Perovskite materials undergo structural degradation and phase transition at high temperatures, leading to a decrease in laser performance. Heat dissipation has become a bottleneck that restricts the development of perovskite electrically pumped lasers. Therefore, it is necessary to find an effective heat dissipation method that can quickly export heat from perovskite materials.
Diamond, as a material with ultra-high thermal conductivity, can effectively solve this problem. Diamond can dissipate heat from perovskite lasers in two ways: firstly, as a substrate, it quickly conducts the heat generated by perovskite materials to the outside; The second is to effectively couple the light beam emitted by the perovskite material as a cladding, reducing losses and heating. Diamond can significantly improve the performance and stability of perovskite lasers.
In addition, tight optical binding is achieved by introducing a thin SiO2 interlayer between the nanosheets and the diamond substrate. Benefiting from the diamond substrate, its pump energy density related temperature sensitivity is relatively low (~0.56 ± 0.01 K cm2) μ J-1), this sensitivity is one to two orders of magnitude lower than the sensitivity of previously reported perovskite nanowire lasers on glass substrates. The results confirm that efficient thermal management has been achieved in perovskite lasers using high thermal conductivity diamond substrates.
The application of diamond in perovskite lasers is a cutting-edge research direction, which is expected to bring new breakthroughs and developments to laser technology. Electric pumped perovskite lasers can be applied in fields such as optical communication, optical computing, and optical storage to improve the speed and efficiency of information transmission and processing. They can also be used to make micro laser arrays and photonic integrated devices, achieving the functionality of photonic integrated circuits. In addition, they can also utilize new physical mechanisms such as surface plasmons, exciton polaritons, etc. to achieve low threshold, high efficiency, and high stability laser output.
CSMH focuses on diamond production and research, with a mature diamond product line, including diamond wafers, diamond windows, diamond heat sinks, diamond based heterojunction integrated composite substrates, etc. It can also provide customers with corresponding thermal management solutions. CSMH has world-class diamond production technology, and its products are in high-power semiconductor devices, 5G/6G communication, aerospace, new energy vehicles, radar, etc Solar photovoltaic and many other fields have applications.
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