Sub-100 fs single-walled carbon nanotube saturable absorber mode-locked Yb-laser operation near 1 microm.
Sub-100 fs single-walled carbon nanotube saturable absorber mode-locked Yb-laser operation near 1 microm.
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DOI：
10.1364/oe.17.020109
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发表时间：
2009-10
期刊：
影响因子：
3.8
通讯作者：
A. Schmidt;S. Rivier;W. Cho;J. Yim;S. Choi;Soonil Lee;F. Rotermund;D. Rytz;G. Steinmeyer
中科院分区：
文献类型：
--
作者：
A. Schmidt;S. Rivier;W. Cho;J. Yim;S. Choi;Soonil Lee;F. Rotermund;D. Rytz;G. Steinmeyer
设计并制备了透射型和反射型单壁碳纳米管可饱和吸收体（SWCNT-SA），用于体激光器在1微米光谱范围内的被动锁模。采用扩散键合Yb：KYW/KYW晶体实现了锁模激光运转，分别采用反射型和透射型SWCNT-SA实现了83 fs和140 fs的短脉冲。在相同的波长范围内，测得的吸收体的非线性参数接近半导体可饱和吸收镜的非线性参数。利用相同的腔比较SWCNT-SA和SESAM的锁模性能，SESAM仅产生66 fs持续时间的稍短的脉冲。几乎相同的性能表明，良好优化的SWCNT-SA可以取代SESAM，即使在1微米的区域。
Transmission- and reflection-type single-walled carbon nanotube saturable absorbers (SWCNT-SAs) were designed and fabricated for passive mode-locking of bulk lasers in the 1 microm spectral range. Mode-locked laser operation based on a diffusion-bonded Yb:KYW/KYW crystal was demonstrated, and pulses as short as 83 fs and 140 fs were achieved applying reflection-type and transmission-type SWCNT-SA, respectively. The nonlinear parameters of the absorbers were measured to be in close vicinity to those of a semiconductor saturable absorber mirror for the same wavelength range. Mode-locking performance with SWCNT-SAs and the SESAM was compared utilizing the same cavity, with the SESAM resulting in only slightly shorter pulses of 66 fs duration. The nearly identical performance indicates that well-optimized SWCNT-SAs can substitute SESAMs even in the 1 microm region.