Abstract:
A supercontinuum light source ( 1000) comprising an intermediate supercontinuum light source (100) and a single mode coupling unit (300), an optical measurement system comprising such light source, as well as a method of measuring are described. The supercontinuum light source comprises a pulse frequency multiplier (103) to increase the repetition rate and the single mode coupling unit is arranged to dampen and shape the spectrum from the intermediate supercontinuum light source to allow measurements with a reduced noise floor.
Abstract:
A light source comprises: a pulse generator (11) for providing a first sequence (13) of light pulses, the first sequence (13) of light pulses comprising a first number of light pulses within a predetermined time period, a manipulator (15) configured to generate a second sequence (17) of light pulses from the first sequence (13) of light pulses, the second sequence (17) of light pulses having a second number of light pulses within the predetermined time period, the second number being different from the first number, and a nonlinear optical element (19) arranged to receive the second sequence (17) of light pulses.
Abstract:
The invention relates to a microstructured optical fiber for generating incoherent supercontinuum light upon feeding of pump light. The microstructured optical fiber has a first section and a second section. A cross-section through the second section perpendicularly to a longitudinal axis of the fiber has a second relative size of microstructure elements and preferably a second pitch that is smaller than a blue edge pitch for the second relative size of microstructure elements. The invention also relates to an incoherent supercontinuum source comprising a microstructured optical fiber according to the invention.
Abstract:
The invention relates to an optical fiber comprising a core and a cladding comprising a core material and a cladding material, respectively, wherein said fiber is a non-linear microstructured optical fiber, said microstructured optical fiber being obtainable by a method comprising loading with hydrogen and/or deuterium and optionally anneal and/or irradiation hereby the lifetime of the fiber may be extended in high power applications.
Abstract:
A light source (1), comprising: a pulse generator (2) for providing an initial sequence of light pulses (5), the initial sequence of light pulses having a selected number of light pulses in a selected time period, the pulse generator further comprising an optical source (3) for producing optical pulses; and a modulator (4) in communication with the optical source (3) for increasing or decreasing the selected number of pulses provided by the pulse generator in the selected time period; first and second optical arms (7,8), for propagating, respectively, first and second sequences of light pulses (10,11), each derived from the initial sequence of light pulses (5), wherein the first optical arm (7) comprises a first manipulator (9) configured to generate the first sequence of light pulses (10) from the initial sequence of light pulses (5), the first sequence of light pulses (10) having a first number of light pulses within the selected time period, wherein the first number is higher than the initial number, wherein the second sequence of light pulses (11) has a second number of light pulses within the selected time period, wherein the second number is different than or equal to the initial number, wherein the light source further comprises a nonlinear optical element (14) arranged to receive the first sequence of light pulses (10) or the second sequence of light pulses (11), and an optical switch (6) arranged to switch either the first sequence of light pulses (10) or the second sequence of light pulses(11) for reception by the nonlinear optical element (14).
Abstract:
A light source (1), comprising: a pulse generator (2) for providing an initial sequence of light pulses (3), the initial sequence of light pulses (3) comprising an initial number of light pulses within a predetermined time period, first and second optical arms, for propagating, respectively, first and second sequences of light pulses, each derived from the initial sequence of light pulses, wherein the first optical arm (5) comprises a first manipulator (7) configured to generate the first sequence of light pulses (9) from the initial sequence of light pulses (3), the first sequence of light pulses (9) having a first number of light pulses within the predetermined time period, wherein the first number is higher than the initial number, wherein the second sequence of light pulses (10) has a second number of light pulses within the predetermined time period, wherein the second number is equal to or lower than the initial number, wherein the light source further comprises a nonlinear optical element (13) arranged to receive the first sequence of light pulses (9) or the second sequence of light pulses (10), and an optical switch (4) arranged to switch that either the first sequence of light pulses or the second sequence of light pulses is received by the nonlinear optical element.
Abstract:
A mode locked fiber laser system is arranged to have a lasing bandwidth and having a linear cavity, the cavity including a gain medium, a saturable absorber having a saturation power, and a filter having a spectral response, wherein the mode locked fiber laser system is arranged so that substantial CW mode locked operation is obtainable with less than 3 times the saturation fluence impinging on the saturable absorber.
Abstract:
Disclosed is a supercontinuum light source, comprising: a pulsed light source configured to emit a train of light-pulses; a modulation-module configured to modulate the train of light-pulses, thereby producing a modified train of light-pulses, wherein the modified train of light-pulses comprises a plurality of modified light-pulses, wherein each of the plurality of modified light-pulses is defined by at least: a peak-power, P0, and a pulse width, T0, and; one or more non-linear element(s) being defined by at least: a non-linear coefficient, γ, and a group-velocity dispersion parameter, β2, whereby each of the plurality of modified light pulses is further defined by: a soliton number, N, where N2 = T02 γ P0/|β2|, wherein said non-linear element(s) is/are configured to spectrally broadening the plurality of modified light-pulses, thereby generating a train of supercontinuum-pulses.
Abstract:
The invention relates to a microstructured optical fiber for generating incoherent supercontinuum light upon feeding of pump light. The microstructured optical fiber has a first section and a second section. A cross-section through the second section perpendicularly to a longitudinal axis of the fiber has a second relative size of microstructure elements and preferably a second pitch that is smaller than a blue edge pitch for the second relative size of microstructure elements. The invention also relates to an incoherent supercontinuum source comprising a microstructured optical fiber according to the invention.