Whispering Gallery Mode Laser from Carbon Dot-NaCl Hybrid Crystals

ACS Applied Materials & Interfaces
Hongzhen LiuDongxu Zhao

Abstract

Carbon dot (CD)-NaCl hybrid crystals are obtained by incorporating the CDs into NaCl matrix through a simple process. The embedded CDs have added the luminescence centers into NaCl, and as a result, the hybrid crystals present the fluorescence centered at 510 nm under the illumination of 365 nm light. Meanwhile, the phosphorescence with an average lifetime of 314 ms is achieved after the 365 nm light was turned off. Furthermore, optical gain and lasing phenomenon has been observed from hybrid crystals. When the pump power is low, a weak spontaneous emission can be observed from the hybrid crystal, whereas the lasing action was observed under high pump power. The lasing threshold is found to be 0.08 mW and corresponding Q factor is calculated to be 447. The tiny cubic crystal in hybrid crystals offers the whispering gallery mode (WGM) resonant cavity for lasing emission. That has provided a new approach for realizing lasing materials.

References

Jun 15, 2006·Journal of the American Chemical Society·Ya-Ping SunSu-Yuan Xie
Apr 27, 2010·ACS Nano·Daniel J GargasPeidong Yang
May 13, 2010·Angewandte Chemie·Haitao LiShuit-Tong Lee
Aug 6, 2010·Angewandte Chemie·Sheila N Baker, Gary A Baker
Feb 7, 2012·Chemical Communications : Chem Comm·Xin GuoSu Chen
May 21, 2013·Chemical Communications : Chem Comm·Yehao DengDezhen Shen
Nov 20, 2013·ACS Nano·Xiaoyu ZhangAndrey L Rogach
Jun 4, 2015·Chemical Communications : Chem Comm·Sanjoy Mukherjee, Pakkirisamy Thilagar

❮ Previous
Next ❯

Citations

Jan 12, 2021·Journal of Colloid and Interface Science·Yingfang TaoYuhua Wang
Feb 10, 2021·Chemistry, an Asian Journal·Swayam PrakashAshok Kumar Mishra
Feb 28, 2021·Light, Science & Applications·Nikita ToropovFrank Vollmer
Sep 23, 2021·Angewandte Chemie·Yongqiang ZhangSiyu Lu

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.