A KTiOAsO4 Raman laser

Efficient nanosecond stimulated Raman scattering is observed in KTiOAsO4 within an intracavity Raman laser configuration. A diode-end-pumped acousto-optically Q-switched Nd:YAG laser emitting at 1064.2 nm is employed as the pumping source. And efficient generation of the first-Stokes line at 1091.5 nm is observed. With an incident diode power of 8.11 W, a first-Stokes power of 1.38 W is obtained at a pulse repetition rate of 25 kHz, corresponding to a diode-to-Stokes conversion efficiency of 17%. The pulse width is 6.5 ns and the peak power is 8.5 kW. The performance characteristics of the device demonstrate that KTiOAsO4 is competent and reliable for nanosecond Raman lasers.

[1]  H. Eichler,et al.  Highly efficient 1.3-µm second-Stokes PbWO 4 Raman laser , 2003 .

[2]  T. Chyba,et al.  Solid-state barium nitrate Raman laser in the visible region , 1996 .

[3]  Tasoltan T. Basiev,et al.  NONLINEAR OPTICAL PHENOMENA: High-average-power SRS conversion of radiation in a BaWO4 crystal , 2004 .

[4]  W. R. Bosenberg,et al.  Optical parametric frequency conversion properties of KTiOAsO4 , 1994 .

[5]  G. H. Watson.  Polarized Raman spectra of ktioaso4 and isomorphic nonlinear‐optical crystals , 1991 .

[6]  Helen M. Pask,et al.  The design and operation of solid-state Raman lasers , 2003 .

[7]  S. Pearce,et al.  Solid-state Raman laser generating <1 ns, multi-kilohertz pulses at 1096 nm , 2006 .

[8]  Malcolm H. Dunn,et al.  High-power, continuous-wave, singly resonant, intracavity optical parametric oscillator , 1998 .

[9]  Ruyan Guo,et al.  Temperature dependent Raman scattering in KTiOPO4 and KTiOAsO4 single crystals , 1996 .

[10]  K. Lai,et al.  Multiwatt mid-IR output from a Nd:YALO laser pumped intracavity KTA OPO. , 2001, Optics express.

[11]  Helena Jelínková,et al.  Solid state lasers with Raman frequency conversion , 2004 .

[12]  Wenhai Liu,et al.  Volume Holographic Grating Wavelength Stabilized Laser Diodes , 2007, IEEE Journal of Selected Topics in Quantum Electronics.

[13]  R. Powell,et al.  Generation of 1.5-mu m radiation through intracavity solid-state Raman shifting in Ba(NO3)2 nonlinear crystals. , 1995, Optics letters.

[14]  Valentin Petrov,et al.  Efficient continuous-wave and Q-switched operation of a diode-pumped Yb:KLu(WO4)2 laser with self-Raman conversion. , 2005, Optics letters.

[15]  Y. Chen,et al.  Efficient diode-pumped actively Q-switched Nd:YAG/BaWO4 intracavity Raman laser. , 2005, Optics letters.

[16]  Qingpu Wang,et al.  More precise determination of thermal lens focal length for end-pumped solid-state lasers , 2006 .

[17]  Richard Stolzenberger,et al.  Optical properties and ionic conductivity of KTiOAsO4 crystals , 1992 .

[18]  B. Tell,et al.  Raman Effect in Zinc Oxide , 1966 .

[19]  Arkady Major,et al.  Efficient Raman shifting of high-energy picosecond pulses into the eye-safe 1.5-microm spectral region by use of a KGd(WO4)2 crystal. , 2005, Optics letters.

[20]  J. Piper,et al.  Crystalline Raman Lasers , 2007, IEEE Journal of Selected Topics in Quantum Electronics.