CN209313192U - A kind of repetition tunable mode-locked laser - Google Patents
A kind of repetition tunable mode-locked laser Download PDFInfo
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- CN209313192U CN209313192U CN201920074596.8U CN201920074596U CN209313192U CN 209313192 U CN209313192 U CN 209313192U CN 201920074596 U CN201920074596 U CN 201920074596U CN 209313192 U CN209313192 U CN 209313192U
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Abstract
The utility model discloses a kind of repetition tunable mode-locked lasers, including along the sequentially connected pumping source of optical path, coupling assembly, dichroic mirror, the first hysteroscope, operation material, the first reflecting mirror, the long adjusting component of chamber, the second reflecting mirror and the second hysteroscope, it includes V-shaped 3 points of arrangements and the first adjusting mirror, the second adjusting mirror and the third adjusting mirror that successively reflect optical path that the chamber length, which adjusts component, it is the identical plano-concave total reflective mirror of radius of curvature that first adjusting mirror, the second adjusting mirror and third, which adjust mirror, and confocal setting.Chamber is long to adjust component to the utility model by being inserted into the Mode-locked laser resonator of laser, and it is long easily to change chamber, realizes that repetition is tunable, and do not change the output mode of oscillating laser；Structure is simple, reduces the complexity of system, and simple production process significantly improves stability, greatlys save cost.
Description
Technical field
The utility model relates to field of laser device technology, and in particular to a kind of repetition tunable mode-locked laser.
Background technique
Ultrashort pulse has the pulse width of femtosecond, picosecond magnitude, has high pulse repetition frequency, wide spectrum and high
Pulse peak power.Ultrafast laser is an important component in industrial processes, the non-hot material of high quality
Working ability, along with laser technology, process exploitation, Beam Control and in terms of progress, greatly accelerate ultrafast
The application range of laser, in physics, biology, OTC, laser spectroscopy, optic communication, Laser focus and non-linear frequency
Transformation field has a wide range of applications.
Repetition tunable mode-locked laser is an inevitable direction of ultrafast laser development, it is required that longer chamber it is long with
More mode lockings are obtained, narrower pulsewidth is obtained.Many people attempt to realize the tunable repetition of repetition with different methods
Tunable mode-locked laser, wherein some realizes that repetition is adjustable using two prisms, repetition is changeable, but chamber length is adjustable
The limited length of section, while dispersion has also been introduced.It is round-trip between two prisms to change light beam using two right-angle prisms for some
Number realizes that repetition is adjustable, introduces dispersion in this way, needs to compensate dispersion, and round-trip number difference is bigger, hot spot exports mould
Formula difference is bigger, and round-trip number is more, and adjusting is more difficult, and intracavitary total losses will be bigger.Also some is selected vertical using etalon
The effect of mould, the frequency of change repetition tunable mode-locked laser, but the variation of etalon angle, laser facula can be brought horizontal
To displacement, lead to the variation of laser output oscillation mode, influences the stability for exporting laser.
Utility model content
The purpose of the utility model is to provide a kind of structure is simple, the complexity of system can be reduced simultaneously and improves stabilization
The repetition tunable mode-locked laser of property.
The utility model in order to achieve the above objectives, is achieved especially by following technical scheme:
A kind of repetition tunable mode-locked laser, including along the sequentially connected pumping source of optical path, coupling assembly, dichroic mirror,
First hysteroscope, operation material, the first reflecting mirror, chamber are long to adjust component, the second reflecting mirror and the second hysteroscope, the long adjusting group of chamber
Part includes that the first adjusting mirror, the second adjusting mirror and the third of V-shaped 3 points of arrangements adjust mirror, and the first adjusting mirror, second adjust mirror
Adjusting mirror with third is the identical plano-concave total reflective mirror of radius of curvature, and confocal setting.Wherein the first hysteroscope, operation material,
Long component, the second reflecting mirror and the second hysteroscope of adjusting of one reflecting mirror, chamber forms Mode-locked laser resonator.
Further, coupling assembly includes two lens being set side by side, and two lens are coated with pump light anti-reflection film.
Further, two light pass surfaces of dichroic mirror are coated with pump light anti-reflection film, also close to one side end face of operation material
It is coated with oscillating laser high-reflecting film.
Further, two light passing end faces of the first hysteroscope are coated with pump light anti-reflection film, and outgoing side end face is also coated with vibration
Swing laser part reflectance coating.
