RESUMO
We demonstrate 2.6 µm mid-infrared lasing at room temperature in a planar waveguide structure. Planar waveguides were fabricated using pulsed laser deposition (PLD) by depositing chromium doped zinc selenide thin films on sapphire substrate (Cr2+:ZnSe/sapphire). Highly doped Cr2+:ZnSe/Sapphire thin film sample was also used to demonstrate passive Q-switching of Er:YAG laser operating at 1.645 µm.
Assuntos
Cromo/química , Lasers , Oscilometria/instrumentação , Refratometria/instrumentação , Compostos de Selênio/química , Ressonância de Plasmônio de Superfície/instrumentação , Compostos de Zinco/química , Desenho Assistido por Computador , Desenho de Equipamento , Análise de Falha de Equipamento , Raios InfravermelhosRESUMO
We demonstrate, for the first time, 10 W, Er-fiber laser pumped, pure CW, thermally diffusion doped, polycrystalline Cr(2+):ZnS laser operating at 2380 nm. We also show Littrow-grating, "single-knob", wavelength tuning of the laser spanning 1940-2780 nm spectral range with the maximum output power of 7.4 W near the central wavelength of 2400 nm and above 2 W over 1970-2760 nm wavelength range. The laser performs with 40% real optical- and 43% slope efficiency, and shows no output power roll-off up to the highest available incident pump power of 27 W.
Assuntos
Cromo , Lasers , Refratometria/instrumentação , Sulfetos , Compostos de Zinco , Desenho Assistido por Computador , Desenho de Equipamento , Análise de Falha de Equipamento , Reprodutibilidade dos Testes , Sensibilidade e EspecificidadeRESUMO
We demonstrate CW rapidly-tunable (4.5 microm/s), highpower (150 mW), single-longitudinal-mode (120 MHz) single-crystalline Cr(2+):ZnSe laser; CW widely-tunable (2.12-2.77 microm), multi-watt (2 W over 2.3-2.7 microm), polycrystalline Cr(2+):ZnSe laser; CW multi-watt (6 W, at 2.5 microm), highly efficient (48% real efficiency) polycrystalline Cr(2+):ZnSe laser; CW multi-watt (3 W, at 2.5 microm), highly efficient (41% real efficiency) ultra-compact polycrystalline Cr(2+):ZnSe laser; and CW hot-pressed ceramic Cr(2+):ZnSe laser.
Assuntos
Cromo/química , Lasers de Estado Sólido , Compostos de Selênio/química , Compostos de Zinco/química , Desenho de Equipamento , Análise de Falha de EquipamentoRESUMO
Efficient continuous-wave (cw) lasing of Cr(2+):ZnS and Cr(2+):ZnSe crystals in external hemispherical cavities and in a microchip configuration under Er-fiber-laser pumping at room temperature are reported. The key result is what is believed to be the first successful demonstration of cw Cr(2+):ZnS and Cr(2+):ZnSe microchip lasers with maximum output powers of 63 and 100 mW at 2320 and 2520 nm, with slope efficiencies of 53% and 20%, respectively.
