CN108709164A - A kind of light source output Wavelength tuning device - Google Patents
A kind of light source output Wavelength tuning device Download PDFInfo
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- CN108709164A CN108709164A CN201810465718.6A CN201810465718A CN108709164A CN 108709164 A CN108709164 A CN 108709164A CN 201810465718 A CN201810465718 A CN 201810465718A CN 108709164 A CN108709164 A CN 108709164A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/08—Controlling the distribution of the light emitted by adjustment of elements by movement of the screens or filters
Abstract
The invention belongs to light source device equipment technical fields,It is related to a kind of light source output Wavelength tuning device,A transparent window is devised on the circumference of filter wheel,A testing light source and photodetector are installed in the coaxial optical path for correspond to transparent window,For wavelength to be accurately positioned,Filter wheel and light source,The polarizer,Lens combination,Optical fiber collimator,Optical patchcord and Simple mechanical holder combination are fabricated to light source output Wavelength tuning device,Filter wheel rotation is driven by motor,To change the optical filter to work in light path lens combination-optical fiber collimator,Different wavelength is accurately positioned,The polarised light that polarizer obtains in the natural light that light source is sent out forms directional light after lens combination,Directional light is broadband light wave,Broadband light wave is by becoming narrowband light wave after optical filter,Narrowband light wave is received and be coupled into optical patchcord by optical fiber collimator,Optical patchcord exports the wavelength from the narrowband light wave of filter transmission.
Description
Technical field：
The invention belongs to light source device equipment technical fields, are related to a kind of light source output Wavelength tuning device, using optical filtering
The bandpass filter of different wave length is placed in the different transparent windows of optical filtering rim of wheel circumference, utilizes filter wheel by wheel construction
The function of selection output wavelength is realized in rotation.
Background technology：
Light source is a physical terminology, and the object between universe has plenty of luminous, has plenty of non-luminous, oneself can send out
Light and the object to shine are called light source, and the sun, the electric light of turn on, the candle etc. that is burning all are light sources.Light source it is main
Type includes lighting source, radiating light source, stabilized light source, backlight, LED light source and electric light source.Wavelength tunable light source in the market
Grating monochromator is mainly used, monochromator is similar to the structure of spectrum spectrograph, to isolate one from broadband radiation beam
The electromagnetic radiation of serial narrow band, it has prism monochromator and light with the photographic plate on exit slit substitution spectrograph focal plane
Grid monochromator.Wherein grating monochromator is applied than wide：In links such as scientific research, production, Quality Controls.Either penetrate absorption light
Spectrum or fluorescence spectrum, Raman spectrum, how to obtain Single wavelength radiation is indispensable means.Since modern monochromator can
With very wide spectral region (UV-IR), high spectral resolution (arrives 0.001nm), automatic length scanning, complete computer control
Function is easily fused to high-performance Auto-Test System with other peripheral equipments, using computer automatically scanning multiple-grating monochrometer
As the first choice of spectral investigation.When a branch of combining light enters the entrance slit of monochromator, pooled first by optical alignment mirror
Directional light, then by diffraction grating dispersion be separated wavelength (color).The angle that grating is left using each wavelength is different, by
Focusing mirror reimaging exit slit.It can accurately change outgoing wavelength by computer control.
