New data on investigation of novel laser ceramic on the base of cubic scandium sesquioxide: two-band tunable CW generation of Yb³⁺:Sc₂O₃ with laser-diode pumping and the dispersion of refractive index in the visible and near-IR of undoped Sc₂O₃

Abstract

Abstract:We report on the first achievement of tunable twoband "one-micron" CW oscillation in the 2 F 5/2 → 2 F 7/2 channel of Yb 3+ activator ions in Sc 2 O 3 ceramics with CW laserdiode pumping, as well as on results of precise measurement of the refractive index and its dispersion in spectral range 0.365 − 2.325 µm and full transmission spectra of undoped Sc2O3 ceramics fabricated by the VSN method.

Comparative study the effect of Yb concentrations on laser characteristics of Yb:YAG ceramics and crystals

“…Rare earths ions doped Lu 2 O 3 , Sc 2 O 3 , and Y 2 O 3 oxides ceramics have been developed and their mechanical and optical properties are reported recently [20][21][22][23]. New nonlinear laser effects and Raman induced Stokes and anti-Stokes lasing effects were observed in these ceramics with excellent optical properties.…”

Wide wavelength-tuning of a double-clad Yb3+-doped fiber laser based on a fiber Bragg grating array

“…In these fiber lasers, wavelength tuning can be obtained using external bulk elements such as diffraction gratings and mirrors, or using all-fiber components such as fiber Bragg gratings (FBG's). In addition, Yb 3+ -doped fiber lasers can be used as pump sources for Raman generation [6] and they have even been considered as a suitable medium for laser tuning in novel ceramic nanocrystalline materials, although with very limited results in terms of the tuning range obtained [7,8]. Furthermore, non-linear gain in a co-doping scheme to obtain multi-wavelength lasing has recently been proposed [9].…”

Diode-pumped passively mode-locked Yb3+-doped yttrium lanthanum oxide ceramic laser

“…Ytterbiumdoped double clad fiber lasers can offer an excellent combination of high power laser output and good spatial beam quality [21][22][23][24]. Recently, polycrystalline ceramic laser materials have attracted considerable attention because of their favorable characteristics compared with single crystals, such as easy fabrication, inexpensive, mass producible, high doping concentration and multilayer or multifunctional structure [25,26] [29]. In this letter, we demonstrate, for the first time to our knowledge, a diode-pumped passively modelocked Yb:(Y 1−x La x ) 2 O 3 (x = 0.1) ceramic laser, generating 174-ps pulses with an average power of 162 mW.…”