أرجوكم ساعدوني في حل هذا السؤال ؟؟؟؟؟؟؟؟؟

[alanamede]

what is the conditions to produce two coherent*
beams ,please help

[المتفائلة]

عربي، عربي يالاخو
أنا مو شاطرة بالانجليزي!!!

[ماجستير هندسة ليزر]

السلام عليكم ورحمة الله وبركاته

اخي حتى تكون حزمتين متشاكهتين (two coherent beams ) يجب ان تكون الحزمتين ذات نفس التردد ونفس الاتجاه

condition of coherence:

the same direction and the same phase-in phase-(i.e the same frequency)i

كما موضح في الشكل:

http://www.0sss0.com/up/uploader_files21/CWx00985.jpg

انظر الى الشكل ادناه الذي يوضح موجات غير متشاكهة:

http://www.iraqup.com/uploads/YT6bd-8yI133346.jpg

سلامي

[المهندسه86]

Coherence is the property of wave-like states that enables them to exhibit interference. It is also the parameter that quantifies the quality of the interference (also known as the degree of coherence). It was originally introduced in connection with Young’s double-slit experiment in optics but is now used in any field that involves waves, such as acoustics, electrical engineering, neuroscience, and quantum physics. In interference, at least two wave-like entities are combined and, depending on the relative phase between them, they can add constructively or subtract destructively. The degree of coherence is equal to the interference visibility, a measure of how perfectly the waves can cancel due to destructive interference. The property of coherence is the basis for commercial applications such as holography, the Sagnac gyroscope, radio antenna arrays, optical coherence tomography and telescope interferometers (astronomical optical interferometers and radio telescop
سلامي

[المهندسه86]

اخي اعطيتك شرح اضافي زياده لما طلبت لغرض التوضيح فقط
سلامي

[alanamede]

thank you so much ماجستير هندسة ليزر
مشرفة منتدى فيزياء الليزر > Good bless you for your answer .Thanks again

[جعفر]

ماشاء الله على هاي الردود بتمنى الكو كل التقدم