Ultra-broadband spectrum laser bird dispeller
A wide-spectrum, bird-repellent technology, used in animal repellents, applications, animal husbandry, etc., can solve problems such as the limited use range of single-wavelength laser bird-repellent devices, achieve good long-term bird-repelling effects, and improve bird-repelling. Efficiency, the effect of expanding the species of bird repellent
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Embodiment 1
[0039] Concrete devices used in this embodiment:
[0040] Laser 1 is all solid state Nd:YVO 4 / LBO532nm picosecond mode-locked laser, laser wavelength 532nm, output power 2W, pulse width 300ps.
[0041] The optical coupling system 2 is a 40× microscope objective lens.
[0042] The nonlinear optical material 3 is a photonic crystal fiber with randomly distributed air holes at a zero-dispersion wavelength of 500 nm, and the length is not greater than 200 mm.
[0043] The optical collimation system 4 is a 20×microscopic objective lens.
[0044] The optical attenuator 5 is an optical filter whose transmittance at 532nm is not more than 2%, and the transmittance of light of other wavelengths within the spectral range of 300-750nm excluding 532nm is 99%.
[0045] The optical beam splitter 6 is a parallel plane beam splitting with an incident angle of 45°, and the ratio p of the transmittance and reflectance of the laser light in the spectral range of 300-750nm is 2%<p≤5%.
[004...
Embodiment 2
[0060] Concrete devices used in this embodiment:
[0061] Laser 1 is Yb-doped 3+ Photonic crystal fiber picosecond mode-locked laser, laser wavelength 1030nm, output power 1W, pulse width 300ps.
[0062] The optical coupling system 2 is a 40× microscope objective lens.
[0063] The nonlinear optical material 3 is a photonic crystal fiber with a double zero dispersion wavelength of 550nm and 1053nm, and the length is not more than 200mm.
[0064] The optical collimation system 4 is a 20×microscopic objective lens.
[0065] The optical attenuator 5 is an optical filter, which is coated with an optical anti-reflection film at 800nm-1030nm, and the transmittance is not more than 1%, and is coated with an optical anti-reflection film at 300-750nm, with a transmittance of 96%.
[0066] The optical beam splitter 6 is a parallel plane beam splitting with an incident angle of 45°, and the ratio p of the transmittance and reflectance of the laser light in the spectral range of 300-75...
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