CN104242038A - Optical fiber laser frequency doubling device - Google Patents
Optical fiber laser frequency doubling device Download PDFInfo
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- CN104242038A CN104242038A CN201410489383.3A CN201410489383A CN104242038A CN 104242038 A CN104242038 A CN 104242038A CN 201410489383 A CN201410489383 A CN 201410489383A CN 104242038 A CN104242038 A CN 104242038A
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- light
- frequency
- fiber laser
- speculum
- optical fiber
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- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
Laser output by a common optical fiber laser device is non-polarized light. In the nonlinear crystal frequency doubling process, the requirement for the polarization state of base frequency light is high, and therefore the effect can not be achieved only by embedding a frequency doubling crystal into the laser device. A good scheme needs to be sought for achieving frequency doubling of the optical fiber laser device, expanding the wavelength of the optical fiber laser device, and promoting the performance of the optical fiber laser device.
Description
Technical field
The present invention relates to a kind of optical-fiber laser field, particularly the laser frequency multiplier that uses of a kind of applicable fiber laser.
Background technology
Since within 1962, upper first semiconductor laser in boundary comes out, laser has had the development of more than 40 years history.Mainly concentrate on short pulse to the research of laser in early days to export and expansion tunable wavelength scope aspect.First the feasibility of erbium-doped fiber amplifier is demonstrated in order to adapt to the flourish needs of optical fiber communication Southampton University of Southamptons in 1987 and U.S.'s Bell Laboratory.Nowadays it has occupied critical role in optical fiber communication.Now, along with development and the extensive use of optical fiber telecommunications system, supper-fast optoelectronics, nonlinear optics, the application study in the various fields such as light sensing, obtains unprecedented flourish.Because fiber laser to have on beam quality and absolute predominance in conversion efficiency and its complete Maintenance free and volume is little, stability high, become the representative of third generation laser technology.
Fiber laser range of application widely, comprises laser fiber communication, laser space remote communication, industrial shipbuilding, automobile making, laser engraving laser marking laser cutting, prints roller processed, metal and nonmetal boring/cut/welding (brazing, hardening, covering and the degree of depth are welded), the construction of military and national defense safety, medicine equipment instrument and equipment, large foundation etc.
In recent years, the fast development of fiber laser also made the expectation of market to it more and more higher, was not only the requirement to power, also increased the requirement of wavelength thereupon.As everyone knows, current fiber laser is that wavelength mainly concentrates on infrared band, and for mark in laser application, some accurate mark just needs to use 532nm, the even laser of 355nm, so just can reach a good mark effect.Realizing frequency multiplication by nonlinear crystal is expand fiber laser wavelength good method, but we know, the laser that fiber laser exports is non-polarized light, and in nonlinear crystal frequency multiplication process, require high to fundamental frequency polarisation of light, therefore the simple frequency-doubling crystal that embeds in laser can not realize this effect, and we need to seek the frequency multiplication that a good scheme realizes fiber laser, expand fiber laser wavelength, promote its performance.
Summary of the invention
In order to overcome Problems existing in traditional fiber laser, the invention provides a kind of fiber laser frequency multiplier, comprise PBS prism, three fundamental frequency light speculums, frequency doubled light speculum, nonlinear crystal and 1/2 wave plates, it is characterized in that: described frequency doubled light speculum is arranged between nonlinear crystal in P light light path and PBS prism, described frequency doubled light speculum reflection frequency doubled light and allow fundamental frequency light transmission, described fundamental frequency light speculum reflection fundamental frequency light and allow frequency doubled light transmission; Described 1/2 wave plate is arranged between PBS prism and fundamental frequency light speculum or between fundamental frequency light speculum; Described fundamental frequency light speculum is arranged in S light light path, is that miter angle is arranged with S light light path.
The invention has the advantages that and can realize optical-fiber laser frequency multiplication, conversion efficiency is high, system stable output.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the present invention is further detailed explanation:
Fig. 1 is the structural representation of a kind of fiber laser frequency multiplier of the present invention.
Wherein
for PBS,
for frequency doubled light speculum,
for fundamental frequency light speculum,
for nonlinear crystal,
it is 1/2 wave plate.
Embodiment
Embodiment one: when the fundamental frequency light of fiber laser exports, through PBS prism
, be divided into p light and s light, frequency doubled light speculum
plate the film system of fundamental frequency light through the reflection of, frequency doubled light, s light passes through
direct incident nonlinear crystal
, we select nonlinear crystal
polarization requires to conform to s light, and therefore s light enters rear direct formation frequency doubled light output.And p light is by fundamental frequency light speculum
after, due to half-wave plate
effect, polarization state changes, and becomes s light, then by fundamental frequency light speculum
with
, enter nonlinear crystal equally
carry out frequency multiplication, frequency doubled light is by frequency doubled light speculum
reflection exports.Wherein, speculum
plating fundamental frequency light is high anti-, frequency doubled light high transmittance film system.By the light path of conditional systems, export after making two bundle frequency doubled lights and bundle, finally realize the frequency multiplication that optical-fiber laser is efficient, stable.
