A compact cascaded ultrashort cavity dye laser oscillator-amplifier

It is reported that a small oscillator-amplifier which consists of two cas-caded ultrashort cavity dye laser(SCDL)and a dye laser amplifier.The pumping source is an atmaspere pressure N2 laser(λ=337.1nm).The size of the system is less 20cm×15cm,compared with that described in1,for a new optical geometry is employed.The beam diffusion loss of the N2 laser,used as the pumping source,is cut down greatly,therefore the system efficiency is raised obviously.The second SCDL cavity is constructed by using a new structure.So thermal unstability of the cavity and output features of the SCDL can be reduced.