title: Cavity-dumped 2.70 microm erbium laser using optomechanical shutter.
abstract: A cavity-dumped 2.70 microm erbium laser with a frustrated total internal reflection (FTIR) shutter was investigated and compared with a Q-switched erbium laser using the FTIR shutter. The Q-switched and the cavity-dumped 2.70 microm laser outputs were obtained with a dichroic coated mirror with high reflectance at 2.70 microm and high transmittance at 2.79 microm. For the Q-switched operation, a maximum peak power of 33.5 kW was achieved, and its pulse width was 1.3 mus. For the cavity-dumped operation, the laser pulse energy was optimized by changing the switching time of the FTIR shutter. When the pulse width is reduced to 210 ns, the peak power increases to 154 kW.
authors.affiliation: Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea.
authors.forename: Young Ho
authors.initials: YH
authors.lastname: Park
authors.forename: Dong
authors.initials: D
authors.lastname: Won Lee
authors.forename: Hong Jin
authors.initials: HJ
authors.lastname: Kong
authors.forename: Yeong Sik
authors.initials: YS
authors.lastname: Kim
mesh_terms: D000042:Absorption; D004867:Equipment Design; D004871:Erbium / Q000737:chemistry*; D053685:Laser Therapy / Q000295:instrumentation* / Q000379:methods*; D007834:Lasers; D055096:Optical Devices; D013696:Temperature
chemical_list: D004871:Erbium