Claims (4)
1. a fiber laser frequency multiplier, comprises PBS prism, three fundamental frequency light speculums, frequency doubled light speculum, nonlinear crystal and 1/2 wave plates, it is characterized in that: described frequency doubled light speculum is arranged between nonlinear crystal in P light light path and PBS prism.
2. according to a kind of fiber laser frequency multiplier according to claim 1, it is characterized in that: described frequency doubled light speculum reflection frequency doubled light and allow fundamental frequency light transmission, described fundamental frequency light speculum reflection fundamental frequency light and allow frequency doubled light transmission.
3. require described a kind of fiber laser frequency multiplier according to right 1, it is characterized in that: described 1/2 wave plate is arranged between PBS prism and fundamental frequency light speculum or between fundamental frequency light speculum.
4. requiring described a kind of fiber laser frequency multiplier according to right 1, it is characterized in that: described fundamental frequency light speculum is arranged in S light light path, is that miter angle is arranged with S light light path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410489383.3A CN104242038A (en) | 2014-09-24 | 2014-09-24 | Optical fiber laser frequency doubling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410489383.3A CN104242038A (en) | 2014-09-24 | 2014-09-24 | Optical fiber laser frequency doubling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104242038A true CN104242038A (en) | 2014-12-24 |
Family
ID=52229643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410489383.3A Pending CN104242038A (en) | 2014-09-24 | 2014-09-24 | Optical fiber laser frequency doubling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104242038A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2557328A (en) * | 2016-12-07 | 2018-06-20 | Csir | Laser apparatus and method having plural excitation sources with associated beam splitting arrangements for adaptive control |
Citations (9)
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| US6137820A (en) * | 1995-02-15 | 2000-10-24 | Carl-Zeiss-Stiftung | Optically pumped laser |
| US20020179912A1 (en) * | 2001-01-08 | 2002-12-05 | Lightbit Corporation, A Corporation Of The State Of Delaware | Polarization-insensitive integrated wavelength converter |
| US20040201880A1 (en) * | 2003-04-10 | 2004-10-14 | Lee Gregory S. | Double-pass polarization-independent signal processor and on-axis processing method |
| US20070053403A1 (en) * | 2005-09-02 | 2007-03-08 | Laser Quantum Ltd. | Laser cavity pumping configuration |
| US20080175296A1 (en) * | 2005-06-10 | 2008-07-24 | Trumpf Laser Gmbh + Co. Kg | Laser system comprising a number of longitudinally pumped laser-active solid bodies |
| CN102064459A (en) * | 2010-11-26 | 2011-05-18 | 中国电子科技集团公司第十一研究所 | Pump device with crystals having linear polarization absorption characteristic |
| CN102136670A (en) * | 2011-01-27 | 2011-07-27 | 山西大学 | Double-end end-pumped solid laser based on polarization coupling |
| CN102570266A (en) * | 2010-12-31 | 2012-07-11 | 北京国科世纪激光技术有限公司 | Single-diode double-end pumping laser |
| CN103701029A (en) * | 2013-12-30 | 2014-04-02 | 福建福晶科技股份有限公司 | Fiber laser frequency multiplier |
-
2014
- 2014-09-24 CN CN201410489383.3A patent/CN104242038A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6137820A (en) * | 1995-02-15 | 2000-10-24 | Carl-Zeiss-Stiftung | Optically pumped laser |
| US20020179912A1 (en) * | 2001-01-08 | 2002-12-05 | Lightbit Corporation, A Corporation Of The State Of Delaware | Polarization-insensitive integrated wavelength converter |
| US20040201880A1 (en) * | 2003-04-10 | 2004-10-14 | Lee Gregory S. | Double-pass polarization-independent signal processor and on-axis processing method |
| US20080175296A1 (en) * | 2005-06-10 | 2008-07-24 | Trumpf Laser Gmbh + Co. Kg | Laser system comprising a number of longitudinally pumped laser-active solid bodies |
| US20070053403A1 (en) * | 2005-09-02 | 2007-03-08 | Laser Quantum Ltd. | Laser cavity pumping configuration |
| CN102064459A (en) * | 2010-11-26 | 2011-05-18 | 中国电子科技集团公司第十一研究所 | Pump device with crystals having linear polarization absorption characteristic |
| CN102570266A (en) * | 2010-12-31 | 2012-07-11 | 北京国科世纪激光技术有限公司 | Single-diode double-end pumping laser |
| CN102136670A (en) * | 2011-01-27 | 2011-07-27 | 山西大学 | Double-end end-pumped solid laser based on polarization coupling |
| CN103701029A (en) * | 2013-12-30 | 2014-04-02 | 福建福晶科技股份有限公司 | Fiber laser frequency multiplier |
Non-Patent Citations (1)
| Title |
|---|
| J.LIN等: "Nd:GdVO4 self-Raman laser using double-end polarised pumping at 880 nm for high power infrared and visible output", 《APPLIED PHYSICS B》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2557328A (en) * | 2016-12-07 | 2018-06-20 | Csir | Laser apparatus and method having plural excitation sources with associated beam splitting arrangements for adaptive control |
| US10084279B2 (en) | 2016-12-07 | 2018-09-25 | Csir | Laser apparatus and method having plural excitation sources with associated beam splitting arrangements for adaptive control |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141224 |