Chiral Quasi Bound States in the Continuum for High-Purity Circularly Polarized Light Source Scientists demonstrate high-purity, highly directional, and high-Q circularly polarized light source from spontaneous emission to laser. An ultra-compact circularly polarized light source is a crucial co
Chiral Quasi Bound States in the Continuum for High-Purity Circularly Polarized Light Source
Disadvantages of conventional approaches for circularly polarized photoluminescence include incoherent broadband emission, limited DOP, and large radiating angles. Their practical applications are restricted by low efficiency and energy waste as well as undesired handedness and emission directions. Chiral microlasers can have large DOPs and directional output, but only in specific power ranges. Most importantly, their subthreshold performances drop significantly.
At the C points, incident light with one circular polarization state can be coupled into the nanostructures and produce dramatically enhanced local electromagnetic fields. The other polarization state is decoupled and almost perfectly transmit. Such characteristics are well known but rarely applied to light emissions. “This is mainly because the C points usually deviate from the bottom of band. They have relatively low Q factor and cannot be excited for lasing actions,” says Zhang.
Indonesia Berita Terbaru, Indonesia Berita utama
Similar News:Anda juga dapat membaca berita serupa dengan ini yang kami kumpulkan dari sumber berita lain.
Study: Earth Has Another Tiny Moon That Broke Off from the Big OneIn a new study, scientists say they found evidence that the quasi-Moon is an ancient fragment of the Earth’s primary Moon.
Baca lebih lajut »
EPA Hits Two More Diesel Tuners With $10 Million Fine For Defeat DevicesThe EPA's crackdown on diesel emissions defeat devices has come to Michigan.
Baca lebih lajut »
Riva Just Unveiled Its First All-Electric Day BoatSame classic style but powered by emissions-free batteries.
Baca lebih lajut »
EPA Hits Two More Diesel Tuners With $10 Million Fine For Defeat DevicesThe EPA's crackdown on diesel emissions defeat devices has come to Michigan.
Baca lebih lajut »
Nextdoor nudges users not to argue with neighbors about midterm electionsThe neighborhood-based social network Nextdoor is taking action to try to calm the polarizing 2022 midterm elections by encouraging users to avoid angry arguments.
Baca lebih lajut »