CN101614879B - Narrow-band optical filter - Google Patents
Narrow-band optical filter Download PDFInfo
- Publication number
- CN101614879B CN101614879B CN2009100898343A CN200910089834A CN101614879B CN 101614879 B CN101614879 B CN 101614879B CN 2009100898343 A CN2009100898343 A CN 2009100898343A CN 200910089834 A CN200910089834 A CN 200910089834A CN 101614879 B CN101614879 B CN 101614879B
- Authority
- CN
- China
- Prior art keywords
- bragg grating
- light
- transmission
- body bragg
- narrow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The invention relates to a narrow-band optical filter, belonging to the technical field of solid laser. The narrow-band optical filter is a combined structure, and is combined by a transmission-type body Bragg grating and a reflection-type body Bragg grating. The track of the light in the narrow-type optical filter is described as follows: light irradiates to a combined body Bragg grating, firstly passes through the transmission-type body Bragg grating, wavelengths which meet the given condition occur diffraction, and other wavelengths occur transmission besides that; diffracted light enters reflection-type body Bragg grating and wavelengths meet the same given condition is diffracted by the reflection-type body Bragg grating; the diffracted light returns along the direction of the incident light, enters the transmission-type body Bragg grating again and is returned by the transmission-type body Bragg grating; and the returned light is the light with very narrow line-width, which is remained after being selected and needed by us. The narrow-band optical filter has the advantages of strong anti-interference capability, good stability, high efficiency, simple structure and the like.
Description
Technical field
The present invention is a kind of super narrow-band optical filter, belongs to the Solid State Laser technical field.
Technical background
The solid state laser range of application is very extensive, obtains to use comparatively widely in industries such as machinery, electronics, automobile, Aero-Space, iron and steel, shipbuilding, military projects at present, and occupy increasing proportion in gross national product (GNP).Wherein the laser of narrow linewidth (nanometer, micromicron magnitude) then has very important application owing to have longer coherent length with better beam quality in surveying instrument, information communication and military radar, becomes the important research and development direction of laser technology.
Wave filter is the term of a broad sense normally, is to be used for carrying out the instrument that wavelength is selected, and it can pick out required wavelength from numerous wavelength, and the light except that this wavelength will be rejected by.It can be used for that wavelength is selected, the noise filtering of image intensifer, gain balance, light multiplex/demultiplex etc.
The optical filter that is used for filtering is mainly based on interference of light principle.This interference may occur between the two-beam, such as the multiple-beam interference of Fabry one Perot cavity type, or based on interference of optical grating construction etc.
Present optical filter is applied to the information communication field mostly, and to obtain the report of narrow-band optical filter of micromicron magnitude laser output also rarely found and be applied to the Solid State Laser technical field.
Summary of the invention
In order to obtain the laser output of narrower micromicron magnitude, we have proposed a kind of narrow-band optical filter based on optical grating construction.This optical filter antijamming capability is strong, good stability, efficient height, simple in structure.
To achieve these goals, the present invention has taked following technical scheme.
The present invention adopts body Bragg grating (VBG) to select element as wavelength, and the body Bragg grating is considered to desirable spectrum and angle Selection device, has very high adjustability.Parameters such as incident angle, angle of diffraction, centre wavelength, spectrum (angle) width can be chosen easily according to different grating thickness, refractive index modulation degree and grating vector direction.The body Bragg grating has fabulous optical property, mainly shows: (1) spectral selectivity height, and the spectral selectivity of transmission-type and reflective body Bragg grating reaches 0.2nm and 0.02nm respectively, and angular selectivity reaches 0.1mrad and 0.5mrad; (2) be subjected to Temperature Influence little, centre wavelength is 10pm/K with variation of temperature; (3) loss is little, and the grating loss is less than 2.5%; (4) damage threshold height is 11J/cm
2(pulsewidth 1ns).
