Suppression of parasitic oscillations in a core-doped ceramic Nd:YAG laser 
by Sm:YAG cladding

Abstract

The onset of parasitic oscillations limits the extraction efficiency and therefore energy scaling of Q-switched lasers. A solid-state laser was end pumped with a fiber-coupled diode laser and operated in q-cw as well as in passively Q-switched operation. For Q-switched operation, we demonstrate the suppression of parasitic oscillations in a core-doped ceramic Nd:YAG laser by Sm:YAG cladding.

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].…”

Energy scaling of passively Q-switched lasers In the Mj-range

“…The fiber tip with 800 µm core diameter was imaged by two lenses into the laser rod, which was mounted in a temperaturecontrolled holder. transversal self lasing at high pump energies [8]. The oscillator had a length of 80mm.…”

>10 kW peak power self-frequency doubling laser

“…Currently, there are two most convenient methods to get a high-quality pulsed green light source. One is the use of active or passively Q-switching (PQS) technology to achieve blue laser pumping Pr 3+ , Sm 3+ , Tb 3+ , Dy 3+ , Ho 3+ , and Er 3+ pulsed lasers [5][6][7][8][9][10]. An active Q-switching Tb:LiYF 4 laser that can directly emit 544 nm was successfully developed, which provided an average power of 445 mW and a peak pulse power of 580 W at a repetition rate of 3 kHz [11].…”