Relaxation oscillations of the radiation from a 2-μm holmium laser with a Cr,Tm,Ho : YSGG crystal

Numerical Simulation of High-Power Operation of 2 µm Co-doped Tm,Ho Solid-State Lasers

“…In recent years significant progress in understanding the basic phenomena underlying Tm,Ho laser operation as well as in developing high power lasers has been achieved ( Tyminski et al, 1989;French et al, 1992;Petrin et al, 1992;Jani et al, 1991;Jani et al, 1995;Yu et al, 1998;Alpat'ev et al, 1998;Alpat'ev et al, 1993;Barnes et al, 1996;Lee et al, 1996;Rustad & Stenersen, 1996;Bruneau, 1998;Bourdet & Lescroart, 1999;Jackson & King, 1998;Sudesh & Asai, 2003;Sato et al, 2004;Walsh et al 2004;Galzerano et al, 2004;Izawa et al, 2000;Yu et al, 2006;Zhang et al 2006;2008) and recently reviewed by ( Eichhorn, 2008) and (Walsh, 2009). Nevertheless significant effort is still necessary for defining optimized parameters and achieving high lasing efficiency for high power operation associated with significant temperature increase and related effects of pulse energy inhibition and thermal lensing destroying laser operation (Akhmanov et al 1972).…”