Optical amplification in NaYF₄:Nd nanoparticle dispersed solution with gain

Abstract

We present the first observation of optical amplification around ∼ 1 μm taking place in carbon tetrachloride solution of Nd3+ doped crystal nanoparticle synthesized with solvo-thermal route. Excited with a fiber-coupled 808-nm laser diode, Nd3+:NaYF4 nanoparticle dispersed solution exhibited strong near-infrared emission by the 4F3/2 – 4I11/2 transition of Nd3+ ions. Optical gain (0.13 dB/cm) around 1064 nm in the solution has been observed with the pump power of 2.1 W. The decrease of optical gain under intense pumping is not observed.

NIR luminescent nanomaterials for biomedical imaging

“…Thanks to the well-developed synthesis of UCNPs, uniform and monodispersed NaR-eF 4 :Nd 3+ NPs have been obtained and have attracted more and more attention in recent years. [126][127][128] In 2012, Prasad et al reported highly efficient NaGdF 4 :Nd 3+ @NaGdF 4 for NIR-NIR downconversion biomedical imaging; 129 unlike LaF 3 :Nd 3+ , these novel DCNPs benet from controllable morphology: even $3 nm uniform NaGdF 4 shells have been successful synthesized. 130 Recently, some attempts have been made to explore the downconversion optical property of the traditional UCNPs.…”

Synthesis of β-Phase NaYF4:Yb,Er Upconversion Nanocrystals and Nanorods by Hot-Injection of Small Particles of the α-Phase

“…During the last years, a large number of research papers was pub-lished on the synthesis of NaREF 4 nanocrystals (RE = rare-earth), since NaREF 4 and LiREF 4 are attractive host lattices for a variety of functional optical materials such as upconversion phosphors, [6][7][8][9][10][11][12][13][14] quantum-cutting phosphors, [15][16][17][18][19] laser materials, [20,21] and materials for solar cell applications [22][23][24][25][26]. A variety of synthetic methods has been described for producing solvent-dispersible sodium rare-earth tetrafluoride nanocrystals with controlled size, shape and capping ligand, including thermal decomposition, [7,[27][28][29][30][31][32] co-precipitation, [6,11,[33][34][35][36][37][38][39][40] or solvothermal methods [41][42][43][44][45][46][47]…”

Photoluminescence and structural properties of Ca3Y(VO4)3:RE3+ (=Sm3+, Ho3+ and Tm3+) powder phosphors for tri-colors

“…Many RE elements have been recognized to hold tremendous potential in the area of optoelectronic and photonic applications, ranging from solid-state lasers, phosphors for color lamps and displays to optical fiber telecommunications [10][11][12]. These so called RE elements have a partially filled inner (4f n ) shell shielded from its surroundings by completely filled outer (5s 2 and 5p 6 ) orbitals.…”