CN105281188A - White light laser - Google Patents
White light laser Download PDFInfo
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- CN105281188A CN105281188A CN201410357275.0A CN201410357275A CN105281188A CN 105281188 A CN105281188 A CN 105281188A CN 201410357275 A CN201410357275 A CN 201410357275A CN 105281188 A CN105281188 A CN 105281188A
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- white light
- gain media
- laser
- light source
- light laser
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 229920002521 macromolecule Polymers 0.000 claims description 2
- 239000002861 polymer material Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 238000007598 dipping method Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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- Lasers (AREA)
Abstract
The invention relates to a white light laser. The white light laser comprises an LED pump light source, a white light gain medium and a laser resonant cavity; and the white light gain medium is disposed in the laser resonant cavity, and the LED pump light source is disposed at the periphery of the white light gain medium and is focused on the white light gain medium. Through implementation of the white light laser, continuous or pulse white light laser light can be generated; and because off-the-shelf LEDs are used, cost of the white light laser is greatly reduced, and high conversion efficiency can be achieved. The laser has the advantages of simple structure and high stability, and is suitable for wide promotion and use in industry.
Description
Technical field
The present invention relates to laser technique, in particular, relate to a kind of white light laser.
Background technology
White light laser, owing to having spatial coherence and wider transmitted bandwidth (400 to 700 nanometer), is thus widely used in three-dimensional light tweezer, true color 3D hologram, manipulation microscopic objects, fluorescence microscope, replacement white light LEDs as illumination etc.
Different from general mixed light, by multiple one-wavelength laser mixing (red, green, blue), be difficult to form white light laser, this is because the laser of different frequency can influence each other; Usually the method realizing white light laser is at present by nonlinear optical technique, and this can make the tranmitting frequency of laser expand to the scope of white light.But this method needs higher pump power (such as using high-power femto-second laser as pump light), and the efficiency of conversion is very low, makes the white light laser that can only obtain pulsed in this way be difficult to realize continuous print white light laser simultaneously.
Summary of the invention
The object of the invention is to, need high-power driving, conversion efficiency low for existing white light laser and the defect of continuous white light laser cannot be obtained, a kind of novel white light laser is provided, to overcome above-mentioned problem.
Solution of the above problems of the present invention is: construct a kind of white light laser, comprises LED pump light source, white light gain media and laserresonator; White light gain media is arranged in laserresonator, and LED pump light source is arranged on the surrounding of white light gain media and focuses on white light gain media.
White light laser of the present invention, white light gain media is the carbon nano-structured macromolecule polymer material of Uniform Doped.
White light laser of the present invention, carbon nano-structured is the carbon quantum dot of diameter 1.5 to 3.5 nanometer.
White light laser of the present invention, also comprise concave mirror, concave mirror is right against LED pump light source and white light gain media, after the light of LED pump light source focuses on white light gain media, be transmitted to concave mirror, the light of transmission focuses on white light gain media by concave mirror.
White light laser of the present invention also comprises the cylindrical lens be arranged between LED pump light source and white light gain media, and the emergent light of LED pump light source focuses on white light gain media by cylindrical lens.
White light laser of the present invention, laserresonator comprises and being arranged on outside white light gain media, and is parallel to completely reflecting mirror and the half-reflecting mirror of white light gain media end flat, and white light gain media is located between two pieces of parallel reflective faces.
White light laser of the present invention, in two pieces of plane mirrors, one piece is completely reflecting mirror, and another block is half-reflecting mirror.
White light laser of the present invention, LED pump light source is LED array.
Implement white light laser of the present invention, white light laser that is continuous or pulse can be produced, simultaneously owing to using industrial mass-produced standard LED (off-the-shelfLED), considerably reduce the cost of white light laser, and can high conversion efficiency be realized.This laser structure is simple, and stability is high, is applicable to industrial large-scale popularization and uses.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be described, wherein:
Fig. 1 is the structural representation of white light laser embodiment of the present invention;
Fig. 2 is the bright dipping light intensity of white light laser under different pump intensity;
Fig. 3 is the bright dipping spectral characteristic of white light laser.
In Fig. 1: 100, LED pump light source; 200, white light gain media; 300, cylindrical lens; 400, completely reflecting mirror; 500, concave mirror; 600, half-reflecting mirror.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is carried out.
Be illustrated in figure 1 the embodiment of white light laser of the present invention, in the present embodiment, LED pump light source 100 produces pump light, pump light is through the refraction of cylindrical lens 300, focus on white light gain media 200, white light gain media 200 is subject to exciting of pump light, produces stimulated emission.In order to improve the energy of stimulated emission, in the position for LED pump light source 100 and white light gain media 200, concave mirror 500 is set, after the light of LED pump light source 100 focuses on white light gain media 200, be transmitted to concave mirror 500, the light of transmission focuses on white light gain media 200 by concave mirror 500 again.Order is excited to excite enhancing.
