Ultrafast femtosecond mode-locked fiber laser plays an indispensable role in medical
imaging, space ranging, ophthalmology, terahertz spectroscopy, material micromachining …

Ultrafast laser materials processing has undergone an important change with the
development of non-diffracting beams. These beams enable overcoming many of the …

摘要贝塞尔光束以其独特的无衍射传输特性得到了广泛的关注, 在光学操控, 光学加工,
信息传输, 光学成像等领域具有巨大的应用前景. 为了丰富光束的传输特性 …

We reported a dual-wavelength femtosecond optical parametric oscillator (OPO) based on a
temperature-tuned LiB_3O_5 crystal. The OPO was synchronously pumped by a frequency …

Ultrafast lasers are ideal tools to process transparent materials because they spatially
confine the deposition of laser energy within the material's bulk via nonlinear …

We show an all-fiber multimode interference method for achieving pre-determined free-
space propagation of multimode optical beams exiting from the fiber end-facet. This method …

We have designed a trench-assisted optical fiber that can generate Bessel beams with
different shapes in the fundamental mode. The trench-assisted structure is nested by rings …

摘要设计了一种用非线性光子晶体光纤直接输出超连续贝塞尔光束的方案.
先用光纤熔接机在高非线性光子晶体光纤的输出端塌陷1 mm 左右, 然后将飞秒激光直接耦合到 …

We have designed a trench-assisted optical fiber which can generate Bessel beams with
different shapes by using finite element method and electromagnetic field theory. The trench …