A kind of light-mixing structure of full spectrum multi-wavelength tunable light source disclosed in Chinese patent 201520195113.1 includes：One
Ontology, inside be formed with one first optical channel and one second optical channel, wherein：First optical channel is in the surface of the ontology
On be formed with a first entrance and a first outlet；Second optical channel enters in being formed with one second on the surface of the ontology
Mouthful, and second optical channel is connected to first optical channel；One first light source, to emit one first light, first light
It injects from the first entrance of first optical channel, and is projected in the first outlet；And a second light source, to emit one second
Light, second light are also projected in the first outlet from after second entrance injection；Chinese patent 201210594029.8 is public
A kind of wavelength automated calibration system for the Wavelength tunable light source opened includes：Wavelength tunable light source device, is used for injection focusing device
The injection for carrying the injection focusing device focuses fixed frame, detection focusing device, for carrying the detection focusing device
Detection focuses the optical fiber and signal pickup assembly of fixed frame, the connection injection focusing device and the detection focusing device；
It is characterized in that, the wavelength automated calibration system further includes：Light between the detection focusing device and the optical fiber
On the road, the optical filter switching mechanism configured with spike filter and light hole；It, will be described narrow using the optical filter switching mechanism
It is placed in the light path between the detection focusing device and the optical fiber with optical filter, after optical signal is by the spike filter
Only allow optical filter nominal wavelength to pass through, when scanning to can detect for the optical signal of the optical filter nominal wavelength when, it is described
The optical source wavelength that Wavelength tunable light source is sent out is the optical filter nominal wavelength of the spike filter, described adjustable to complete
The wavelength of wavelength light source is calibrated automatically；And the light hole is placed in the detection using the optical filter switching mechanism at this time
In light path between focusing device and the optical fiber, it is ensured that do not change the spike filter be placed in the detection focusing device with
Light path between the optical fiber carrys out detection parameters；It is a kind of disclosed in Chinese patent 200810186900.4 to be changed using multiple resonator
Become the Wavelength tunable light source of optical wavelength, multiple resonator includes two or more couplings with different optical path lengths to each other
Resonator, which includes：Single or more light changes component, for changing the transmissison characteristic of resonator；
Light sensor component is converted into electric work by detecting to obtain from the light of each resonator output in two or more resonators
The luminous power of rate value；And control unit, the luminous power of the cumulative each resonator detected by light sensor component are become by light
Change the variation of component controls transmissison characteristic to make the sum of cumulative luminous power become minimum；There are in equipment for above-mentioned patented product
Portion's structure and light path complexity, overall volume are big and expensive, the problem of can not promoting the use of.Therefore, R & D design is a kind of
Small volume and less weight, the simple light source output Wavelength tuning device of cheap and light path have good society and economic value, application
It has a extensive future.
Invention content：
It is a kind of small volume and less weight of R & D design, cheap it is an object of the invention to overcome disadvantage of the existing technology
With the simple light source output Wavelength tuning device of light path, the bandpass filter of different wave length is placed in optical filtering rim of wheel circumference not
With in transparent window, the function of selection output wavelength is realized using the rotation of filter wheel.
To achieve the goals above, the agent structure of light source output Wavelength tuning device of the present invention include pedestal,
No.1 holder, No. two holders, No. three holders, No. four holders, No. five holders, light source, the polarizer, lens combination, motor, optical filterings
Wheel, through-hole, optical filter, transparent window, optical fiber collimator and optical patchcord；From a left side on the upper surface of the pedestal of rectangular plate-like structure
Be disposed with No.1 holder, No. two holders, No. three holders, No. four holders and No. five holders to the right side, pedestal respectively with No.1 branch
Frame, No. two holders, No. three holders, No. four holders and the connection of No. five support bracket bolt formulas, the top of No.1 holder are equipped with light source, and two
The top of number holder is equipped with the polarizer, and the top of No. three holders is equipped with lens combination, and the agent structure of lens combination includes
Heavy caliber collimating lens, focusing lens and small-bore collimation lens, heavy caliber collimating lens, focusing lens and small-bore collimation are saturating
Mirror arrays from left to right, and it is straight that the center of heavy caliber collimating lens, focusing lens and small-bore collimation lens is located at same
On line, the tops of No. four holders is equipped with motor, and the filter wheel of motor and circular configuration connects, on the circumference of filter wheel equidistantly
The through-hole of n-2 circular configuration is offered, the different optical filtering of the wavelength of circular sheet-like structures is installed in wherein n-1 through-hole
Piece is equipped with the transparent window of circular configuration in remaining 1 through-hole, and the top of No. five holders is equipped with optical fiber collimator, optical fiber
The outlet of collimator is connect with optical patchcord；The center of lens combination, one of optical filter and optical fiber collimator is in same
In horizontal optical path.
