【摘 要】
:
As one of the greatest inventions in the 20th century,ultrafast lasers have offered new opportunities in the areas of basic scientific research and industrial manufacturing.Optical modulators are of great importance in ultrafast lasers,which directly affe
【机 构】
:
Shenzhen Key Laboratory of Laser Engineering,College of Physics and Optoelectronic Engineering,Shenz
论文部分内容阅读
As one of the greatest inventions in the 20th century,ultrafast lasers have offered new opportunities in the areas of basic scientific research and industrial manufacturing.Optical modulators are of great importance in ultrafast lasers,which directly affect the output laser performances.Over the past decades,significant efforts have been made in the development of compact,controllable,repeatable,as well as integratable optical modulators[i.e.,saturable absorbers].In this paper,we review the fundamentals of the most widely studied saturable absorbers,including semiconductor saturable absorber mir-rors and low-dimensional nanomaterials.Then,different fabrication technologies for saturable absorbers and their ultra-fast laser applications in a wide wavelength range are illustrated.Furthermore,challenges and perspectives for the future development of saturable absorbers are discussed and presented.The development of ultrafast lasers together with the continuous exploration of reliable saturable absorbers will open up new directions for the mass production of the next-generation optoelectronic devices.
其他文献
Obvious spatiotemporal heterogeneity is a distinct characteristic of ecosystems in subtropical bays.To aid targeted management and ecological restoration in long and narrow semi-enclosed subtropical bays,we analyzed seasonal and regional differences in lo
The femtosecond laser has been an efficient tool for optical fiber high temperature sensor construction.Here,we review the progress of optical fiber high temperature sensors based on femtosecond laser fabricated fiber gratings and various types of fiber i
A new species Lobophora tsengii is described from Bach Long Vy (Bailongwei) Island,Haiphong Province,Vietnam.The plants inhabit the subtidal zone and have predominantly erect fan-shaped thalli that attach to the substrate by a basal holdfast.The thallus i
The homodimeric kinesin-2 protein KIF17 functions in intracellular transport and spermio-genesis in mammals.However,its role in fish spermiogenesis has not been reported.Here,we aimed to clone full-length kif17 cDNA and determine the molecular characteris
Magnetotactic bacteria (MTB) are morphologically and phylogenetically diverse prokaryotes commonly able to produce magnetic nanocrystals within intracellular membrane-bound organelles (i.e.,magnetosomes) and to swim along geomagnetic field lines.We studie
Salt stress is an abiotic stress to plants in especially saline lakes.Dunaliella,a halophilic microalga distributed throughout salt lakes and seas,can respond to different salinity stresses by regulating the expression of some genes.However,these genes an
We propose a design of single-mode orbital angular momentum[OAM]beam laser with high direct-modulation bandwidth.It is a microcylinder/microring cavity interacted with two types of second-order gratings:the complex top grating containing the real part and
A novel reconstruction method of nanometer micro-displacement of Fabry-Perot[F-P]interference is proposed in this study.Hilbert transforms are performed for F-P interference fringes,and the obtained signal performs tangent operation with the original sign
We propose an effective way to achieve an enhanced optical absorption surface of titanium alloy 7[Ti7]fabricated by a femtosecond[fs]laser assisted with airflow pressure.The effect of laser scanning speed and laser power on the surfaces\' morphology and
Optical channel waveguides with depressed cladding configurations have been produced in Nd,Gd∶ CaF2 laser crystals by using ultrafast laser inscription.Waveguide properties are investigated in terms of guiding behaviors and localized laser-induced lattice