Narrow-band optical filter of the present invention is a kind of knockdown structure, it is to be combined by a transmission-type body Bragg grating (TBG) and a blocks of reflecting body Bragg grating (RBG), we can utilize the spectral selectivity of the angular selectivity and the reflective body Bragg grating of transmission-type body Bragg grating respectively like this, allow light pass through TBG earlier, and then pass through RBG, screen through twice selection like this, be equivalent to light by two optical filters, improve precision of filtering greatly, reached the purpose of pressing narrow linewidth.Light track in narrow band filter is described below: light incides the assembly Bragg grating, earlier through transmission-type body Bragg grating, satisfy the wavelength generation diffraction of Bragg condition, in addition then transmission of other wavelength, diffraction light enters reflective body Bragg grating, the wavelength that satisfies same Bragg condition is again by reflective body Bragg grating diffraction, diffraction light returns along the incident light direction and enters transmission-type body Bragg grating once more, returned by transmission-type body Bragg grating diffraction, back light is the very narrow light of our needed live widths of selecting back (after the filtering) remaining again.As narrow band filter is put into laserresonator, the light that then returns forms vibration in laserresonator, finally can obtain the laser output of a narrow linewidth.In addition, the important part that two blocks of gratings are used also is the spectral selectivity of RBG and TBG and the controllability of angular selectivity, we regulate two gratings, produce the relative detuning amount, utilize their common factor (public part) to carry out the selection of wavelength, so just obtain (micromicron magnitude) wave filter that bandwidth is narrower.
Advantage of the present invention: (1) adopts the body Bragg grating to select element as wavelength, the efficient height, and loss is low; (2) knockdown structure, precision of filtering height, narrow bandwidth (micromicron magnitude); (3) good stability, antijamming capability is strong; (4) simple in structure, realize easily.
Description of drawings
Fig. 1 is the structural representation of narrow band filter
Fig. 2 is the resonator cavity synoptic diagram of narrow band filter as output coupling mirror
Fig. 3 exports the interference pattern of laser
Among the figure: 1, transmission-type body Bragg grating (TBG), 2, reflective body Bragg grating (RBG), 3, incident light, 4, through the diffraction light of TBG, 5, through the transmitted light of TBG, 6, through the diffraction light of RBG, 7, through the transmitted light of RBG, 8, the laser of output, 9, laser total reflective mirror (R=100%), 10, aperture, 11, the Nd:YLF crystal, 12, wave filter.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
We as the output coupling mirror of laser instrument, have carried out experimental study with the narrow band filter (structural representation such as Fig. 1) of invention.Fig. 2 is the structural representation of laser instrument.Present embodiment adopts the Nd:YLF crystal as working-laser material, the cutting of C axle; Reflective body Bragg grating diffraction efficiency 70%, centre wavelength 1053nm, spectral selectivity 0.11nm (FWHM), size 5 * 5mm; Transmission-type body Bragg grating, maximum diffraction efficiency 98%, average diffraction efficiency 95%, 0.05 ° of angular selectivity (FWHM), centre wavelength 1053nm, size 5 * 5mm.By experiment, we have obtained the single longitudinal mode laser output (single longitudinal mode probability 100%) of 1053nm, and Fig. 3 utilizes the F-P etalon to measure the interference pattern of output laser.In this external experiment, the increase that we are artificial temperature (19 ℃～30 ℃), air-flow and vibration effect factor, laser instrument still can not be subjected to tangible influence with stable single longitudinal mode state operation, and this has shown that narrow band filter of the present invention also has high stability and antijamming capability.