The material of pedestal of the present invention, No.1 holder, No. two holders, No. three holders, No. four holders and No. five holders
It is stainless steel；Light source be include deuterium lamp, halogen tungsten lamp, xenon lamp, light emitting diode, super-radiation light source, semiconductor optical amplifier,
The wide spectrum light source of fiber amplifier, non-single-mode optics and composite light source from space；The polarizer can obtain partially from natural light
Shake light；Heavy caliber collimation lens in lens combination is the collimation lens that clear aperture is 0.1 millimeter to 7 centimetres, condenser lens
For transmission-type lens, small-bore collimation lens is the collimation lens that clear aperture is 0.01 millimeter to 2 centimetres；Motor is the electricity that slows down
Machine, servo motor or DC stepping motor, the rotation of motor can drive the rotation of filter wheel to select light path lens combination-
The optical filter of different wave length in optical fiber collimator；The quantity of through-hole on filter wheel is according to the optical filter of required different wave length
Quantity is chosen, the quantity of through-hole than optical filter quantity more than 1；Optical filter is bandpass-type optical filter；Transparent window is used as and sends out
The testing light source of other band wavelengths passes through window；Optical fiber collimator parallel can be optically coupled to extraneous in single mode optical fiber；
Optical patchcord is single mode optical fiber.
Light source output Wavelength tuning device of the present invention in use, by the through-hole number consecutively on filter wheel be 0,1,
2,3 ... N, and it is placed in the through-hole that number is 1,2,3 ... N the optical filter of different wave length, the corresponding wave of optical filter successively
Long is respectively λ1, λ2……λN, the through-hole without being placed in optical filter that number is 0 is transparent window, is filled in the left side of transparent window
If testing light source, photodetector is installed on the right side of transparent window, the wavelength of testing light source is λ0, testing light source and photoelectricity are visited
The light path for surveying device is located on same axis, and testing light source includes laser, light emitting diode, lamp and natural light, wavelength X0It is
A wavelength being included in testing light source spectral band, photodetector being capable of a length of λ of probing wave0Light；Opening motor makes
It drives filter wheel rotation, waits for the center of lens combination, the optical filter in No. 1 through-hole and optical fiber collimator in same horizon light
When road, light source, the natural light that light source is sent out are opened, the polarizer obtains the polarised light in natural light, and polarised light passes through heavy caliber
Directional light is coupled as by heavy caliber collimation lens when collimation lens, directional light is focused lens focus when passing through condenser lens be small
The light of light field range is coupled as small light field model when the light of small light field range passes through small-bore collimation lens by small-bore collimation lens
The directional light of the directional light enclosed, small light field range is broadband light wave, and broadband light wave becomes after the optical filter in No. 1 through-hole
Narrowband light wave, narrowband light wave are received and be coupled into optical patchcord by optical fiber collimators, and optical patchcord is exported from No. 1 through-hole
The wavelength X of the narrowband light wave of filter transmission1；Period is said when photodetector detects the optical signal that testing light source is sent out
For optical filter in bright No. 1 through-hole on the optical axis of light path lens combination-optical fiber collimator, what optical patchcord exported is that wavelength is λ1
Optical signal, the time that filter wheel uniform rotation one is enclosed is T, and filter wheel has N number of through-hole, optical patchcord defeated every the time of T/N
It is the corresponding optical signal of wavelength X to go out optical signal a P, P, and the optical signal that photodetector detects is P0, P0For wavelength X0It is corresponding
Optical signal, then wavelength X, optical signal P and P0Shown in correspondence following table with time T：
, it can be seen that wavelength X can be accurately positioned in testing light source and photodetector from upper table, moreover it is possible to it
He is accurately positioned wavelength, by control time T, the position of filter wheel upper filter can be controlled, with flexible modulation light source
Output wavelength.
Compared with prior art, the present invention a transparent window is devised on the circumference of filter wheel, it is transparent corresponding to
A testing light source and photodetector are installed in the coaxial optical path of window, for wavelength to be accurately positioned, filter wheel and light source rise
Inclined device, lens combination, optical fiber collimator, optical patchcord and Simple mechanical holder combination are fabricated to light source output wavelength regulation dress
It sets, filter wheel rotation is driven by motor, to change the optical filter to work in light path lens combination-optical fiber collimator, it is accurate to come
Different wavelength is positioned, the polarised light that polarizer obtains in the natural light that light source is sent out forms directional light after lens combination,
Directional light is broadband light wave, and broadband light wave is received by becoming narrowband light wave, narrowband light wave after optical filter by optical fiber collimator
And be coupled into optical patchcord, optical patchcord exports the wavelength from the narrowband light wave of filter transmission, by controlling filter wheel
Rotation time, the output wavelength for freely adjusting light source can be reached；Its is simple in structure, small volume and less weight, and low manufacture cost can
The output wavelength of wavelength and flexible modulation light source is accurately positioned.
