In 1960, Maiman’s first demonstration of the ruby laser initiated the beginning of the laser era. Solid-state lasers still comprise one of the most rapidly developing branches of laser science and has improved amazingly during last six decades while the gain media with good characteristics is essential for realizing a highly efficient solid-state laser.
Click here for original story, Scientists demonstrate new wavelength shift with diode-pumped continuous-wave Yb:CALGO laser
Source: Phys.org