Claims (1)
1. narrow-band optical filter, it is characterized in that: comprise a transmission-type body Bragg grating and a blocks of reflecting body Bragg grating, light incides transmission-type body Bragg grating earlier, satisfy the light generation diffraction of Bragg condition wavelength, transmission then takes place in the light of other wavelength, diffraction light enters reflective body Bragg grating, the light that satisfies same Bragg condition wavelength is again by reflective body Bragg grating diffraction, diffraction light returns along the incident light direction and enters transmission-type body Bragg grating once more, returned by transmission-type body Bragg grating diffraction, back light is the light of filtered needed narrow linewidth again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100898343A CN101614879B (en) | 2009-07-24 | 2009-07-24 | Narrow-band optical filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100898343A CN101614879B (en) | 2009-07-24 | 2009-07-24 | Narrow-band optical filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101614879A CN101614879A (en) | 2009-12-30 |
| CN101614879B true CN101614879B (en) | 2011-01-26 |
Family
ID=41494611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100898343A Expired - Fee Related CN101614879B (en) | 2009-07-24 | 2009-07-24 | Narrow-band optical filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101614879B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236646A (en) * | 2013-05-15 | 2013-08-07 | 苏州大学 | Volume Bragg grating mode-locked laser |
| CN103592776A (en) * | 2013-11-29 | 2014-02-19 | 苏州大学 | Two-dimensional angle selecting laser filter |
| CN105807449A (en) * | 2014-12-30 | 2016-07-27 | 福州高意通讯有限公司 | Tunable optical filter |
| CN104570378B (en) * | 2015-01-12 | 2017-02-22 | 苏州大学 | Broadband angle selection optical fiber and preparation method thereof |
| CN105425330A (en) * | 2015-12-17 | 2016-03-23 | 苏州大学 | Wave-front correction structure based on volume holographic device |
| CN105388546B (en) * | 2015-12-21 | 2017-09-05 | 中国工程物理研究院流体物理研究所 | A kind of concave surface volume holographic grating |
| CN110011169A (en) * | 2019-05-27 | 2019-07-12 | 青岛镭视光电科技有限公司 | Self-frequency-doubling laser generating device and laser |
| CN112186483A (en) * | 2020-10-20 | 2021-01-05 | 苏州大学 | Dual-wavelength resonant cavity based on volume Bragg grating |
| CN112505711B (en) * | 2020-11-24 | 2023-03-31 | 中国科学院光电技术研究所 | Device for performing laser radar spectrum filtering by using reflective volume Bragg grating |
| CN112834480B (en) * | 2020-12-31 | 2023-02-03 | 中国科学院合肥物质科学研究院 | Confocal Raman system for high-pressure normal-temperature and low-temperature experiments and measurement method thereof |
| CN113791416B (en) * | 2021-09-10 | 2023-12-05 | 苏州长光华芯光电技术股份有限公司 | Laser radar system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1370344A (en) * | 1999-08-13 | 2002-09-18 | 加利福尼亚技术学院 | In fiber frequency locker |
| CN1543024A (en) * | 2003-11-06 | 2004-11-03 | 中国科学院长春光学精密机械与物理研 | High power, narrow linewidth double-cladding fiber laser and making method |
| CN1659752A (en) * | 2002-06-13 | 2005-08-24 | 英特尔公司 | Method and apparatus for tunable wavelength conversion using a Bragg grating and a laser in a semiconductor substrate |
| US7039260B2 (en) * | 2002-02-27 | 2006-05-02 | Oki Electric Industry Co., Ltd. | Method and apparatus for generating carrier suppressed optical pulse train and grating device |
| CN101022206A (en) * | 2007-03-15 | 2007-08-22 | 华中科技大学 | Tunable semiconductor laser |
-
2009
- 2009-07-24 CN CN2009100898343A patent/CN101614879B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1370344A (en) * | 1999-08-13 | 2002-09-18 | 加利福尼亚技术学院 | In fiber frequency locker |
| US7039260B2 (en) * | 2002-02-27 | 2006-05-02 | Oki Electric Industry Co., Ltd. | Method and apparatus for generating carrier suppressed optical pulse train and grating device |
