Abstract: Provided is a device of generating various types of pulses by controlling a distance between saturable absorber connectors, and more particularly, a device of generating various types of pulses by controlling a distance between saturable absorber connectors, capable of actively controlling a distance between saturable absorbers to completely overcome a disadvantage that an opened space is present in a cavity or a disadvantage that a fiber component should be changed and implementing a simple design of the entire fiber laser cavity since only a saturable absorber part, which is a portion of a fiber laser cavity, should be designed, as a carbon nanotube saturable absorber part in a passively mode-locked fiber laser generating apparatus using the saturable absorber.

Abstract: Provided is single-walled carbon nanotube saturable absorber production via a multi-vacuum filtration method, and more particularly, single-walled carbon nanotube saturable absorber production via a multi-vacuum filtration method, capable of depositing a carbon nanotube thin film on a filter using a vacuum chamber and a membrane filter, etching the filter using an etchant so as to be transferred to an upper surface of the polymer, coating the polymer on the carbon nanotube to thereby produce a carbon nanotube saturable absorber, as a method of producing a carbon nanotube thin film to transfer the thin film to the polymer using a multi-filtration method in order to produce a passive saturable absorber to be used in laser oscillation.

Abstract: Provided are an apparatus and method for stabilizing a pulse of a fiber-type femtosecond laser, and more particularly, to an apparatus for stabilizing a pulse of a fiber-type femtosecond laser, which adjusts a distance between a saturable absorption material and an optical fiber connection unit of the femtosecond laser to automatically perform mode-locking, thereby obtaining a laser pulse stabilized for a long time, and a method for stabilizing the pulse of the fiber-type femtosecond laser. The apparatus for stabilizing a pulse of a fiber-type femtosecond laser in a fiber-type femtosecond laser system including a pump laser (100) and a fiber cavity (200) includes a distance adjustment part (300) adjusting a distance (d) between a saturable absorption material (700) and a connection unit of an optical fiber (310) which are provided within the fiber cavity (200).