Abstract: An optical amplification system that includes a combiner and an active fiber. The combiner is configured to receive and combine an input signal and an excitation signal. The active fiber is configured to receive the input signal and the excitation signal from the combiner and generate an amplified input signal. The active fiber is directly coupled to the combiner.

Abstract: Embodiments of systems and methods for fluid or structure surface disinfection using a series of pulsed lasers are disclosed. In an example, a system for fluid or structure surface disinfection includes a laser source, an optical module, and a controller coupled to the optical module. The laser source is configured to generate a laser stream. The optical module is configured to shape the laser stream and direct the laser stream toward a portion of a surface of a structure. The controller is coupled to the optical module and configured to control the optical module to direct the laser stream toward the portion of the surface of the structure.

Abstract: Embodiments of systems and methods for medical treatment using a series of pulsed lasers are disclosed. In an example, a system for medical treatment includes a laser source, an optical module, and a controller coupled to the optical module. The laser source is configured to generate a series of pulsed lasers. The optical module is configured to provide a series of focused laser spots on a patient based on the series of pulsed lasers. The controller is configured to control the at least one of the optical module and a stage for holding the patient to move the series of focused laser spots on the patient to form a scan pattern.

Abstract: Embodiments of systems and methods for medical treatment using a series of pulsed lasers are disclosed. In an example, a system for medical treatment includes a laser source, an optical module, and a controller coupled to the optical module. The laser source is configured to generate a series of pulsed lasers. The optical module is configured to provide a series of focused laser spots on a patient based on the series of pulsed lasers. The controller is configured to control the at least one of the optical module and a stage for holding the patient to move the series of focused laser spots on the patient to form a scan pattern.

Abstract: To avoid harmful nonlinear effects in the amplification of short optical pulses, an initial pulse is divided into a sequence of lower-energy temporally spaced pulses that are otherwise identical to the original pulse. The low-intensity pulses are amplified and then recombined to create a final amplified output pulse.

Abstract: A short-pulse fiber amplifier system (10) is designed so that nonlinear phase shifts and third-order dispersion are purposely introduced that compensate each other. In particular, the nonlinear phase shift accumulated in the amplifier is compensated by the third-order dispersion of the combination of a fiber stretcher (12) and a grating compressor (16). In the presence of third-order dispersion, an optimal nonlinear phase shift reduces the pulse duration, and enhances the peak power and pulse contrast compared to the pulse produced in linear propagation.

Abstract: To avoid harmful nonlinear effects in the amplification of short optical pulses, an initial pulse is divided into a sequence of lower-energy temporally spaced pulses that are otherwise identical to the original pulse. The low-intensity pulses are amplified and then recombined to create a final amplified output pulse.

Abstract: A short-pulse fiber amplifier system (10) is designed so that nonlinear phase shifts and third-order dispersion are purposely introduced that compensate each other. In particular, the nonlinear phase shift accumulated in the amplifier is compensated by the third-order dispersion of the combination of a fiber stretcher (12) and a grating compressor (16). In the presence of third-order dispersion, an optimal nonlinear phase shift reduces the pulse duration, and enhances the peak power and pulse contrast compared to the pulse produced in linear propagation.