لملخص يعرض هذا البحث قياس ضرر عتبة الليزر لسطح بصري عند معاملات خشونة مختلفة. يتم تحقيق إجراء الدراسة من خلال تصنيع نوعين من ألواح البورسليكات المتوازية الجوانب (Glass Bk7 و SF13). الليزر المستخدم هو الليزر النبضي ND: YAG والوضع الطولي نبضات الليزر TEM00 بعرض النبضة τ = 30 نانو وطول الموجة λ = 1.064 ميكرومتر ، شعاع الليزر يركز باستخدام عدسة F = 30 مم. يتم توجيه شعاع الليزر المركز بواسطة عدسة متقاربة نحو السطح البصري للوحة السطح المتوازية. أخيرًا ، حصلنا على رسم بياني لمعامل الخشونة تم رسمه فيما يتعلق بضرر الحد البصري للسطح البصري ، قبل وبعد معالجة السطح البصري. تمكنا من رفع العتبة بحوالي 15٪ بعد إجراء المعالجة الحرارية للسطح البصري.
ABSTRACT
This paper presents the measurement of the laser Threshold damage of an optical surface at different roughness coefficients. The study procedure is achieved
through the manufacturing of two types of parallel-sided borosilicate plate (Glass Bk7, and SF13).
The Laser used is ND: YAG pulsed laser and the longitudinal mode TEM00 laser pulses with pulse width τ =30ns and wave length λ=1.064μm, the laser
beam is focused using F=30 mm lens. The concentrated laser beam is guided by a converging lens towards the optical surface of the parallel surface plate.
Finally, we obtained a graph of roughness coefficient is drawn in relation the optical Threshold Damage of the optical surface, Before and after processing
the optical surface. We were able to raise the threshold by about 15% after conducting thermal treatment of the optical surface.
The retroreflection phenomenon takes place in all optical and optoelectronical
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The aim of this study is to study the possibilities of obtaining materials with a material
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