Laser Optics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2BZ, UK
Abstract:
Through optimisation of the spectrum and dispersion parameters of a synchronously mode locked Rhodamine B dye laser, pulses as short as 270 fs have been directly generated without using any saturable absorber or pulse compressor. In addition a system of tunable output coupling with well characterised dispersion has been demonstrated.