Method for producing phase type photon sieve based on HSQ (Hexadecimal Sequential) process
A photon sieve and phase-type technology, which is applied in the direction of exposure devices, optics, and optical components in photolithography, can solve problems such as difficulty in ensuring flatness, high cost of use, and impact on product quality, so as to improve the limit resolution and reduce the production cost. cost, effect of high resolution
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[0047] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0048] Such as image 3 As shown, the phase-type photonic sieve used in the present invention consists of a quartz substrate, a metal chromium film plated on the quartz substrate, and planar light-transmitting holes and raised light-transmitting holes randomly distributed on the metal chromium film. Wherein: the diameter of the quartz substrate is 4 inches, and the thickness is 3mm; the thickness of the metal chromium film plated on the quartz substrate is about 60nm. The design parameters are: photon sieve diameter 100mm, design wavelength 355nm, focal length 0.939m, outermost ring hole diameter 5μm, ring number 3000 rings, characteristic size 3.33μm.
[0049] The randomly distributed light-transmitting small holes are ...
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