| CN1659752A (en) * | 2002-06-13 | 2005-08-24 | 英特尔公司 | Method and apparatus for tunable wavelength conversion using a Bragg grating and a laser in a semiconductor substrate |
| CN1543024A (en) * | 2003-11-06 | 2004-11-03 | 中国科学院长春光学精密机械与物理研 | High power, narrow linewidth double-cladding fiber laser and making method |
| CN101022206A (en) * | 2007-03-15 | 2007-08-22 | 华中科技大学 | Tunable semiconductor laser |
Non-Patent Citations (2)
| Title |
|---|
| A.V.Okishev.Spectral filtering in a diode-pumped Nd:YLF regenerative amplifier using a volume Bragg grating.《Optical Express》.OSA,2007,第15卷(第13期),8197-8202. * |
| Leonid B. Glebov, et al..Reflection of light by composite volume holograms: Fresnel corrections and Fabry-Perot spectral filtering.《J.Opt.Soc.Am.A》.Optical Society of America,2008,第25卷(第3期),751-764. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101614879A (en) | 2009-12-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101614879B (en) | Narrow-band optical filter | |
| Cheng et al. | Single-longitudinal-mode erbium-doped fiber ring laser based on high finesse fiber Bragg grating Fabry–Pérot etalon | |
| CN101764350B (en) | Optical fiber type tunable gas Raman laser light source based on hollow-core photonic crystal fiber | |
| JP5637669B2 (en) | Pulse width converter and optical amplification system | |
| Ciapurin et al. | Spectral combining of high-power fiber laser beams using Bragg grating in PTR glass | |
| Feng et al. | Switchable single-longitudinal-mode dual-wavelength erbium-doped fiber ring laser based on one polarization-maintaining fiber Bragg grating incorporating saturable absorber and feedback fiber loop | |
| Xia et al. | Stable triple-wavelength fiber ring laser with ultranarrow wavelength spacing using a triple-transmission-band fiber Bragg grating filter | |
| CN100413236C (en) | Comb filter for multiwavelength laser system | |
| Delgado-Pinar et al. | Wavelength-switchable fiber laser using acoustic waves | |
| CN117410806A (en) | High-power high-stability single-longitudinal-mode thulium-doped fiber laser and output method | |
| Feng et al. | A stable wavelength-tunable single frequency and single polarization linear cavity erbium-doped fiber laser | |
| CN202210616U (en) | Tunable multi-wavelength fiber laser based on 2-degree angle SMFBG | |
| KR100840707B1 (en) | Multi-wavelength raman fiber laser with asymmetric cavities and fiber optic communication system including the same | |
| JP5524381B2 (en) | Pulse width converter and optical amplification system | |
| Xia et al. | Tunable and switchable fiber ring laser among four wavelengths with ultranarrow wavelength spacing using a quadruple-transmission-band fiber Bragg grating filter | |
| Martins et al. | Comparison of Brillouin-Raman comb fiber laser in two different configurations | |
| Cui et al. | All-fiber wavelength-switchable orbital angular momentum (OAM) laser assisted by fiber Bragg grating and Fabry-Perot interferometer directly inscribed in erbium-doped fiber with femtosecond laser | |
| CN109888603A (en) | The flat multi-wavelength noise like light-pulse generator of three annular resonant cavities | |
| CN201639143U (en) | Dual-wavelength single longitudinal mode fiber laser based on sampling grating | |
| JPS6124686B2 (en) | ||
| RU192951U1 (en) | HIGH-BRIGHTNESS SOLID LASER WITH CONTROLLED SPECTRAL PROPERTIES | |
| Tarasov et al. | Polarization-independent acoustooptically tuned spectral filter with frequency shift compensation | |
| Jiang et al. | Switchable dual-wavelength erbium-doped fiber laser with high OSNR and stability using PM-FBG and CFBG | |
| US20140002893A1 (en) | Fiber amplifier system | |
| Long et al. | Sliced fiber Bragg grating used as a laser diode external cavity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110126 Termination date: 20120724 |