Laser oscillation in yellow and blue spectral rangein Dy ³⁺ :ZBLAN

Optical spectra of Dy3+ in KY3F10 and LiLuF4 crystalline fibers

“…Oxide and fluoride lattices activated with Dy 3+ present intense luminescence bands in the blue and yellow spectral regions, which make them attractive for applications in the phosphor and solid-state laser technologies [1,2]. The device potentialities of these materials strongly depend on efficiencies of the two involved emission channels, both originating in the 4 F 9/2 excited level.…”

575 nm laser oscillation in Dy3+-doped waterproof fluoro-aluminate glass fiber pumped by violet GaN laser diodes

“…[15] The trivalent dysprosium ion (Dy 3+ ) is a very attractive yellow source (575-nm) for visible solid-state lasers. [16] Limpert et al [6] demonstrated a yellow laser oscillation in Dy 3+ -doped ZBLAN fiber excited by Ar ion laser at 457-nm because fluoride materials show lower phonon energy than the oxide ones; therefore, the luminescent intensity is higher without multiphonon relaxation.…”

“…Recently, many research groups are studying on visible lasers because the light sources are widely applicable for medicine, biology, metrology, optical storage, and display technology [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Several techniques for visible laser generation are shown in Fig.1.…”

Low‐wavelength emission of Nd‐doped lasers

“…From a more general point of view, let us recall that the laser emission is always higher than the pump wavelength (except for up-conversion lasers, which are generally not easy to operate because of complex energy-level schemes, as Dy:ZBLAN, for example [28]). This means that it should be possible to operate below 900 nm with pumping at 800 nm and to obtain blue emission below 450 nm by a simple process of frequency doubling.…”