Generation of output laser pulses having a tunable central wavelength
AssigneeRefined Laser Systems GmbH
InventorsMaximilian Brinkmann, Carsten Fallnich, Tim Hellwig
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Abstract
In a device for generating output laser pulses having a tunable central wavelength, based on parametric amplification, a laser system is to be provided that has less complexity, but that nevertheless provides great tunability for the wavelength, permits rapid switching of the wavelength, and allows the spectral bandwidth of the emitted pulses to be adjusted. This is attained in that for adjustability of the bandwidth of the output laser pulses, an optical device is provided that is designed to influence the spectral phase of the pump pulses as a function of the spectral phase of the seed pulses.
Claims16
A device for generating output laser pulses having a tunable central wavelength, based on parametric amplification, comprising:
- an optical pump pulse generator having an adjustable repetition rate for generating pump pulses,
- a fiber-based optical parametric oscillator having a feedback device and a parametric amplifying medium, embodied to receive the pump pulses and convert the latter using parametric generation to a wavelength-shifted idler pulse and a signal pulse wavelength-shifted thereto, and
- a dispersive feedback device designed to feed back the idler pulse or the signal pulse via a resonator, so that the idler pulse or the signal pulse then may be used as seed pulse for the parametric amplification,
- wherein,
- for adjustability of the bandwidth of the output laser pulses, an optical device is provided that is designed to influence the spectral phase of the pump pulses as a function of the phase of the seed pulses by adapting the spectral phase of the pump pulses to the spectral phase of the seed pulses.
A method for generating output laser pulses having a tunable central wavelength and an adjustable bandwidth, based on parametric amplification, comprising:
- generating pump pulses having an adjustable repetition rate, receiving the pump pulses in a fiber-based optical parametric oscillator having a parametric amplifying medium,
- converting the pump pulses using parametric generation to a wavelength-shifted idler pulse and a signal pulse wavelength-shifted thereto,
- feeding back the idler pulse or the signal pulse via a dispersive resonator,
- using the fed-back idler pulse or signal pulse then as a seed pulse for parametric amplification, and,
- influencing the spectral phase of the pump pulses as a function of the phase of the seed pulses by means of an optical device by adapting the spectral phase of the pump pulses to the spectral phase of the seed pulses.
Dependencies are inferred from the claim text.