Description of the drawings：
Fig. 1 is the agent structure principle schematic of the present invention.
Fig. 2 is the agent structure principle schematic of lens combination of the present invention.
Fig. 3 is the agent structure principle schematic of filter wheel of the present invention.
Fig. 4 is the principle schematic that the present invention carries out wavelength positioning and wavelength selection.
Specific implementation mode：
The present invention is described further by way of example and in conjunction with the accompanying drawings.
Embodiment 1：
The agent structure for the light source output Wavelength tuning device that the present embodiment is related to includes pedestal 1, No.1 holder No. 2, two numbers
5, No. five holders 6 of the holder of holder 4, four of holder 3, three, light source 8, the polarizer 9, lens combination 10, motor 11, filter wheel 12,
Through-hole 13, optical filter 14, transparent window 15, optical fiber collimator 16 and optical patchcord 17；The upper table of the pedestal 1 of rectangular plate-like structure
4, No. four holders 5 of the holder of holder 3, three of No.1 holder 2, two and No. five holders 6, pedestal are disposed on face from left to right
1 connect with 4, No. four holders 5 of the holder of holder 3, three of No.1 holder 2, two and No. five 6 bolt types of holder respectively, No.1 holder 2
Top light source 8 is installed, the top of No. two holders 3 is equipped with the polarizer 9, and the top of No. three holders 4 is equipped with lens combination
10, the agent structure of lens combination 10 includes heavy caliber collimation lens 101, condenser lens 102 and small-bore collimation lens 103,
Heavy caliber collimation lens 101, condenser lens 102 and small-bore collimation lens 103 array from left to right, and heavy caliber collimation is saturating
The center of mirror 101, condenser lens 102 and small-bore collimation lens 103 is located on the same line, the top peace of No. four holders 5
Equipped with motor 11, motor 11 is connect with the filter wheel 12 of circular configuration, and 2-n is equidistantly offered on the circumference of filter wheel 12, and (n is
More than 2 integer) through-hole 13 of a circular configuration, the wavelength that circular sheet-like structures are equipped in wherein n-1 through-hole 13 is different
Optical filter 14, the transparent window 15 of circular configuration is installed, the top of No. five holders 6 is equipped with light in remaining 1 through-hole 13
The outlet of fine collimator 16, optical fiber collimator 16 is connect with optical patchcord 17；Lens combination 10, one of optical filter 14 and light
The center of fine collimator 16 is in same horizontal optical path.
Pedestal 1,4, No. four holders 5 of the holder of holder 3, three of No.1 holder 2, two and No. five holders that the present embodiment is related to
6 material is stainless steel；Light source 8 be include deuterium lamp, halogen tungsten lamp, xenon lamp, light emitting diode (LED), super-radiation light source, half
Conductor image intensifer, fiber amplifier, the non-single-mode optics (sunlight) from space and composite light source (emission wavelength from it is ultraviolet,
It can be seen that infrared) wide spectrum light source；The polarizer 9 can obtain polarised light from natural light；Heavy caliber in lens combination 10 is accurate
Straight lens 101 are the collimation lens that clear aperture is 0.1 millimeter to 7 centimetres, and condenser lens 102 is transmission-type lens, small-bore
Collimation lens 103 is the collimation lens that clear aperture is 0.01 millimeter to 2 centimetres；Motor 11 be decelerating motor, servo motor or
DC stepping motor, the rotation of motor 11 can drive the rotation of filter wheel 12 to select light path lens combination 10- fiber optic collimators
The optical filter 14 of different wave length in device 16；The quantity of through-hole 13 on filter wheel 12 is according to the optical filter 14 of required different wave length
Quantity choose, the quantity of through-hole 13 than optical filter 14 quantity more than 1；Optical filter 14 is bandpass-type optical filter；Transparent window
15 as the testing light source 200 for sending out other band wavelengths pass through window；Optical fiber collimator 16 can will be extraneous parallel (approximate
It is parallel) it is optically coupled in single mode optical fiber；Optical patchcord 17 is single mode optical fiber.
