Experiment Fiber laser cutting

This set allows the study of all parts of a fiber laser: pumping system, active medium, linear or ring cavity. The pump diode control unit allows control of the temperature and injection current of the laser diode, as well as modulation of the current and therefore the ouExperimentut power. It also has an amplifier for the photodiode. Topics covered: - Characterization of the laser diode - Absorption / Emission of the amplifying medium - Optical pumping - Fluorescence decay and excited state lifetime - Laser effect threshold, losses - Dynamic behavior of the laser - Extension: Erbium-doped fiber amplifier Principles and objectives: This set offers numerous possible experiments. The laser emission threshold and the efficiency of the 980 nm laser pump can be determined. The coupling of the pump source into the Erbium-doped fiber as well as the absorption and fluorescence properties are studied. A linear Erbium-doped fiber laser can be created using a resonant mirror. By closing this cavity, it is also possible to build a ring fiber laser! These two types of configurations can be studied based on parameters such as the length of the active fiber (4 lengths provided), the level of losses, the pump power, and so on. Optionally, a 1.55-micron laser allows the study of the Erbium-doped fiber amplifier (EDFA).

Composition:
▪ 1 base plate 70 x 50 cm
▪ 1 980 nm / 100 mW fiber laser diode
▪ 1 laser diode controller (temperature, current, modulation)
▪ 1 WDM 3-way fiber coupler 980/1550 nm
▪ 1 cylinder with 4 Erbium-doped fibers of different lengths (1 - 4 m)
▪ 1 1550 nm optical diode
▪ 1 pair of fiber collimators with adjustment support for free space propagation
▪ 1 variable neutral density filter with 11 attenuation levels
▪ 1 Si photodiode with 2-axis adjustment on jumper
▪ 1 GaAs photodiode with 2-axis adjustment on jumper
▪ 1 flat mirror on jumper
▪ 1 set of fittings for single-mode fibers
▪ 1 IR visualization card (800-1600 nm)
▪ 2 pairs of Laser safety glasses
▪ 1 optical cleaning kit
▪ 1 set of experiments instructions (in English)