Ultrafast diode-pumped Ti:sapphire laser with broad tunability

Coyle, Jamie C. E. and Kemp, Alan J. and Hopkins, John-Mark and Lagatsky, Alexander A. (2018) Ultrafast diode-pumped Ti:sapphire laser with broad tunability. Optics Express, 26 (6). pp. 6826-6832. ISSN 1094-4087 (https://doi.org/10.1364/OE.26.006826)

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Abstract

We report a broadly wavelength-tunable femtosecond diode-pumped Ti:sapphire laser, passively mode-locked using both semiconductor saturable absorber mirror (SESAM) and Kerr-lens mode-locking (KLM) techniques. Using two pump laser diodes (operating at 450 nm), an average output power as high as 433 mW is generated during mode-locking with the SESAM. A tunability range of 37 nm (788-825 nm) was achieved with the shortest pulse duration of 62 fs at 812 nm. In the KLM regime, an average output power as high as 382 mW, pulses as short as 54 fs, and a tunability of 120 nm (755-875 nm) are demonstrated.

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