Abstract

By inserting a low-reflectivity flat surface inside the oscillator cavity, we demonstrate a flexible and phase-insensitive method for multiplying the repetition rate of a femtosecond passive mode-locked solid-state laser. Without mode matching and feedback control, we successfully multiplied the repetition rate of a passively mode-locked Cr:forsterite laser from 124 MHz to 1.24 GHz. High-repetition-rate femtosecond optical pulses with average power of $>$ 100 mW can be obtained with the demonstrated method.

© 2005 Optical Society of America

Intracavity frequency-doubled femtosecond Cr⁴⁺:forsterite laser

Tzu-Ming Liu, Shi-Peng Tai, and Chi-Kuang Sun
Appl. Opt. 40(12) 1957-1960 (2001)

Femtosecond Cr:forsterite laser diode pumped by a double-clad fiber

Xiang Liu, Liejia Qian, Frank Wise, Zhigang Zhang, Taro Itatani, Takeyoshi Sugaya, Tadashi Nakagawa, and Kenji Torizuka
Opt. Lett. 23(2) 129-131 (1998)

2.1-W picosecond passively mode-locked external-cavity semiconductor laser

A. Aschwanden, D. Lorenser, H. J. Unold, R. Paschotta, E. Gini, and U. Keller
Opt. Lett. 30(3) 272-274 (2005)

Soliton mode-locked Er:Yb:glass laser

G. J. Spühler, L. Krainer, E. Innerhofer, R. Paschotta, K. J. Weingarten, and U. Keller
Opt. Lett. 30(3) 263-265 (2005)

Generation of sub-100-fs pulses at up to 200 MHz repetition rate from a passively mode-locked Yb-doped fiber laser

F. Ö Ilday, J. Chen, and F. X. Kärtner
Opt. Express 13(7) 2716-2721 (2005)