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Laser with non-linear optical loop mirror

A laser and optical loop technology, applied in the field of lasers, can solve the problems of labor, the inability of the laser to start automatically, and trouble.

Active Publication Date: 2013-09-18
MENLO SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In the past, method (c) was more troublesome because the laser was not self-starting or could only be self-starting through the laborious use of additional active modulators

Method used

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  • Laser with non-linear optical loop mirror
  • Laser with non-linear optical loop mirror
  • Laser with non-linear optical loop mirror

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Embodiment Construction

[0056] figure 1 A bidirectional nonlinear optical loop mirror (NOLM) 1 used in a laser according to the invention is schematically shown. The NOLM1 is mainly made of an optical fiber 2, preferably a polarization maintaining (PM) optical fiber 2, which is bent to substantially form a loop. Alternatively, the NOLM can be configured with free-space optical elements. A beam splitter 3 is provided at the entry and exit point 4 of the NOLM. The entry and exit point 4 typically serves as the closing point of the optical fiber 2 of the NOLM, the incident beam or pulse of the laser is split by the beam splitter 3 into two parts which counter-propagate inside the NOLM 1 .

[0057] The beam splitter 3 at the entry point 4 comprises a first port 5 and a second port 6 . Laser pulses can be introduced into the NOLM through the first port 5 and / or through the second port 6 . Each laser pulse is split by a beam splitter 3, whereby two partial laser pulses are generated. NOLM1 is used to...

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Abstract

The invention relates to a laser with a laser resonator. In the laser (12, 18) with the laser resonator (13), the laser resonator (13) comprises a non-linear optical loop mirror (1, 1'), NOLM, which is adapted to guide counter-propagating portions of laser pulses, and to bring the counter-propagating portions of laser pulses into interference with each other at an exit point (4) of the NOLM (1, 1'). The invention is characterized by the non-linear optical loop mirror (1, 1') comprising a non-reciprocal optical element (7, 7').

Description

technical field [0001] The invention relates to a laser having a laser resonator comprising a non-linear optical loop mirror (NOLM). The NOLM is used to guide the counterpropagating laser pulse portions and to cause the counterpropagating laser pulse portions to interfere with each other at the exit point of the NOLM. In the description of the present invention, the term NOLM is interpreted as including NALM (non-linear amplifying loop mirror, non-linear amplifying loop mirror). Background technique [0002] Typically, to generate ultrashort pulses, it is necessary to have a fixed phase relationship between the laser modes that make up the output. The phase relationship is fixed by mode locking the laser. There are different approaches for mode-locking lasers. These methods all rely on the fact that the element is placed in the laser used to facilitate the pulse transmission, in other words, the element has higher losses in cw operation than in pulsed state operation. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/083H01S3/108
CPCH01S3/06791H01S3/1112H01S3/0057H01S3/08H01S3/091
Inventor 沃尔夫冈·汉塞尔罗纳德·霍茨瓦尔特拉尔夫·杜贝克迈克尔·梅
Owner MENLO SYST