Broadband laser light sources for commercial and biomedical applications

Uwe Morgner; P. Wagenblast; R. Ell; Wolfgang Seitz; Erich P. Ippen; James G. Fujimoto; Franz X. Kartner

doi:10.1117/12.478581

19 June 2003 Broadband laser light sources for commercial and biomedical applications

Uwe Morgner, P. Wagenblast, R. Ell, Wolfgang Seitz, Erich P. Ippen, James G. Fujimoto, Franz X. Kartner

Proceedings Volume 4978, Commercial and Biomedical Applications of Ultrafast Lasers III; (2003) https://doi.org/10.1117/12.478581
Event: High-Power Lasers and Applications, 2003, San Jose, CA, United States

Abstract

Novel optical components enable the generation of the shortest pulses and broadest spectra from Kerr-Lens mode-locked laser oscillators without extracavity spectral broadening, namely 20-fs-pulses from Cr⁴⁺:YAG around 1.5μm, 14-fs-pulses from Cr:forsterite around 1.3μm, 5-fs-pulses from Ti:sapphire around 0.8μm, and 10-fs-Pulses from Cr³⁺:LiCAF around 0.8μm. Key components are well adapted phase correcting mirrors ("double-chirped mirrors") which allow for high reflectivity and dispersion compensation in bandwidths up to one octave. In parallel to the development of new broadband light sources based on femtosecond technology micron resolution imaging with Optical Coherence Tomography using theses sources has been achieved. The availability of the high resolution OCT technology for future clinical applications will depend on the development of low cost, compact sources of ultrabroad bandwidth light. Especially Cr³⁺:LiCAF is a very promising material for femtosecond laser sources as compact replacements for Ti:sapphire oscillators because of its low quantum defect, a broadband emission range around 800 nm, and an absorption band in a spectral range where high-brightness laser diodes are available.

Citation Download Citation

Uwe Morgner, P. Wagenblast, R. Ell, Wolfgang Seitz, Erich P. Ippen, James G. Fujimoto, and Franz X. Kartner "Broadband laser light sources for commercial and biomedical applications", Proc. SPIE 4978, Commercial and Biomedical Applications of Ultrafast Lasers III, (19 June 2003); https://doi.org/10.1117/12.478581

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