Wide wavelength tunability and green laser operation of diode-pumped Pr3+:KY3F10.

We report on wide spectral tunability of a quasi-continuous wave Pr(3+):KY(3)F(10) laser under InGaN laser diode excitation at 445 nm. The total tuning range exceeded 100 nm in the visible spectral range on several intervals between 521 nm and 737 nm. The broadest continuously tunable region of almost 50 nm extended from 688 nm to 737 nm. Furthermore we present what is to the best of our knowledge the first demonstration of continuous wave laser operation in Pr(3+):KY(3)F(10) on three transitions in the green spectral region. The highest output power of 121 mW was achieved at an emission wavelength of 554 nm with a slope efficiency of 27%.

[1]  U. Weichmann,et al.  Diode-pumped Pr(3+):KY(3)F(10) red laser. , 2007, Optics letters.

[2]  G. Huber,et al.  Diode pumped laser operation and spectroscopy of Pr3+:LaF3. , 2012, Optics express.

[3]  J. M. Sutherland,et al.  Visible continuous-wave laser transitions in Pr(3+):YLF and femtosecond pulse generation. , 1996, Optics letters.

[4]  J. Nakanishi,et al.  Visible lasers in waterproof fluoro-aluminate glass fibers excited by GaN laser diodes , 2013 .

[5]  M. Diaf,et al.  Red-luminescence analysis of Pr3+ doped fluoride crystals , 2008 .

[6]  Vasiliy Ostroumov,et al.  1 W of 261 nm cw generation in a Pr3+:LiYF4 laser pumped by an optically pumped semiconductor laser at 479 nm , 2008, SPIE LASE.

[7]  Patrice Camy,et al.  Visible laser operation of Pr3+-doped fluoride crystals pumped by a 469 nm blue laser. , 2011, Optics express.

[8]  Z. Cai,et al.  Diode-pumped Pr^3+:LiYF_4 continuous-wave deep red laser at 698 nm , 2013 .

[9]  M. Tonelli,et al.  Room Temperature Cyan Pr3+:BaY2F8 Laser at 495 nm , 2013 .

[10]  Voicu Lupei,et al.  Basic enhancement of the overall optical efficiency of intracavity frequency-doubling devices for the 1 μm continuous-wave Nd :Y3Al5O12 laser emission , 2003 .

[11]  Fumihiko Kannari,et al.  High-power GaN diode-pumped continuous wave Pr 3+ -doped LiYF 4 laser , 2007 .

[12]  W Seelert,et al.  Diode pumping of a continuous-wave Pr3+-doped LiYF4 laser. , 2004, Optics letters.

[13]  Yoshinori Kubota,et al.  Visible-NIR tunable Pr3+-doped fiber laser pumped by a GaN laser diode. , 2009, Optics express.

[14]  R. Moncorgé,et al.  Spectroscopy and cw operation of a 1.85 μm Tm:KY3F10 laser , 2001 .

[15]  G. Huber,et al.  Novel rare earth solid state lasers with emission wavelengths in the visible spectral range , 2013, 2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC.

[16]  H. Jelínková,et al.  Visible cw laser emission of GaN-diode pumped Pr:YAlO3 crystal , 2009 .

[17]  F. Kannari,et al.  High-power GaN diode-pumped continuous wave Pr3+-doped LiYF4 laser , 2007, 2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference.

[18]  Li Shutao,et al.  All-solid-state blue laser pumped Pr:KY3F10-BBO ultraviolet laser at 305 nm , 2012 .

[19]  Günter Huber,et al.  Power scaling of laser diode pumped Pr3+:LiYF4 cw lasers: efficient laser operation at 522.6 nm, 545.9 nm, 607.2 nm, and 639.5 nm. , 2011, Optics letters.

[20]  G. Huber,et al.  Efficient laser operation of Pr3+, Mg2+:SrAl12O19. , 2012, Optics letters.