Controlled Assembly of Upconverting Nanoparticles for Low-Threshold Microlasers and Their Imaging in Scattering Media
Yawei Liu, Ayelet Teitelboim, Ángel Fernández-Bravo, Kaiyuan Yao, M. Virginia P. Altoé, Shaul Aloni, Chunhua Zhang, Bruce E. Cohen, P. James Schuck, Emory M. Chan
Abstract
-coated microspheres as small as 3 μm, a size at which optical losses had previously prevented such observations. Finally, we demonstrate that the WGM signatures of these upconverting microlasers can be imaged and distinguished through tissue-mimicking phantoms. These advances will enable the fabrication of more efficient upconverting lasers for imaging, sensing, and actuation in optically complex environments.
Topics & Concepts
Lasing thresholdWhispering-gallery waveLaserMaterials sciencePhoton upconversionOptoelectronicsNanotechnologyMicroelectronicsOpticsNanoparticleFabricationWavelengthLuminescenceResonatorPhysicsAlternative medicineMedicinePathologyPhotonic and Optical DevicesAdvanced Fiber Laser TechnologiesOptical Coherence Tomography Applications