Results 211 to 220 of about 36,694 (225)
Some of the next articles are maybe not open access.
Video-rate upconversion display from optimized lanthanide ion doped upconversion nanoparticles
Nanoscale, 2020A method for video-rate display with optimized single UCNP brightness by integrating the full emission intensity over excitation time and lifetime.
Laixu Gao +9 more
openaire +2 more sources
Applied Optics, 1972
A review is given of the properties of birefringently phase-matched parametric upconversion using proustite as the nonlinear material. Photon conversion efficiency, field-of-view limitations, spectral acceptance bandwidths, and resolution are discussed in terms of the upconversion of radiation from the 10-mu region to wavelengths shorter than 1 mu. The
openaire +2 more sources
A review is given of the properties of birefringently phase-matched parametric upconversion using proustite as the nonlinear material. Photon conversion efficiency, field-of-view limitations, spectral acceptance bandwidths, and resolution are discussed in terms of the upconversion of radiation from the 10-mu region to wavelengths shorter than 1 mu. The
openaire +2 more sources
Upconversion in laser materials and the upconversion laser
Optical Society of America Annual Meeting, 1990Upconversion, a process in which two low-energy excitations combine to yield one excitation at the sum energy, occurs in most solid-state laser materials. The effect is particularly strong when the doping concentrations are high and when the excited-state level populations are high.
openaire +1 more source
Nonlinear upconversion interferometry
2005 Quantum Electronics and Laser Science Conference, 2005We experimentally demonstrate the phase coherence of the upconversion process by upconverting time-bin states produced using two unbalanced Michelson interferometers.
A.P. VanDevender, P.G. Kwiat
openaire +1 more source
Orthogonal Upconversion Luminescence from Core/Shell-Structured Upconversion Nanophosphors
ECS Meeting AbstractsUpconversion nanophosphors (UCNPs) are lanthanide ion-doped nanocrystals that exhibit anti-Stokes shift luminescence. Typically, UCNPs such as NaYF4:Yb,Er and NaYF4:Yb,Tm emit green and blue light under 980 nm near-infrared (NIR) light excitation. The emission color of lanthanide ion-doped UCNPs depends on the dopant ions in the host nanocrystals ...
Ho Seong Jang +3 more
openaire +1 more source
Experimental Studies of Upconversion Laser Materials and Upconversion Lasers
1992Results will be presented of our spectrocopic measurements on Er:YLi:F4 and Er:BaY2F8. These materials have now been employed to make red, green and blue lasers that are pumped in the infrared. An output power 0.5 W has been measured at 551 nm with a 14% slope efficiency.
openaire +1 more source