CN103378541A - Polarization maintaining optical fiber mode-locked laser - Google Patents
Polarization maintaining optical fiber mode-locked laser Download PDFInfo
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- CN103378541A CN103378541A CN2013102949083A CN201310294908A CN103378541A CN 103378541 A CN103378541 A CN 103378541A CN 2013102949083 A CN2013102949083 A CN 2013102949083A CN 201310294908 A CN201310294908 A CN 201310294908A CN 103378541 A CN103378541 A CN 103378541A
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- polarization maintaining
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- optical fiber
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Abstract
A polarization maintaining optical fiber mode-locked laser is characterized by comprising an optical fiber reflector, a variable optical attenuator, a polarizer, a second input port of a wavelength division multiplexer, an output port of the wavelength division multiplexer, gain optical fibers, an isolator, a filter, an input port of a beam splitter, a first output port of the beam splitter and a saturable absorber mirror, wherein the optical fiber reflector, the variable optical attenuator, the polarizer, the second input port of the wavelength division multiplexer, the output port of the wavelength division multiplexer, the gain optical fibers, the isolator, the filter, the input port of the beam splitter, the first output port of the beam splitter and the saturable absorber mirror are sequentially connected in a fusion welding mode through polarization maintaining optical fibers. A pumping source is connected with a first input port of the wavelength division multiplexer in a fusion welding mode, and a second output port of the beam splitter is a laser output port. According to the polarization maintaining optical fiber mode-locked laser, two mode-locked mechanisms are utilized simultaneously. The polarization maintaining optical fiber mode-locked laser has the advantages that the full polarization maintaining optical fiber structure is provided, high mode-locked self-starting performance is achieved, and high stability and the compact structure are achieved. The polarization maintaining optical fiber mode-locked laser has wide application prospects.
Description
Technical field
The present invention relates to fiber laser, particularly a kind of polarization maintaining optical fibre mode-locked laser.
Background technology
Ultra-short pulse laser has important widely purposes at aspects such as optical communication, biologic medical, laser processing, scientific researches; In device of high power laser, there is very important meaning in good stable pulse seed source.
Solid state laser has very high requirement at aspects such as volume size, environmental requirement, stability.Fiber laser then can be good at avoiding above problem.Fiber laser is realized pulse output, mainly contains Q, active mode locking and the three kinds of mechanism of passive mode locking of transferring.Wherein passive mode locking has good stability, and pulse quality is high, but the advantages such as all optical fibre structure simple in structure.In fiber laser, realize that passive mode locking mainly contains following several scheme: nonlinear polarization rotation, properties in nonlinear optical loop mirror and saturable absorber.Because the above two structures need to be carried out Polarization Control to optical fiber, so optical fiber is to vibration, temperature and crooked etc. all very sensitive, easy losing lock, and restorability is poor.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of polarization maintaining optical fibre mode-locked laser; this mode-locked laser adopts two kinds of locked mode mechanism simultaneously; have the fine structure of full polarization, the high self-startup ability of locked mode, the characteristics such as high stability and compact conformation have wide practical use.。
Technical solution of the present invention is as follows:
A kind of polarization maintaining optical fibre mode-locked laser, characteristics are that its formation comprises and adopt the polarization maintaining optical fibre successively output port, gain fibre, isolator, filter, the input port of beam splitter, the first output port and the saturable absorbing mirror of beam splitter of the second input port, the wavelength division multiplexer of fibre reflector, adjustable optical attenuator, the polarizer, the wavelength division multiplexer of welding, the mutually welding of first input end mouth of pumping source and described wavelength division multiplexer, the second output port of described beam splitter is the Laser output port.
Described saturable absorbing mirror is made of together saturable absorber and speculum.
Described saturable absorbing mirror sticks on polarization maintaining optical fibre one end, as a chamber mirror of resonant cavity.
Described fibre reflector is connected with adjustable optical attenuator, consists of a chamber mirror of the adjustable resonant cavity of loss.Described adjustable optical attenuator is regulated cavity loss, realizes locked mode vibration output.
The invention has the advantages that:
1, utilize saturable absorber and spectral filtering double mechanism to carry out locked mode, self-starting is good.
2, the fine structure of full polarization, to vibration, the environmental factors such as variations in temperature are insensitive, are easy to be widely used.
3, spectral filtering mechanism utilizes filter to realize that price is low, and is insensitive to environmental change.
4, the connection of all elements is finished by fused fiber splice, realizes all optical fibre structure, and compact conformation is simple, is easy to integrated.
Description of drawings
Fig. 1 is the structural representation of polarization maintaining optical fibre mode-locked laser embodiment of the present invention.
Embodiment
The present invention will be further described below in conjunction with embodiment and accompanying drawing, but should not limit protection scope of the present invention with this.
