A Bridgman growth furnace was modified by adding adiabatic material between two furnace tubes. The appropriate temperature gradient of 10-30 ℃/cm at the growth interface was obtained by adjusting the distance between...A Bridgman growth furnace was modified by adding adiabatic material between two furnace tubes. The appropriate temperature gradient of 10-30 ℃/cm at the growth interface was obtained by adjusting the distance between the two sections and controlling their temperature. The infrared nonlinear optical （NLO） crystal LiInS2 was successfully grown by the accelerated crucible rotation technique （ACRT）. The crystal was characterized by using XRD and transmission microscopy. It is found that the UV-VIS-NIR and Mid-IR transmittances are about 40%.展开更多
We report high-energy tunable 6.5-12 μm ps mid-infrared radiation generation based on OPA pumped using 1064 nm laser in LISe crystal.We simulated the relationship between the idler energy and crystal length.An optimu...We report high-energy tunable 6.5-12 μm ps mid-infrared radiation generation based on OPA pumped using 1064 nm laser in LISe crystal.We simulated the relationship between the idler energy and crystal length.An optimum LISe length of 4 mm was used to enhance the idler energy experimentally.At a pump energy of ~9.4 mJ, energy levels of ~146 and of ~27 μJ are generated at 6.5 μm and 12 μm, respectively.The highest energy of ~205 μJ is achieved at 8.1 μm at a pump energy of ~19 mJ.Finally, the angular and spectral width acceptance are measured.展开更多
基金the NNSFC (No. 50590403, 50325311)the 973 program of China (No. 2004CB619002)
文摘A Bridgman growth furnace was modified by adding adiabatic material between two furnace tubes. The appropriate temperature gradient of 10-30 ℃/cm at the growth interface was obtained by adjusting the distance between the two sections and controlling their temperature. The infrared nonlinear optical （NLO） crystal LiInS2 was successfully grown by the accelerated crucible rotation technique （ACRT）. The crystal was characterized by using XRD and transmission microscopy. It is found that the UV-VIS-NIR and Mid-IR transmittances are about 40%.
文摘We report high-energy tunable 6.5-12 μm ps mid-infrared radiation generation based on OPA pumped using 1064 nm laser in LISe crystal.We simulated the relationship between the idler energy and crystal length.An optimum LISe length of 4 mm was used to enhance the idler energy experimentally.At a pump energy of ~9.4 mJ, energy levels of ~146 and of ~27 μJ are generated at 6.5 μm and 12 μm, respectively.The highest energy of ~205 μJ is achieved at 8.1 μm at a pump energy of ~19 mJ.Finally, the angular and spectral width acceptance are measured.
