Study On Laser Protection Performance Based On Lead Phthalocyanine And C₆₀

The laser protection technology based on non-linear absorption is an effective means to deal with the continuous development of laser weapon.Lead Phthalocyanine and C₆₀ are typical anti-saturating materials,which are widely studied due to the wide protection band,low clamp output value and fast response time.However,with the rapid development of wide-band tunable laser weapons,the ability of a single nonlinear mechanism is limited.It can not significantly weaken the laser energy,so that it reaches the human eye or optical components to accept the degree.Therefore,this paper carried out the double-grating organic solution based on grating diffraction and nonlinear absorption(Lead Phthalocyanine and C₆₀)optical limiting study.The main work of this paper is as follows:?1?The change of the refractive index of the calorific value of different solutions was studied by Matlab and the change in the refractive index of the heat of the organic solution such as xylene,chloroform and carbon disulfide was compared to select the appropriate solution as the solvent of Lead Phthalocyanine and C₆₀.The optical limiting properties of Lead Phthalocyanine and C₆₀ solution were studied by using reverse saturable absorption theory.The laser protection effects of Lead Phthalocyanine and C₆₀ solution of 5mm,10 mm and 15 mm thickness were compared at 1.5?10-3,3.5?10-3,5.5?10-3 ? 7.5?10-3M.?2?According to the scalar diffraction theory,the diffraction efficiency of zero-order light is studied by different groove gratings.The groove parameters of triangular,rectangular and sinusoidal gratings are designed.Then,the optical limiting properties of the organic gratings were calculated by using the designed grating and the corresponding solution.?3?The protective properties of Lead Phthalocyanine solution,C₆₀ solution,Lead Phthalocyanine and C₆₀ mixed solution at 532 nm and 1064 nm wavelengths were studied by experimental methods.An optical limiter was designed using Thorlabs' near-infrared transmission gratings and the optical limiting device was designed to study the optical limiting properties of the two-grating photomultiplier with Lead Phthalocyanine and C₆₀ mixed solution.