Browsing by Keywords "Optical gain"

Alloyed heterostructures of CdSexS1-x nanoplatelets with highly tunable optical gain performance

Kelestemur Y.; Dede, D.; Gungor K.; Usanmaz, C. F.; Erdem, O.; Demir, H. V. (American Chemical Society, 2017)

Here, we designed and synthesized alloyed heterostructures of CdSexS1-x nanoplatelets (NPLs) using CdS coating in the lateral and vertical directions for the achievement of highly tunable optical gain performance. By using ...

Amplified Spontaneous Emission and Lasing in Colloidal Nanoplatelets

Guzelturk, B.; Kelestemur, Y.; Olutas, M.; Delikanli, S.; Demir, H. V. (American Chemical Society, 2014-07)

Colloidal nanoplatelets (NPLs) have recently emerged as favorable light-emitting materials, which also show great potential as optical gain media due to their remarkable optical properties. In this work, we systematically ...

High-efficiency optical gain in type-II semiconductor nanocrystals of alloyed colloidal quantum wells

Guzelturk, B.; Kelestemur Y.; Olutas M.; Li, Q.; Lian, T.; Demir, H. V. (American Chemical Society, 2017)

Colloidal nanocrystals having controlled size, tailored shape, and tuned composition have been explored for optical gain and lasing. Among these, nanocrystals having Type-II electronic structure have been introduced toward ...

Liquid-liquid diffusion ‐ assisted crystallization: a fast and versatile approach toward high quality mixed quantum dot ‐ salt crystals

Adam, M.; Wang, Z.; Dubavik, A.; Stachowski, G. M.; Meerbach, C.; Soran-Erdem, Z.; Rengers, C.; Demir, H. V.; Gaponik N.; Eychmuller, A. (Wiley-VCH Verlag, 2015)

Here, a new, fast, and versatile method for the incorporation of colloidal quantum dots (QDs) into ionic matrices enabled by liquid-liquid diffusion is demonstrated. QDs bear a huge potential for numerous applications ...

Low-threshold optical gain and lasing of colloidal nanoplatelets

Kelestemur, Y.; Guzelturk, B.; Olutas, M.; Delikanli, S.; Volkan Demir H. (Institute of Electrical and Electronics Engineers Inc., 2014)

Semiconductor nanocrystals, which are also known as colloidal quantum dots (CQDs), are highly attractive materials for high performance optoelectronic device applications such as lasers. With their size, shape and composition ...

Optical gain and lasing of colloidal semiconductor quantum wells intimately integrated into optical cavities

Sak, Mustafa (Bilkent University, 2019-07)

Colloidal semiconductor quantum wells, also known as nanoplatelets (NPLs), attract an increasingly greater deal of interest as a promising material platform for light-generating applications. The superior optical properties ...

Ultralow-threshold up-converted lasing in oligofluorenes with tailored strong nonlinear absorption

Guzelturk, B.; Kanibolotsky, A.L.; Orofino-Pena, C.; Laurand, N.; Dawson, M.D.; Skabara P.J.; Demir, H. V. (Royal Society of Chemistry, 2015)

Nonlinear optical response in organic semiconductors has been an attractive property for many practical applications. For frequency up-converted lasers, to date, conjugated polymers, fluorescent dyes and small organic ...

Unraveling the ultralow threshold stimulated emission from CdZnS/ZnS quantum dot and enabling high ‐ Q microlasers

Wang Y.; Fong, K. E.; Yang, S.; Ta, V.; Gao, Y.; Wang, Z.; Nalla, V.; Demir, H. V.; Sun, H. (Wiley-VCH Verlag, 2015)

The newly engineered ternary CdZnS/ZnS colloidal quantum dots (CQDs) are found to exhibit remarkably high photoluminescence quantum yield and excellent optical gain properties. However, the underlying mechanisms, which ...