Fiber Lasers Capable of Generating Output Spectra Broader than the Gain Bandwidth
- Detailed Technology Description
- This technology has shown that the gain bandwidth does not present a fundamental limitation to the minimum pulse duration in an amplifier-similariton laser.
- Others
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- Issued US patent 9,031,100
- A. Chong; H. Liu; B. Nie; B. G. Bale; S. Wabnitz; W. H.Renninger; M. Dantus; F. W. Wise, "Pulse generation without gain-bandwidth limitation in alaser with self-similar evolution," Opt. Express 20, 14213-14220(2012)
- *Abstract
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The shortest light pulse that can be generated by a laser oscillator will always be of fundamental interest to the field of ultrafast science, and it will determine the time resolution or bandwidth of many measurements. A critical factor in the design of an ultrashort-pulse laser is the bandwidth of the gain medium. This technology has shown that the gain bandwidth does not present a fundamental limitation to the minimum pulse duration in an amplifier-similariton laser. The spectrum can be broadened well beyond the gain bandwidth in a nonlinear segment, and filtering produces the seed pulse to the amplifier that allows a self-consistent solution. Spectral broadening of a parabolic input pulse in a nonlinear fiber yields 200-nm bandwidth and 21-fs (6-cycle)pulses. This opens a promising route to the development of few-cycle fiber lasers.
- *Licensing
- Patrick Govangpjg26@cornell.edu(607) 254-2330
- Country/Region
- USA
