کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1264166 1496819 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nearly diffraction-limited conjugated polymer microlasers utilizing two-dimensional distributed Bragg resonators
ترجمه فارسی عنوان
میکروس لزرهای پلیمری مشتق شده تقریبا پراش با استفاده از رزوناتورهای دوبعدی توزیع شده برق
کلمات کلیدی
میکروکنولوژی، پلیمرهای پرتوهای نور، تفاضل هولوگرافی، لیزرهای عمودی، آرایه لیزری
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
چکیده انگلیسی


• 2D distributed Bragg resonator (DBR) polymer microlasers are demonstrated.
• Facile fabrication of 2D DBR microlasers is shown with dot-matrix holography.
• 2D DBR lasers deliver nearly diffraction-limited emission with a low threshold.
• The working threshold increases by 40-fold when the mirror size reduces to 20 μm.

We report nearly diffraction-limited lasing from the two-dimensional distributed Bragg reflector (DBR) resonator with a conjugated polymer layer as the gain medium. The resonator consists of four Bragg mirrors, which are fabricated by dot-matrix holography. The in-plane optical confinement in this cavity is achieved via two-dimensional Bragg reflections and the vertical confinement is provided through total internal reflection at the slab interface, leading to a three-dimensional confinement of the emitter. Upon optical pumping, the cavity emits nearly diffraction limited laser emission perpendicular to the surface with a threshold of 9 μJ/cm2 and a bandwidth of 0.31 nm which is quite advantageous to its one-dimensional counterpart. Facile fabrication of two-dimensional DBR polymer lasers with different parameters by dot-matrix holography was also demonstrated. It was further found that the cavity Q factor decreases by a factor of two and the laser threshold increases to 0.41 mJ/cm2 when the mirror size decreases to 20 μm. Our results indicate a step towards the application of polymer micro-lasers in the fields of displays and spectroscopic analyzing.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Organic Electronics - Volume 38, November 2016, Pages 238–244
نویسندگان
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