Presentations

    Numerical aperture dependence of damage and white light generation from femtosecond laser pulses in bulk fused silica, at Photonics West 2002 (San Jose, CA), Thursday, January 24, 2002:
    The femtosecond laser has become an important tool in the micromachining of transparent materials. In particular, focusing at high numerical aperture enables structuring the bulk of materials. At low numerical aperture and comparable energy, focused femtosecond pulses result in white light or continuum generation. It has proven difficult to damage transparent materials in the bulk at low NA. We have measured the threshold energy for continuum generation and for bulk damage in fused silica for numerical apertures between 0.01 and 0.65. The threshold for continuum generation exhibits a minimum... Read more about Numerical aperture dependence of damage and white light generation from femtosecond laser pulses in bulk fused silica