Abstract
Spectral, luminescent and laser parameters of Nd3+:Ca3Ga2Ge3O12 (Nd:CGGG) crystals are studied and compared with the corresponding parameters of Nd:YAG crystals. Continuous-wave spatially single-mode lasing in these crystals at a wavelength of 1.064 μm is investigated upon longitudinal diode pumping through an optical fibre and it is shown that the pump geometries being the same, the output power of a Nd:CGGG laser is close to that of a Nd:YAG laser. The effective cross section σ for induced transitions is measured, which is 1.4 × 10-19 cm2 for Nd:CGGG crystals. It is found that the 1.064-μm line of the Nd:CGGG laser is inhomogeneously broadened and has a fine structure of four distinct peaks conforming the spectroscopic data about the existence of four main types of activator Nd3+ ions in Ca3Ga2Ge3O12 crystals. The output power of 700 mW for the absorbed pump power of 2.7 W is obtained for a compact cw solid-state laser with the 1-mm thick active element. It is shown that the thermal distortions of the active element are the main mechanisms limiting the output power of a solid-state Nd:CGGG crystal laser.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