The light source output Wavelength tuning device that the present embodiment is related to is in use, by 13 number consecutively of through-hole on filter wheel 12
For 0,1,2,3 ... N, and it is placed in the through-hole 13 that number is 1,2,3 ... N the optical filter 14 of different wave length successively, filters
14 corresponding wavelength of piece is respectively λ1, λ2……λN, the through-hole 13 without being placed in optical filter 14 that number is 0 is transparent window 15,
Testing light source 200 is installed in the left side of transparent window 15, photodetector 300, test light are installed on the right side of transparent window 15
The wavelength in source 200 is λ 0, and the light path of testing light source 200 and photodetector 300 is located on same axis, testing light source 200
Including laser, light emitting diode, lamp and natural light, wavelength X0A wave being included in 200 spectral band of testing light source
Long, photodetector 300 being capable of a length of λ of probing wave0Light；Opening motor 11 makes it that filter wheel 12 be driven to rotate, and waits for lens group
The center of the optical filter 14 and optical fiber collimator 16 in 10, No. 1 through-holes 13 is closed when in same horizontal optical path, opens light source 8,
The natural light that light source 8 is sent out, the polarizer 9 obtain the polarised light in natural light, quilt when polarised light passes through heavy caliber collimation lens 101
Heavy caliber collimation lens 101 is coupled as directional light, and directional light is focused lens 102 when passing through condenser lens 102 and is focused to small light
The light of field range, small light is coupled as when the light of small light field range passes through small-bore collimation lens 103 by small-bore collimation lens 103
The directional light of the directional light of field range, small light field range is broadband light wave, and broadband light wave is by the optical filter 14 in No. 1 through-hole 13
Become narrowband light wave later, narrowband light wave is received and be coupled into optical patchcord 17 by optical fiber collimator 16, optical patchcord 17
Export the wavelength X for the narrowband light wave that optical filter 14 transmits from No. 1 through-hole 131；Period, when photodetector 300 detects survey
When the optical signal that examination light source 200 is sent out, illustrate the optical filter 14 in No. 1 through-hole 13 in light path lens combination 10- optical fiber collimators
On 16 optical axis, what optical patchcord 17 exported is that wavelength is λ1Optical signal, 12 uniform rotation one of filter wheel circle time be T,
Filter wheel 12 has N number of through-hole 13, and it is the corresponding light letter of wavelength X that optical patchcord 17 exports optical signal a P, P every the time of T/N
Number, the optical signal that photodetector 300 detects is P0, P0For wavelength X0Corresponding optical signal, then wavelength X, optical signal P and P0
Shown in correspondence following table with time T：
, it can be seen that wavelength X can be accurately positioned in testing light source 200 and photodetector 300 from upper table, also
Other wavelength can be accurately positioned, by control time T, the position of 12 upper filter 14 of filter wheel can be controlled, with spirit
The output wavelength living for adjusting light source 8.
Claims (3)
1. a kind of light source output Wavelength tuning device, it is characterised in that agent structure include pedestal, No.1 holder, No. two holders,
It is No. three holders, No. four holders, No. five holders, light source, the polarizer, lens combination, motor, filter wheel, through-hole, optical filter, transparent
Window, optical fiber collimator and optical patchcord；It is disposed with No.1 from left to right on the upper surface of the pedestal of rectangular plate-like structure
Holder, No. two holders, No. three holders, No. four holders and No. five holders, pedestal respectively with No.1 holder, No. two holders, No. three branch
Frame, No. four holders and No. five support bracket bolt formula connections, the top of No.1 holder are equipped with light source, and the top of No. two holders is equipped with
The top of the polarizer, No. three holders is equipped with lens combination, and the agent structure of lens combination includes heavy caliber collimation lens, focuses
Lens and small-bore collimation lens, heavy caliber collimating lens, focusing lens and small-bore collimation lens array from left to right,
The center of heavy caliber collimating lens, focusing lens and small-bore collimation lens is located on the same line, the top of No. four holders
Motor is installed, the filter wheel of motor and circular configuration connects, and n-2 circular configuration is equidistantly offered on the circumference of filter wheel
Through-hole, the different optical filter of the wavelength of circular sheet-like structures is installed in wherein n-1 through-hole, is installed in remaining 1 through-hole
There are the transparent window of circular configuration, the top of No. five holders that optical fiber collimator is installed, outlet and the optical fiber of optical fiber collimator are jumped
Line connects；The center of lens combination, one of optical filter and optical fiber collimator is in same horizontal optical path.
