303.5 nm cw Pr:BYF–BBO laser emission under 447 nm all-solid-state Nd:GdVO₄–BiBO blue laser pumping

Abstract

An all-solid-state blue laser-pumped Pr:BaY 2 F 5 (Pr:BYF) laser at 607 nm has been demonstrated. With an incident 447 nm pump power of 1.04 W, the maximum orange output power was 337 mW. Moreover, intracavity second-harmonic generation (SHG) has also been achieved with a maximum UV power of 76 mW by using a β-BaB 2 O 4 (BBO) nonlinear crystal. To the best of our knowledge, this is the first report on continuous-wave (cw) UV generation by an intracavity frequency doubling Pr:BYF laser.

Diode-pumped quasi-three-level Nd:GdV O4–Nd:YAG sum-frequency laser at 464 nm

“…Coherent continuous-wave (cw) light sources in the visible region are important for a number of scientific and technical applications including metrology, remote sensing, biotechnology, communications and display technology [1][2][3][4][5][6]. In the past few years, new solid state lasers have been designed to enlarge the choice of wavelengths, for example, in the yellow range [7][8][9][10], or to improve sources that have already been used, as in the blue range [11][12][13][14]. Lasers in the blue spectral region are of special interest for high-density optical storage, laser-based display devices and Raman spectroscopy.…”

“…One approach is to design lasers with crystals doped with ions directly emitting in the blue, such as Dy 3+ [15]. The other approach is to develop lasers emitting at the lowest wavelength possible in the near-infrared [16][17][18][19] and to perform nonlinear conversion. Classical wavelengths of frequency doubled solid-state blue lasers are 473 nm (Nd:YAG laser) [20], 457 nm (Nd:YVO 4 laser) [21], 456 nm (Nd:GdVO 4 laser) [22] and 458 nm (Nd:LuVO 4 laser) [23].…”