The Use of Large Transparent Ceramics in a High Powered, Diode Pumped Solid State Laser

Sm3+-doped Sc2O3 polycrystalline ceramics: Spectroscopic investigation

“…The ceramic techniques enable fabrication of monolithic composite materials, with the core-doped ceramic Nd: YAG surrounded by Sm: YAG cladding. Such monolithic composite rods [7,8] demonstrated the suppression of the parasitic oscillations in diode laser end-pumped Q-switched Nd: YAG lasers, and composite slabs [9]. Recently, accurate spectroscopic data on Sm: YAG ceramics have been also reported [10].…”

Preparation and characterization of transparent Nd:YAG ceramics

“…4. As you can see, the extinction coefficient a at 1064−nm wavelength is 0.32 cm -1 for the best case and near 0.7 cm -1 for the worst case for ceramics prepared in our lab− oratory, whereas for the best samples of ceramics it is lower than 0.005 cm -1 [32,33].…”

“…Two types of ceramics processing were successfully demonstrated: l "wet" method developed by Yanagitani and Ueda group [4][5][6][7][8], l "dry" method developed by group of Ikesue and Taira [1][2][3]9]. The ceramics made of polycrystalline Y 3 Al 4 O 12 [1][2][3][4][5]14,15,32,33], Lu 3 Al 4 O 12 [13], Y 2 O 3 [6,8,16,18,19,21,22], and Y 3 ScAl 4 O 12 [9] doped with neodymium, ytterbium, chro− mium, and erbium were prepared and showed excellent per− formance in experiments. The optical ceramics can be pro− duced till now from the cubic crystals, however, intensive ef− forts are continued to produce ceramics from anisotropic crystals as vanadates or sapphires.…”

“…For the Nd:YAG ceramics of matured technology their benefits in comparison to the crystalline Nd:YAG can be summarized as follows [33]: Several types of efficient diode pumped lasers made of ceramic materials as microchips [23], composite Q−swit− ched lasers [31], mode−locked lasers [13,21,22,24], high power oscillators [25,26,30,32] were demonstrated. Due to unique properties of advanced engineered ceramic Nd:YAG square slabs produced by Konoshima, the highest reported power of 67 kW in 2×diffraction limits was demonstrated in 2006 [32].…”

“…Due to unique properties of advanced engineered ceramic Nd:YAG square slabs produced by Konoshima, the highest reported power of 67 kW in 2×diffraction limits was demonstrated in 2006 [32].…”