Further, operation material Nd:YVO4, Nd:GdVO4, Nd:YAG, Nd:YLF, Yb:YAG, Yb:YAB, Yb:
One of KGW, Yb:KYW and laser fiber.
Further, the second hysteroscope is SESAM saturable absorbing mirror.
Further, the second hysteroscope is the non-linear mode-locking device containing nonlinear crystal.
Compared with prior art, the utility model adjusts component by being inserted into chamber length in the Mode-locked laser resonator of laser,
It is long that chamber can easily be changed, realize that repetition is tunable, and do not change the output mode of oscillating laser；Guaranteeing laser volume not
Become, under the premise of not increasing optical element, realizes that chamber is long and increase, laser output frequency changes.Guarantee that laser exports simultaneously
Mode is constant, and loss does not increase, enhancing laser compatibility and stability；Structure is simple, reduces the complexity of system, produces work
Skill is simplified, and significantly improves stability, greatlys save cost.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the index path of an embodiment of the present invention.
In figure, 1, pumping source；2, coupling assembly；3, dichroic mirror；4, the first hysteroscope；5, operation material；6, the first reflecting mirror；
7, chamber is long adjusts component；71, first mirror is adjusted；72, second mirror is adjusted；73, third adjusts mirror；8, the second reflecting mirror；9, second
Hysteroscope.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
As shown in Figure 1, a kind of repetition tunable mode-locked laser of the utility model, including along the sequentially connected pump of optical path
Pu source 1, coupling assembly 2, dichroic mirror 3, the first hysteroscope 4, operation material 5, the first reflecting mirror 6, the long adjusting component 7, second of chamber are anti-
Mirror 8 and the second hysteroscope 9 are penetrated, the long component 7 that adjusts of chamber includes that V-shaped 3 points the first adjusting mirrors 71, second arranged adjust 72 and of mirror
Third adjusts mirror 73, and it is that the identical plano-concave of radius of curvature is all-trans that the first adjusting mirror 71, second, which adjusts mirror 72 and third and adjusts mirror 73,
Mirror, and confocal setting.First, which adjusts mirror 71, second, adjusts mirror 72 and third and adjusts mirror 73 and form confocal cavity system, not only can be with
It realizes that chamber length is tunable, and reduces light beam diffraction loss total in long range communication process.
In one embodiment, as shown in Fig. 2, first adjusts the curvature that mirror 71, second adjusts mirror 72 and third adjusts mirror 73
Radius is Rc, and the long points adjusted in component on the second adjusting mirror 72 of chamber are 3.Incident beam is incident on the long adjusting component of chamber
First adjust mirror 71 after, around focus rotate first adjust mirror 71, change its normal position, according to reflection law, angle of reflection etc.
In incidence angle, the position S1 that reflected light pass can be made to adjust mirror 72 to second；The second adjusting mirror 72 is further rotated, so that instead
Penetrate the center that optical transport adjusts mirror 73 to third；It rotates third and adjusts mirror 73, so that reflected light pass adjusts mirror 72 to second
The position S2；Light reflexes to the first adjusting mirror 71 by the second adjusting mirror 72, and then reflexes to the position S3 of the second adjusting mirror 72；
The reflection that further light beam adjusts mirror 72 by second is transmitted to third and adjusts mirror 73；Finally the anti-of mirror 73 is adjusted by third
It penetrates, finally adjusts the outgoing of component output end from chamber is long.
The long component 7 that adjusts of chamber can adjust mirror 73 by the first adjusting mirror 71 of optimization simultaneously and third, realize that second is adjusted
Luminous point increases on mirror 72, to achieve the purpose that change chamber long, realizes that repetition is tunable.Luminous point is each on second adjusting mirror 72
Incrementss are 2, and the corresponding long incrementss of chamber are 4Rc, adjust component 7 if it is desired that chamber is long to increase more chambers long, need by
It is close that incident light more adjusts mirror 73 to third；Equidistantly distributed is presented in second distribution for adjusting the luminous point on mirror 72.
Chamber is long to adjust the long variable quantity of component maximum cavity allowed, except by the first adjusting mirror 71 and third adjusting mirror 73
Limitation except, also by second adjusting mirror 72 limited, can by change second adjust mirror 72 parameter size increase most
Big change of cavity length amount.
