Ultra-short pulse laser system and method for producing femtosecond or picosecond pulses
AssigneesDr. Daniel KOPF, High Q Technologies GmbH
InventorDaniel KOPF
Life of this patent
Estimating the term…
Abstract
An ultra-short pulse laser system comprising an amplifying laser medium for producing a laser emission, a laser resonator having at least one resonator mirror and a pump source has a gas-filled section with a filling gas, the latter consisting of a single gas or a filling gas mixture differing from the composition of air, whose nonlinear refractive index n2 substantially corresponds to that of air and which has a rotational Raman effect which is smaller in comparison with air.
Claims15
An ultra-short pulse laser system for producing femtosecond or picosecond pulses, comprising at least
- an amplifying laser medium for producing a laser emission,
- a laser resonator having at least one resonator mirror and at least one gas-filled section and
- a pump source, in particular a laser diode source, for pumping the laser medium,
- in particular having a pulse energy of at least 1 microjoule within the laser resonator and/or a repetition rate below 50 MHz,
- wherein the gas-filled section is filled with a filling gas comprising a single gas or a filling gas mixture differing from the composition of air,
- the nonlinear refractive index n2 of the gas-filled section substantially corresponding to that of air and
- the filling gas having a rotational Raman effect which is smaller in comparison with air.
A method for producing femtosecond or picosecond pulses in an ultra-short pulse laser system, comprising at least
- an amplifying laser medium for producing a laser emission (AS),
- a laser resonator having at least one resonator mirror and
- a pump source, in particular a laser diode source, for pumping the laser medium, and
- guidance of the beam path of the laser emission to be produced through a gas-filled section within the laser resonator, in particular having a pulse energy of 1 microjoule within the laser resonator and/or a repetition rate below 50 MHz,
- wherein the gas-filled section is filled with a filling gas comprising a single gas or a filling gas mixture differing from the composition of air,
- the nonlinear refractive index n2 of the gas-filled section substantially corresponding to that of air and
- the filling gas having a rotational Raman effect which is smaller in comparison with air.
Dependencies are inferred from the claim text.