| 摘要 |
FIELD: physics.SUBSTANCE: solid-state upconversion laser includes an upconversion laser medium placed in an optical resonator, and a pumping device which includes two semiconductor radiation sources at wavelengths ?1 and ?2 and a fibre module arranged such that optical outputs of both pumping radiation sources are interfaced with the fibre module, and the focusing system is achromatic at wavelengths ?1 and ?2 and is arranged such that the output of the fibre module is interfaced through it with the upconversion laser medium.EFFECT: homogenisation and high spatial concentration of pumping radiation.4 cl, 3 dwg |