See also Fig. 1, figure is the structural representation of polarization maintaining optical fibre mode-locked laser embodiment of the present invention.As seen from the figure, polarization maintaining optical fibre mode-locked laser of the present invention, its formation comprises and adopts polarization maintaining optical fibre successively the output port c, gain fibre 6, isolator 7, filter 8, the input port d of beam splitter 9, the first output port e and the saturable absorbing mirror 10 of beam splitter 9 of the second input port b, the wavelength division multiplexer 5 of fibre reflector 1, adjustable optical attenuator 2, the polarizer 3, the wavelength division multiplexer 5 of welding, the mutually welding of first input end mouth a of pumping source 4 and described wavelength division multiplexer 5, the second output port f of described beam splitter 9 is the Laser output port.
Described saturable absorbing mirror 10 is made of together saturable absorber and speculum.
Described saturable absorbing mirror 10 sticks on polarization maintaining optical fibre one end, as a chamber mirror of resonant cavity.Described fibre reflector 1 is connected connection with adjustable optical attenuator, consist of a chamber mirror of the adjustable resonant cavity of loss.Described adjustable optical attenuator 2 is regulated cavity loss, realizes locked mode vibration output.Described pumping source 4 is connected connection with wavelength division multiplexer, be connected with gain fibre 6 again, consists of fiber amplifier.
In the described interface unit optical fiber, except gain fibre is to protect the inclined to one side Yb dosed optical fiber, other are polarization maintaining optical fibre.Described device all adopts the mode of direct welding to connect, and realizes all optical fibre structure.
The course of work of the present invention is as follows:
Under suitable pump power, owing to amplified spontaneous emission becomes greatly gradually, so that in the chamber, can produce the unsettled continuous laser of pulse energy.Because saturable absorbing mirror 10 and fibre reflector 11 two ends form stable cavity, and through repeatedly concussion, non-linear absorption effect through saturable absorber, and filter is in the spectral filtering effect, high-octane pulse meeting is strengthened gradually, after repeatedly shaking, form stable mode-lock status.
Experiment shows that the present invention adopts two kinds of locked mode mechanism simultaneously, has the fine structure of full polarization, the high self-startup ability of locked mode, and the characteristics such as high stability and compact conformation have wide practical use.
Claims (2)
1. polarization maintaining optical fibre mode-locked laser, be characterised in that its formation comprises the successively fibre reflector of welding (1) of employing polarization maintaining optical fibre, adjustable optical attenuator (2), the polarizer (3), second input port (b) of wavelength division multiplexer (5), the output port (c) of wavelength division multiplexer (5), gain fibre (6), isolator (7), filter (8), the input port (d) of beam splitter (9), first output port (e) of beam splitter (9) and saturable absorbing mirror (10), the first input end mouth (a) of pumping source (4) and described wavelength division multiplexer (5) is connected, and second output port (f) of described beam splitter (9) is the Laser output port.
2. polarization maintaining optical fibre mode-locked laser according to claim 1,, it is characterized in that described saturable absorbing mirror (10) is made of together saturable absorber and speculum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013102949083A CN103378541A (en) | 2013-07-15 | 2013-07-15 | Polarization maintaining optical fiber mode-locked laser |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102949083A CN103378541A (en) | 2013-07-15 | 2013-07-15 | Polarization maintaining optical fiber mode-locked laser |
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| CN103378541A true CN103378541A (en) | 2013-10-30 |
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| CN2013102949083A Pending CN103378541A (en) | 2013-07-15 | 2013-07-15 | Polarization maintaining optical fiber mode-locked laser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428976A (en) * | 2016-01-11 | 2016-03-23 | 中国工程物理研究院激光聚变研究中心 | Mode-locked fiber laser and pulse laser generation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1797874A (en) * | 2004-12-08 | 2006-07-05 | 保拉奥尼克斯公司 | Nonlinear polarization pulse mode locked fiber laser at a wavelength of one micron |
| US20080151945A1 (en) * | 2006-06-27 | 2008-06-26 | Polaronyx, Inc. | Ultrashort stable mode locked fiber laser at one micron by using polarization maintaining (PM) fiber and photonic bandgap fiber (PBF) |
| CN101740995A (en) * | 2009-12-11 | 2010-06-16 | 苏州大学 | Totally positive dispersion cavity mode-locked all-fiber laser |
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2013
- 2013-07-15 CN CN2013102949083A patent/CN103378541A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1797874A (en) * | 2004-12-08 | 2006-07-05 | 保拉奥尼克斯公司 | Nonlinear polarization pulse mode locked fiber laser at a wavelength of one micron |
| US20080151945A1 (en) * | 2006-06-27 | 2008-06-26 | Polaronyx, Inc. | Ultrashort stable mode locked fiber laser at one micron by using polarization maintaining (PM) fiber and photonic bandgap fiber (PBF) |
| CN101740995A (en) * | 2009-12-11 | 2010-06-16 | 苏州大学 | Totally positive dispersion cavity mode-locked all-fiber laser |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428976A (en) * | 2016-01-11 | 2016-03-23 | 中国工程物理研究院激光聚变研究中心 | Mode-locked fiber laser and pulse laser generation method |
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Application publication date: 20131030 |