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 .