Guided-wave second harmonics in Nd:YCOB optical waveguides for integrated green lasers

School of Physics, State Key Laboratory of Crystal Materials and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Jinan, China.
Optics Letters (Impact Factor: 3.29). 01/2012; 37(2):244-6. DOI: 10.1364/OL.37.000244
Source: PubMed


We report on guided-wave second-harmonic generations in nonlinear Nd:YCa4O(BO3)3 (Nd:YCOB) optical waveguides that are produced by the low-fluence swift Ar8+ ion irradiation. The guided-wave second harmonics are realized through the frequency doubling and the self-frequency-doubling of the waveguides under the optical pumps at wavelengths of 1064 and 810 nm, respectively. By virtue of the self-frequency-conversion configuration, the Nd:YCOB waveguides are promising candidates as novel, compact, miniature green laser sources.

Download full-text


Available from: Ningning Dong, Jun 17, 2015
9 Reads
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: We report on the fabrication of Nd:GdCOB ridge waveguides by using femtosecond laser micromachining of planar waveguides that were produced by carbon ion irradiation. The guiding properties of the Nd:GdCOB ridge waveguides are investigated. The second harmonic generation (SHG) at 532 nm green laser from ridges in a series of transverse widths is realized. The results show that the optical conversion efficiencies of SHG in the fabricated ridge waveguides are considerably enhanced with respect to the planar waveguide, and the maximum value reaches 11.4% under a pulsed 1064 nm laser pump.
    Optical Materials 09/2012; 34(11-11):1913-1916. DOI:10.1016/j.optmat.2012.05.032 · 1.98 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Optical planar waveguides have been manufactured in Nd:GdVO4 crystal by swift N3+ ions irradiation at fluence of 1.5 × 1014 ions/cm2. A typical “barrier”-style refractive index profile was formed and the light can be well confined in the waveguide region. The modal distribution of the guided modes obtained from numerical calculation has a good agreement with the experimental modal distribution. The measured photoluminescence spectra revealed that the fluorescence properties of the Nd3+ ions have been modified to some extent in the waveguide’s volume. The propagation loss of the planar waveguide can decrease to lower than 1 dB/cm after adequate annealing.
    Optical Materials 12/2012; 35(2):310–313. DOI:10.1016/j.optmat.2012.09.024 · 1.98 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: The known crystal structures of borate compounds with general composition AI 2MIII 2B2O7 (AI: Na, K, Cs, Rb) have been considered. The structures in space groups P63/m, P-31c, P321 and P21/c have been found depending on cation combination. Criterion k = (r(MIII)+r(B)+2r(O))/r(AI) has been formulated and it controls the formation of trigonal K2Al2B2O7 (KABO) type structure. The existence of noncentrosymmetric KABO-type borates is possible over the range of k = 2.7 - 2.06. This range is promising for searching new borate crystals and solid solutions with pronounced nonlinear optical properties.
    Proceedings of SPIE - The International Society for Optical Engineering 01/2013; DOI:10.1117/12.2017099 · 0.20 Impact Factor
Show more

Similar Publications