“…The disordered nature of the disordered crystal causes an inhomogeneous broadening of their emission spectra, which is beneficial to generating ultrashort pulses. Recently, continuous-wave (CW), passively Q-switched, and mode-locked operation of the disordered crystals, such as Nd:CNGG [10][11][12][13][14], Nd:CLNGG [15][16][17][18], Nd:GAGG [19][20][21], Nd:CaYAlO 4 [22], Nd:Ba(Mg,Zr,Ta)O 3 [23], and Nd:CTGG [24] have been researched due to their smaller stimulated emission cross section and broader emission band. With Y 3+ ions introduced in the disordered crystal Nd:GSGG, another disordered crystal Nd:GYSGG was generated.…”