD screen



Example of laser exfoliation to improve fluorescent glucose absorption
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Images of citrus leaves taken two hours after fluorescent glucose application:
(a) no laser treatment (b) laser-treated leaf c) magnification of the leaf surface after treatment

More Information
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