وفّر 5٪ من خلال الاشتراك السنوي في مجرة واحصل على تصفح لا محدود لأفضل محتوى عربي على الإنترنت.

مجرة
هارفارد بزنس ريفيو
إم آي تي تكنولوجي
العلوم للعموم
نفسيتي
ستانفورد للابتكار الاجتماعي
اشترك الآن
اشترك الآن
اشترك

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عذراً، عذرا،أنت مشترك مسبقاً بالنشرة البريدية

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التكنولوجيا

الانبعاث المستحث |  Stimulated emission

22 أبريل 2020


عندما تكون الإلكترونات الموجودة في مستويات طاقة عالية غير مستقرة أكثر من الموجودة في مستويات طاقة منخفضة، يمكن عند ذلك حث تلك الإلكترونات على الهبوط إلى المستويات المنخفضة؛ وذلك بإعطاء هذه الإلكترونات كمية من الطاقة تساوي الفرق بين مستويي الانتقال. وتُطلق هذه الإلكترونات أثناء هبوطها طاقةً تساوي التي امتصتها؛ لكي تنتقل في صورة الفوتون الذي يمثل ضوء الليزر، وتُسمَّى هذه العملية بالانبعاث المستحث لشعاع الليزر، وفيها ينتج شعاع ليزر يتسم بكونه مترابطاً، ويخرج في الاتجاه نفسه كل مرة.


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