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A device for increasing the spectral bandwidth of optical pulses as well as an arrangement and a method for reducing the duration of optical pulses with the use of such a device

A spectral bandwidth, pulse technology, applied in the field of hollow-core fiber compression solutions, which can solve the problems of structure increase, excess, complexity, etc.

Active Publication Date: 2013-03-06
HIGH Q LASER
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The differential pumping scheme adds significant complexity to the structure, while the length of the HFC chamber alone is about 4 meters, thus exceeding the size of typical tabletop structures

Method used

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  • A device for increasing the spectral bandwidth of optical pulses as well as an arrangement and a method for reducing the duration of optical pulses with the use of such a device
  • A device for increasing the spectral bandwidth of optical pulses as well as an arrangement and a method for reducing the duration of optical pulses with the use of such a device
  • A device for increasing the spectral bandwidth of optical pulses as well as an arrangement and a method for reducing the duration of optical pulses with the use of such a device

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Embodiment Construction

[0084] First, refer to Figure 1 to Figure 4 , reference has been made to these drawings in the preceding part of this specification. However, for figure 2 , it should be mentioned that, in addition to figure 2 In addition to constructing the compressor 7 using a dispersion mirror compressor 8 schematically shown in , it is also possible to use one or more prism pairs 8', or one or more grating pairs, or a combination of a grating pair and a prism pair, Or a combination of a dispersive mirror and one or more prism pairs to construct the compressor 7 . All these embodiments of the compressor 7 operate to recompress the pulses output from the hollow fiber waveguide 3, as known per se.

[0085] exist image 3 , schematically shows the cross-section of the hollow fiber 3A of the waveguide 3, and from this illustration it can be seen that the hollow core 10 of the hollow fiber 3A has a radius a and an entire inner diameter equal to 2a.

[0086] refer to Figure 4 , shows a ...

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Abstract

A device for increasing the spectral bandwidth of optical pulses, comprises a hollow fiber waveguide (3A), optical components (5; 6) for focusing the beam (1) into the hollow fiber waveguide (3A) and for recollimating the beam at the exit of the hollow fiber waveguide, the hollow fiber waveguide (3A) being contained in an air-tight chamber (3B) filled with a gas at a given pressure; the length of the hollow fiber (3A) is such that, for a given input pulse energy and gas pressure, the energy contained in a fundamental propagation mode of the optical pulses that has minimum propagation losses exhibits substantially periodic oscillations over the full length (Lf) of the hollow fiber waveguide (3A) and reaches a local maximum at the output end (13) of the said hollow fiber waveguide.

Description

technical field [0001] The present invention generally relates to a hollow-core fiber compression scheme for high-energy femtosecond pulses. [0002] In more detail, the invention relates to a device for increasing the spectral bandwidth of an optical pulse, said device comprising: [0003] a hollow fiber optic waveguide having an input end and an output end; [0004] optical components for focusing a light beam into said hollow fiber waveguide and for recollimating said light beam at the output end of said hollow fiber waveguide, [0005] The said hollow fiber waveguide is accommodated in an airtight chamber filled with gas at a given pressure. [0006] Furthermore, the invention also relates to a device using such a device and a corresponding method, ie a method for reducing the duration of an optical pulse. Background technique [0007] Period-scale intense femtosecond laser pulses are an important enabling tool in time-resolved spectroscopic measurements, especially i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/35H01S3/00
CPCH01S3/0092H01S3/0057G02F1/3513G02F2203/26G02F1/365H01S3/063
Inventor 加布里埃尔·弗洛林·滕佩亚
Owner HIGH Q LASER
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