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stabilize the optical frequency comb

An optical frequency comb, stable technology, applied in the field of optical frequency comb, can solve the problem of unreliable activation of the regulation loop and so on

Active Publication Date: 2020-03-03
MENLO SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Known regulation loops for frequency comb stabilization can only be activated unreliably

Method used

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  • stabilize the optical frequency comb
  • stabilize the optical frequency comb
  • stabilize the optical frequency comb

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Embodiment Construction

[0040] exist figure 1 An exemplary laser device 1 that can be operated with the method according to the invention is shown in . It should of course be noted that other laser arrangements can also be operated with the method according to the invention, as long as an optical frequency comb can be provided.

[0041] exist figure 1 In the laser device 1 in , the laser-active medium 2 is arranged on the optical axis 3 of the resonator 4 . The laser-active medium 2 can be, for example, a Ti:Sa crystal. Other laser-active media are also conceivable, in particular laser crystals such as Yb:YAG, Cr:LiSAF or Cr:forsterite. The laser active medium 2 is pumped with a pump laser beam P generated by a pump laser 5 arranged outside the resonator 4 .

[0042] The resonator 4 may comprise a plurality of resonator mirrors 6a, 6b, 6c, 6d. In the illustrated embodiment, the resonator 4 is a linear resonator. In this case, the two resonator mirrors, namely mirrors 6a and 6b, form a resonat...

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Abstract

A method for operating a laser device (1), wherein an optical frequency comb can be stabilized and the frequencies of the modes thereof are describable by the formula fm=m×frep+f0, where frep is a mode spacing, f0 is an offset frequency and m is a natural number. At least one signal (S1, S2, S3, S4) is determined, which correlates with an actual value of a degree of freedom (F), wherein the degree of freedom (F) is a linear combination of the offset frequency f0 and the mode spacing frep of the frequency comb. The actual value of the degree of freedom (F) is set in a predetermined capture range (F) of a second control unit (40) using a first control unit (10) on the basis of the signal. As soon as the capture range (ΔFcapture) of the second control unit (40) is reached, the second control unit (40) is activated and the actual value is regulated to an intended value (ΔFintended) with the aid of the second control unit (40).

Description

technical field [0001] The present invention relates to the field of optical frequency combs. As described below, the method according to the invention can be used to stabilize an optical frequency comb. [0002] As is known, optical frequency combs can be generated by supplying short or ultrashort laser pulses. Such laser pulses can have a pulse duration in the picosecond or femtosecond range. Of course, larger or smaller pulse durations are also conceivable, for example pulse durations in the attosecond to microsecond range. [0003] In the frequency domain, a sequence of laser pulses can be represented as a frequency comb. figure 2 Such a view is shown as a frequency comb, where light intensity I is plotted against frequency f. The frequency comb consists of discrete optical frequencies f m the next mode. The envelope of the intensity curve can lie within the intensity bandwidth of the laser medium in which the laser pulses are generated. The width of this envelope i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/139H01S3/13
CPCH01S3/094038H01S3/1106H01S3/1305H01S3/1307H01S3/1312H01S3/137H01S3/139H01S3/1394H01S3/1625H01S3/1636
Inventor 马克·费舍尔罗纳德·霍茨瓦尔特奥拉夫·曼德尔
Owner MENLO SYST