In this enforcement, white light gain media 200 is for being uniformly distributed the high molecular polymer of carbon quantum dot, and the diameter of carbon quantum dot is 1.5 to 3.5 nanometers.Be subject to exciting of LED pump light source 100, produce the be excited exciting light of wavelength in 380 to 700 nanometers.Repeatedly amplify in white light gain media 200 to make to be excited exciting light, the high molecular polymer being uniformly distributed carbon quantum dot is made cylinder, a completely reflecting mirror 400 and a half-reflecting mirror 600 are set in cylinder two ends, the two is parallel to the plane at high molecular polymer cylinder two ends, form F-P cavity (FabryPerot), stimulated luminescence is also shaken amplification in the gain medium by two plane mirror roundtrip, produces white laser when laser arrives some strength from the outgoing of half-reflecting mirror (600) one end.
In the present embodiment, the LED light source employing standard is as pumping source, and compared to the white light laser of prior art, power consumption is lower, effectively reduces the volume of laser and avoids the use complexity needing debugging laserresonator to bring.Because the high molecular polymer being uniformly distributed carbon quantum dot can produce, to be excited excitation wavelength be the exciting light of being excited of 380 to 700 nanometers, and therefore this embodiment can produce continuously or the white light laser of pulse outgoing.
Fig. 2 is the outgoing characteristic of white light laser under the pump light of different capacity of invention.When pump power does not reach the pumping threshold of being excited to excite (the K point in Fig. 2), the light intensity of outgoing substantially by not affected by pump light, as a point in Fig. 2; After more than K point, white light laser starts to occur emergent light, as the b point in Fig. 2; After this along with the enhancing of pump light, the white light laser of outgoing also synchronously strengthens, as the c point in Fig. 2.Fig. 3 gives a, b, c emergent light spectral characteristic of tri-some correspondences.When white light laser normally works time, the light of its outgoing is in 380 to 650 nanometer continuous distribution, and the light of therefore outgoing becomes white light.
These are only the specific embodiment of the invention, scope of the present invention can not be limited with this, the equalization change that those skilled in the art in the art do according to this creation, and the change that those skilled in that art know, all still should belong to the scope that the present invention is contained.
Claims (6)
1. a white light laser, is characterized in that, comprises LED pump light source (100), white light gain media (200) and laserresonator; White light gain media (200) is arranged in laserresonator, and LED pump light source (100) is arranged on the surrounding of white light gain media (200) and focuses on white light gain media (200).
2. white light laser according to claim 1, is characterized in that, white light gain media (200) is the carbon nano-structured macromolecule polymer material of Uniform Doped.
3. white light laser according to claim 2, is characterized in that, described carbon nano-structured be the carbon quantum dot of diameter 1.5 to 3.5 nanometer.
4. white light laser according to claim 1, it is characterized in that, white light laser also comprises concave mirror (500), concave mirror (500) is right against LED pump light source (100) and white light gain media (200), after the light of LED pump light source (100) focuses on white light gain media (200), be transmitted to concave mirror (500), the light of transmission focuses on white light gain media (200) by concave mirror (500).
5. white light laser according to claim 4, it is characterized in that, white light laser also comprises the cylindrical lens (300) be arranged between LED pump light source (100) and white light gain media (200), and the emergent light of LED pump light source (100) focuses on white light gain media (200) by cylindrical lens (300).
6. according to the arbitrary described white light laser of claim 1-5, it is characterized in that, laserresonator comprises and is arranged on outside white light gain media, and be parallel to completely reflecting mirror (400) and the half-reflecting mirror (600) of white light gain media end flat, white light gain media is located between two pieces of parallel reflective faces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410357275.0A CN105281188A (en) | 2014-07-24 | 2014-07-24 | White light laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410357275.0A CN105281188A (en) | 2014-07-24 | 2014-07-24 | White light laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105281188A true CN105281188A (en) | 2016-01-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410357275.0A Pending CN105281188A (en) | 2014-07-24 | 2014-07-24 | White light laser |
Country Status (1)
| Country | Link |
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| CN (1) | CN105281188A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516806A (en) * | 2016-06-16 | 2017-12-26 | 中国科学院物理研究所 | Produce the device and non-linear laser crystal preparation method of supercontinuum laser |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102480101A (en) * | 2010-11-30 | 2012-05-30 | 中国科学院光电研究院 | Light emitting diode (LED) pumping laser device |
| US20130308332A1 (en) * | 2010-08-11 | 2013-11-21 | Schott Ag | Laser-based white light source |
-
2014
- 2014-07-24 CN CN201410357275.0A patent/CN105281188A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130308332A1 (en) * | 2010-08-11 | 2013-11-21 | Schott Ag | Laser-based white light source |
| CN102480101A (en) * | 2010-11-30 | 2012-05-30 | 中国科学院光电研究院 | Light emitting diode (LED) pumping laser device |
Non-Patent Citations (1)
| Title |
|---|
| W.F.ZHANG ET AL.: "Wide-bandwidth lasing from C-dot/epoxy nanocomposite Fabry-Perot cavities with ultralow threshold", 《J.MATER.CHEM.C》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516806A (en) * | 2016-06-16 | 2017-12-26 | 中国科学院物理研究所 | Produce the device and non-linear laser crystal preparation method of supercontinuum laser |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160127 |
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| WD01 | Invention patent application deemed withdrawn after publication |