Laser emission of a Nd-doped mixed tellurite and zinc oxide glass

Abstract

The present work reports the luminescence properties and the laser operation of a Nd 3 -doped (TeO 2 -ZnO) bulk tellurite glass. The spectroscopic data are analyzed within the framework of the Judd-Ofelt formalism and the results are used in conjunction with fluorescence lifetime and emission measurements to derive values for the quantum efficiency and the stimulated emission cross section of the considered 4 F 3∕2 → 4 I 11∕2 infrared laser transition around 1062.5 μm. Continuous-wave laser action is achieved for the first time with this bulk tellurite glass by pumping the sample inside a standard two-mirror laser cavity with different output couplers. A low-threshold pump power of 8 mW associated with a laser slope efficiency of 21% could be obtained for an output coupler transmission of 2.7%.

Recent advances in lanthanide spectroscopy in Brazil

“…Other investigations on the luminescence properties of lanthanide-based systems with NPs, nanorods or systems assembled using sol-gel techniques have been reported in the literature [17,22,27,33,34,38,40,43,45,49,50,60,61,67,73,78,82,88,93,107,[127][128][129]133,136,140,142,143,149,163,[169][170][171]176,178,201,211,212,214,[235][236][237][238][239][240][241][242][243][244][245]…”

Lasing effects in new Nd3+-doped TeO2–Nb2O5–WO3 bulk glasses

“…Papers related to tellurite bulk lasers [14][15][16][17][18][19][20][21][22][23][24][25][26][27] can be sorted in different categories, depending on the nature of the rare earth ions incorporated into the tellurite matrix in order to access a variety of laser emission lines or depending on the type of laser cavity (cavity with sample placed normally to the laser beam, cavity with sample placed at the Brewster angle), etc. The easiest way to review all these references remains to classify them into three categories, based on the nature of the rare earth ions incorporated: -The first category corresponds to papers dealing with Nd 3+ -doped tellurite glass bulk lasers [14][15][16][17][18][19][20][21], where the laser emission line is $1065 nm (only one exception relates about some laser emission at 1.37 lm).…”

“…The easiest way to review all these references remains to classify them into three categories, based on the nature of the rare earth ions incorporated: -The first category corresponds to papers dealing with Nd 3+ -doped tellurite glass bulk lasers [14][15][16][17][18][19][20][21], where the laser emission line is $1065 nm (only one exception relates about some laser emission at 1.37 lm).…”

“…Tellurite lasers can be found under diverse forms: as fiber lasers [11][12], as microcavity lasers such as microspheres, microdisks and rings, which are well documented by He et al [13], or finally as bulk lasers [14][15][16][17][18][19][20][21][22][23][24][25][26][27]. As we are only interested in the last type of lasers, we are going to review the literature treating specifically about tellurite bulk lasers.…”

Effect of Neodymium Nanoparticles on Elastic Properties of Zinc-Tellurite Glass System

“…Such property of Nd compounds makes them suitable for applications in surface catalytic systems, photonics, and advanced NP-based materials and protective coatings [5,6]. Neodymium doped tellurite glasses are suitable candidates for the development of optical fibers and optical amplifiers, waveguide lasers, and color display devices [7][8][9].…”