Chong Andy, Renninger William H, Wise Frank W
Department of Applied Physics, Cornell University, Ithaca, NY 14853, USA.
Opt Lett. 2008 Nov 15;33(22):2638-40. doi: 10.1364/ol.33.002638.
The factors that control the pulse duration in all-normal-dispersion lasers are identified. To minimize the pulse duration the cavity dispersion should be as small as possible. For fixed dispersion increasing pulse energy leads to shorter pulses with more structured spectra. Experiments performed with ordinary single-mode fiber at 1 microm wavelength agree reasonably with numerical simulations and produce clean approximately 80 fs pulses. The simulations indicate that 30 fs pulses can be reached at higher energies.
确定了在全正色散激光器中控制脉冲持续时间的因素。为了使脉冲持续时间最小化，腔色散应尽可能小。对于固定的色散，增加脉冲能量会导致更短的脉冲和更具结构的光谱。在1微米波长下用普通单模光纤进行的实验与数值模拟相当吻合，并产生了约80飞秒的清晰脉冲。模拟表明，在更高能量下可以达到30飞秒的脉冲。
