CN2030766U - Individual tuning multi-wavelength dye laser - Google Patents
Individual tuning multi-wavelength dye laser Download PDFInfo
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- CN2030766U CN2030766U CN 87210385 CN87210385U CN2030766U CN 2030766 U CN2030766 U CN 2030766U CN 87210385 CN87210385 CN 87210385 CN 87210385 U CN87210385 U CN 87210385U CN 2030766 U CN2030766 U CN 2030766U
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- dye cell
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Abstract
The utility model relates to an individual tuning multi-wavelength dye laser, belonging to the technical field of laser devices. The utility model comprises a polycylinder focusing lens, a dye cell, a beam expander with prism groups, a diffraction grating and rotating reflectors. Transverse pumps can be separated in space, which makes each laser wavelength oscillate in different gain zones; the individual tuning dye laser whose each wavelength has not gain competition and which has not the limiting of the frequency difference is formed. Any additional elements are not needed to be added; the utility model has the advantages of less optical energy loss, simple structure, convenient operation and good working stability and can be applied to the fields of laser spectroscopy, nonlinear optics interference metering, etc.
Description
The utility model belongs to laser device field.
At present, the tunable dye laser of practical application still is limited to the single wavelength running.Yet application in fields such as laser spectroscopy, nonlinear optics and interferometry and research constantly propose such demand, promptly require to use two and even the laser of a plurality of tunable wavelengths that certain synchronized relation is arranged.In order to utilize a dye laser synchronously to produce the tunable laser of two wavelength, people once proposed some designs.But the dye laser with single wavelength running is identical basically on structure and drive manner in these designs, i.e. single-column face focus lamp, individual layer dye cell and single gain district.For example U.S. Pat 3857109 and document Y.Saito, etal., Applied Oplics, 24(16), 2477(1985).These design, and have the defective of following three aspects.
(1) vibration of different wave length is in the same dyestuff gain region, thereby produces the competition of gain inevitably, makes the relative intensity of each oscillation wavelength be difficult to control.
(2) the tuning of each wavelength can not be independent fully, regulates a wavelength, and another will be affected.
(3) need too much insertion element, make in the chamber luminous energy loss excessive, complex structure is difficult to steady running.
The purpose of this utility model is just in order to overcome above-mentioned all defectives, by the horizontal pumping of apart, thereby each optical maser wavelength vibrated realize the independent tuning of the no frequency difference restriction of two and even a plurality of wavelength in different gain regions.
Design principle of the present utility model is to separate horizontal pumping by polycylinder condenser lens ［ 1 ］ implementation space, and each wavelength is done the apart vibration at dye cell ［ 2 ］, use prism group beam expander ［ 3 ］ to make the common beam-expanding element of each wavelength, use the common dispersion element of diffraction grating ［ 4 ］, and independent tuning is finished in rotating mirror ［ 5 ］, ［ 6 ］, ［ 7 ］, ［ 8 ］ respectively as each wavelength.Structurally, technical essential is
(1) pumping system: utilize parallel juxtaposed polycylinder condenser lens ［ 1 ］ to replace single-column face condenser lens, form a plurality of parallel pump light focal line of apart.
(2) dye cell: adopt corresponding interlayer dye cell ［ 2 ］ to replace the individual layer dye cell, make each pump light focal line inject different pond layers, thereby can use different or identical laser dye simultaneously.
(3) chromatic dispersion and tuning system: adopt transmission grating ［ 4 ］ to replace reflecting grating, utilize the space beam splitting and the positive and negative order of diffraction simultaneously, realize the vibration of different wave length and tuning respectively by different tail end speculum ［ 5 ］, ［ 6 ］, ［ 7 ］, ［ 8 ］.
Compared with the prior art the utility model has following outstanding advantage: because the residing dyestuff gain region of each oscillation wavelength spatially separates, eliminated gain competition fully; Owing to can use different laser dyes simultaneously, the frequency difference of each oscillation wavelength is not subjected to the restriction of homogencous dyes gain; Owing to adopt transmission grating chromatic dispersion and a plurality of tail end speculum independent tuning, eliminated pining down mutually of wavelength regulation fully; Need not to increase any add ons in the chamber, the luminous energy loss is little, and is simple in structure.In addition, the horizontal polycylinder lens combination of pumping can be processed into the cylinder of different numbers respectively, and dye cell is equipped with corresponding interlayer and tail end is equipped with corresponding speculum, and the number of laser oscillation wavelength just can be individual arbitrarily.