2. light source output Wavelength tuning device according to claim 1, it is characterised in that the pedestal, No.1 holder, two
Number holder, No. three holders, No. four holders and No. five holders material be stainless steel；Light source be include deuterium lamp, halogen tungsten lamp, xenon
Lamp, light emitting diode, super-radiation light source, semiconductor optical amplifier, fiber amplifier, non-single-mode optics from space and compound
The wide spectrum light source of light source；The polarizer can obtain polarised light from natural light；Heavy caliber collimation lens in lens combination is logical
The collimation lens that optical port diameter is 0.1 millimeter to 7 centimetres, condenser lens are transmission-type lens, and small-bore collimation lens is light admission port
The collimation lens that diameter is 0.01 millimeter to 2 centimetres；Motor is decelerating motor, servo motor or DC stepping motor, and motor turns
It is dynamic, the rotation of filter wheel can be driven to select the optical filter of the different wave length in light path lens combination-optical fiber collimator；It filters
The quantity of through-hole on wheel is chosen according to the quantity of the optical filter of required different wave length, and the quantity of through-hole is more than the quantity of optical filter
1；Optical filter is bandpass-type optical filter；Transparent window passes through window as the testing light source for sending out other band wavelengths；Light
Fine collimator parallel can be optically coupled to extraneous in single mode optical fiber；Optical patchcord is single mode optical fiber.
3. light source output Wavelength tuning device according to claim 1, it is characterised in that in use, by logical on filter wheel
Hole number consecutively is 0,1,2,3 ... N, and is placed in the optical filtering of different wave length successively in the through-hole that number is 1,2,3 ... N
Piece, the corresponding wavelength of optical filter is respectively λ1, λ2……λN, the through-hole without being placed in optical filter that number is 0 is transparent window,
Testing light source is installed in the left side of transparent window, installs photodetector on the right side of transparent window, the wavelength of testing light source is
λ0, the light path of testing light source and photodetector is located on same axis, testing light source include laser, light emitting diode,
Lamp and natural light, wavelength X0A wavelength being included in testing light source spectral band, photodetector can detect wavelength
For λ0Light；Opening motor makes it drive filter wheel rotation, waits for the optical filter and optical fiber collimator in lens combination, No. 1 through-hole
Center when in same horizontal optical path, open light source, the natural light that light source is sent out, the polarizer obtain natural light in polarization
Light, directional light is coupled as when polarised light passes through heavy caliber collimation lens by heavy caliber collimation lens, and directional light passes through condenser lens
When be focused the light that lens focus is small light field range, by small-bore standard when the light of small light field range passes through small-bore collimation lens
Straight Lens Coupling is the directional light of small light field range, and the directional light of small light field range is broadband light wave, and broadband light wave is logical by No. 1
Become narrowband light wave after optical filter in hole, narrowband light wave is received and be coupled into optical patchcord by optical fiber collimator, light
The wavelength X of fine wire jumper output narrowband light wave of filter transmission from No. 1 through-hole1；Period, when photodetector detects test
When the optical signal that light source is sent out, illustrate the optical filter in No. 1 through-hole on the optical axis of light path lens combination-optical fiber collimator, light
What fine wire jumper exported is that wavelength is λ1Optical signal, the time that filter wheel uniform rotation one is enclosed is T, and filter wheel has N number of through-hole, light
It is the corresponding optical signal of wavelength X, the light that photodetector detects that fine wire jumper exports optical signal a P, P every the time of T/N
Signal is P0, P0For wavelength X0Corresponding optical signal, then wavelength X, optical signal P and P0Shown in correspondence following table with time T：
, it can be seen that wavelength X can be accurately positioned in testing light source and photodetector from upper table, moreover it is possible to other waves
Length is accurately positioned, and by control time T, the position of filter wheel upper filter can be controlled, with the defeated of flexible modulation light source
Go out wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN208170303U (en) * | 2018-05-16 | 2018-11-30 | 德州尧鼎光电科技有限公司 | A kind of light source output Wavelength tuning device |
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| CN105033250A (en) * | 2015-07-01 | 2015-11-11 | 西安交通大学 | Coaxial double-beam laser preheating forming slow cooling stress sustained-release device and method |
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