“…Coherent 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 past few years, new solid sate lasers were designed to enlarge the panel of wavelengths, for examples, in the yellow range [7,8], or to improve sources that have already been used, as in the blue range [9,10].…”