Enforcement of the present utility model can be forms such as dual wavelength, three-wavelength, four wavelength.Figure has provided the overall structure schematic diagram of four wavelength dye lasers of independent tuning.Performance in conjunction with the running of figure one explanation four wavelength.
A branch of pumping laser bundle (ultraviolet Nitrogen Lasers or excimer laser of for example, having 20 * 15 sectional areas with suitable cross section.For the less pumping laser bundle in cross section, for example, the YAG laser of frequency tripling expands bundle through telescope in advance.) through parallel juxtaposed four cylindrical focusing lens ［ 1 ］, realized that the side separates horizontal pumping laser bundle, and at inboard four the parallel focal lines up and down that form of the incidence window of dye cell ［ 2 ］.Dye cell is to have four layers of intermediate bulkheads, can fill simultaneously with four kinds of different (or identical) dye solutions.For example at the laser dye of visible light wave range: DCM, R6G, cumarin, fluorescein sodium.Adjust the dye cell position, the focal line of four pump lights is in respectively among four interlayers of dye cell.For the benefit of the expansion bundle in wide range territory and raising lasing efficiency suppress the amplified spontaneous emission background, realize the laser output of high-polarization, the Brewster angle prism group beam expander ［ 3 ］ that can adopt colour killing to loose.For four wavelength that make the wide range territory have a common dispersion element, four oscillation wavelength light beams are divided into four layers up and down, adopt transmission-type grating ［ 4 ］, require grating that high as far as possible diffraction efficiency is arranged, and use ± 1 grade.Four bar shaped tuned reflective of tail end mirror ［ 5 ］, ［ 6 ］, ［ 7 ］, ［ 8 ］ to rotation, are realized λ around the vertical Nogata
1, λ
2, λ
3, λ
4Four wavelength tunings, for above-mentioned four kinds of dyestuffs, the tuning of four wavelength can cover 4000-7000
The visual field.Last tuning wavelength is by outgoing mirror ［ 9 ］ output.
Claims (5)
1, a kind of tuning multi-wavelength dye laser, it is made up of lens, dye cell, beam expander, grating, speculum, it is characterized in that separating horizontal pumping by polycylinder condenser lens [1] implementation space, and in dye cell [2], form the gain region of a plurality of apart, the laser of each wavelength does to separate vibration by different spatial gain districts, the oscillating laser of each wavelength expands bundle by common beam expander [3], common diffraction grating [4] chromatic dispersion, and finish independent tuning by rotating mirror [5], [6], [7], [8] respectively.
2, laser according to claim 1 is characterized in that described polycylinder lens ［ 1 ］ are for parallel juxtaposed.
3, laser according to claim 1 is characterized in that described dye cell ［ 2 ］ has multilayer next door or individual layer, and fills with similar and different dyestuff.
4, laser according to claim 1 is characterized in that using ± 1 grade of transmission-type diffraction grating ［ 4 ］.
5, laser according to claim 1 is characterized in that adopting around tuned reflective mirror ［ 5 ］, ［ 6 ］, ［ 7 ］, ［ 8 ］ of vertical Nogata to rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87210385 CN2030766U (en) | 1987-07-25 | 1987-07-25 | Individual tuning multi-wavelength dye laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87210385 CN2030766U (en) | 1987-07-25 | 1987-07-25 | Individual tuning multi-wavelength dye laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2030766U true CN2030766U (en) | 1989-01-11 |
Family
ID=4825317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87210385 Withdrawn CN2030766U (en) | 1987-07-25 | 1987-07-25 | Individual tuning multi-wavelength dye laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2030766U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332482C (en) * | 2004-10-11 | 2007-08-15 | 中国科学院电子学研究所 | Unstable laser cavity tunned by grating |
| CN109950784A (en) * | 2019-04-10 | 2019-06-28 | 上海禾赛光电科技有限公司 | Laser and laser radar |
| CN112202043A (en) * | 2020-08-31 | 2021-01-08 | 西安电子科技大学 | Coumarin C440 and C460 co-doped dye tunable laser |
-
1987
- 1987-07-25 CN CN 87210385 patent/CN2030766U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332482C (en) * | 2004-10-11 | 2007-08-15 | 中国科学院电子学研究所 | Unstable laser cavity tunned by grating |
| CN109950784A (en) * | 2019-04-10 | 2019-06-28 | 上海禾赛光电科技有限公司 | Laser and laser radar |
| CN112202043A (en) * | 2020-08-31 | 2021-01-08 | 西安电子科技大学 | Coumarin C440 and C460 co-doped dye tunable laser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |