More Like this

1. Blue-emitting CsI thin films

   https://doi.org/10.1016/j.jlumin.2025.121126  

   Huang, Xuan; Tang, Xiaobing; Wen, Xiyu; Singh, Saurabh; Lu, Y Charles; Yang, Fuqian (May 2025, Journal of Luminescence)
2. Vertical-cavity surface-emitting phase shifter

   https://doi.org/10.1364/OE.497606  

   Almutairi, Dhaifallah; Johnson, Karl; Smolyaninov, Alexei; Grieco, Andrew; Fainman, Yeshaiahu (September 2023, Optics Express)

   This study proposes a novel technique for a 2D beam steering system using hybrid plasmonic phase shifters with a cylindrical configuration in a 2D periodic array suitable for LIDAR applications. A nanoscale VCSEP design facilitates a sub-wavelength spacing between individual phase shifters, yielding an expanded field of view and side lobes suppression. The proposed design includes a highly doped sub-micron silicon pillar covered by a thin layer of nonlinear material and an additional conductive metal layer. Characterization of a single VCSEP demonstrated a Free Spectral Range (FSR) of 53.28 ± 2.5 nm and a transmission variation of 3 dB, with V_πL equal to 0.075 V-mm. 

   more » « less
3. Electrostatic Field Effect Light-Emitting Diode

   https://doi.org/10.1109/JPHOT.2020.2992278  

   Hartensveld, Matthew; Melanson, Bryan; Zhang, Jing (June 2020, IEEE Photonics Journal)
4. Mid-infrared rainbow light-emitting diodes

   https://doi.org/10.1063/5.0129196  

   Muhowski, Aaron J.; Kamboj, Abhilasha; Mansfield, Noah C.; Wasserman, Daniel (December 2022, Applied Physics Letters)

   We demonstrate a room-temperature all-epitaxial guided-mode resonance light-emitting diode operating in the mid-wave infrared. The device comprises a dielectric waveguide with an AlGaAsSb p−i−n diode core, below a layer of grating-patterned GaSb and above a highly doped, and thus, low index, InAsSb layer. Light emitted from the device active region into propagating modes in the waveguide scatters into free space via the GaSb grating, giving rise to spectrally narrow features that shift with emission angle across much of the mid-wave infrared. For collection angles approaching 0°, we are able to obtain linewidths of ∼2.4 meV across the spectral/angular emission of the LED, corresponding to λ/Δλ∼570. Fine control of emission wavelength can be achieved by tuning the applied current, which causes a redshift of approximately 20 nm due to the thermo-optic effect. The presented device has the potential for use in compact, high bandwidth, and low-cost mid-wave infrared sensing applications requiring spectral discrimination. 

   more » « less
5. ORGANIC LIGHT-EMITTING DEVICES WITH QUANTUM WELL STRUCTURES USING CARBAZOLE DERIVATIVE 4CZTPN-PH AS AN EMITTING MATERIAL

   https://doi.org/10.3116/16091833/Ukr.J.Phys.Opt.2025.01009  

   Deva, L; Stakhira, P; Fitio, V; Debata, S; Dev, P; Karaush-Karmazin, N; Kuzyk, N; Yaremchuk, I; Volyniuk, D (January 2025, Ukrainian Journal of Physical Optics)