A stable 532-nm green-microchip laser with a single-longitudinal operation is achieved by use of a temperature controller. The output power of as much as 17.2 mW is obtained at a 121 mW pumping power. The long-term power stability of the green laser is better than 0.3% for the measuring time of 4 hours and can be further improved by increasing the control accurate for the temperature.
We have experimentally observed diffractive effects of a supercontinuum laser pulse with a spectral range from 600 to 950 nm. The spectral tilt has been demonstrated, which is in accordance with our numerical results.
We demonstrated a efficient 532-nm microchip laser with a conventional schematic pumped by a single-mode laser diode through a ball lens. An output power as high as 18.7 mW has been achieved for a 121-mW pumping power of the laser diode. We also investigated the temporal dynamic characteristic of the laser by numerically solving a set of rate equations.
Spectral control of a commercial laser diode with a self-pumped phase conjugation (SPPC) feedback from a Ce:BaTiO3 crystal was experimentally investigated. A SPPC reflectivity of as high as 65% was obtained at a 1mW incident power and a 782 nm central wavelength. The laser spectrum strongly depends on the reflectivity and length of the external SPPC cavity. The external reflectivity should be in a range of 0.1 to approximately 0.6% for our experimental setup to obtain a narrowed linewidth.
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