科研之友
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摘要
A simplest saturable absorber, in the form of an unpumped section, is introduced into a Fabry-Perot semiconductor laser with a strongly asymmetric broadened waveguide structure incorporating a relatively thick (80 nm) active layer. This allows for suppression of trailing oscillations and a decrease in the optical pulse width compared to the uniformly biased structure. Single optical pulses of similar to 80 ps full width at half maximum (FWHM) and similar to 35 W peak power (similar to 3 nJ pulse energy, E-opt), practically without trailing edge oscillations, were experimentally achieved under room temperature conditions by absorber-assisted gain-switching, using pumping current pulses of similar to 1.3 ns FWHM and similar to 17 A amplitude. The laser emission has a narrow (13 degrees FWHM in the transverse direction) far field.
- 出版日期2013-12-2
