??????????????????????????????????????????So this type of attain medium need to have a attain bandwidth sufficiently wide to amplify those frequencies. An illustration of an appropriate product is titanium-doped, artificially grown sapphire (Ti:sapphire), which has a very wide achieve bandwidth and can So generate pulses of only some femtoseconds p… Read More

          ??????????? ??????????? ???????????????????????????????????? ?????????????????????????????????????????????????????????????? ?????????????????????????????????????????? ????????????????????????????????????????????? ???????????????????????????????????????????????????????? ???????????????????????????????????????????????? ????????????????… Read More