Wherein the first hysteroscope 4, operation material 5, the first reflecting mirror 6, chamber are long adjusts component 7, the second reflecting mirror 8 and the second chamber
Mirror 9 forms Mode-locked laser resonator.First reflecting mirror 6 and the second reflecting mirror 8 form telescopic system, can easily adjust resonant cavity not
With the spot size of position, mode locking is realized, and inhibit to damage.
Pumping source 1 is flash lamp pumping source, laser diode or other laser beams.
Preferably, coupling assembly 2 includes two lens being set side by side, and two lens are coated with pump light anti-reflection film.Pumping
Light anti-reflection film is to the high saturating transmission film of pump light, and pump light is transmitted to dichroic mirror 3 by the Lens Coupling system.
Preferably, two light pass surfaces of dichroic mirror 3 are coated with pump light anti-reflection film, also close to 5 one side end face of operation material
It is coated with oscillating laser high-reflecting film.Pump light anti-reflection film is to the high saturating transmission film of pump light, and oscillating laser high-reflecting film is to laser
The anti-film layer of the height of oscillation wavelength, the pump light that pumping source 1 exports are transmitted to the lens of coupling assembly 2 by optical fiber, further
It is transmitted to the dichroic mirror 3 and is coupled into intra resonant cavity.
Preferably, two light passing end faces of the first hysteroscope 4 are coated with pump light anti-reflection film, and outgoing side end face is also coated with oscillation
Laser part reflectance coating.Pump light anti-reflection film is the anti-reflection film to pump wavelength, and outgoing side end face is towards in resonant cavity
Side, oscillating laser part reflectance coating are to the part reflectance coating of oscillation light, and the first hysteroscope 4 after the reflection of resonant cavity as exporting
The laser of hysteroscope, output is exported by the dichroic mirror 3 of front.
Preferably, operation material 5 includes but is not limited to Nd:YVO4, Nd:GdVO4, Nd:YAG, Nd:YLF, Yb:YAG, Yb:
YAB, Yb:KGW, Yb:KYW or laser fiber.
Preferably, the second hysteroscope 9 is passive mode-locking device, can be SESAM saturable absorbing mirror；Or, for containing KTP, LBO,
The non-linear mode-locking device of the nonlinear crystals such as BBO or BIBO.
In a specific embodiment, pumping source 1 is transmitted to coupling assembly by optical fiber using the 808nm laser diode of 30W
2, it is further transmitted to dichroic mirror 3, is coupled into intra resonant cavity.Mode-locked laser resonator is determined by the first hysteroscope 4 and the second hysteroscope 9
Fixed, wherein the second hysteroscope 9 is saturable absorbing mirror, in addition to this, resonant cavity also includes working-laser material 5, the first reflecting mirror
6, the second chamber is long adjusts component 7, the second reflecting mirror 8.The wherein two-sided anti-reflection film being coated with to 808nm wavelength of the first hysteroscope 4, court
The part reflectance coating to 1064nm is coated on the inside of to resonant cavity, the laser of output is exported by the dichroic mirror 3 of front.Operation material
5 are selected as a-cut Nd:YVO4.First reflecting mirror 6 and the second reflecting mirror 8 form telescopic system, can easily adjust resonant cavity
The spot size of different location realizes mode locking, and inhibits to damage.Second hysteroscope 10 is SESAM saturable absorption eyeglass.This is heavy
Frequently the output pulse width range of tunable mode-locked laser is 10~20ps, and chamber is long to be adjusted in component on the second adjusting mirror 72
When points are 5,7,9, the output center repetition of the mode-locked laser of corresponding embodiment is 32MHz, 25MHz, 21MHz.
The specific embodiment of the utility model is only the explanation to the utility model, is not to the utility model
Limitation, those skilled in the art can according to need after reading this specification makes without creative tribute the present embodiment
The modification offered, but as long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (7)
1. a kind of repetition tunable mode-locked laser, which is characterized in that including along the sequentially connected pumping source of optical path (1), coupling
Component (2), dichroic mirror (3), the first hysteroscope (4), operation material (5), the first reflecting mirror (6), chamber are long to adjust component (7), second
Reflecting mirror (8) and the second hysteroscope (9), the chamber is long adjust component include V-shaped 3 points of arrangements and optical path is successively reflected the
One, which adjusts mirror (71), the second adjusting mirror (72) and third, adjusts mirror (73), and first, which adjusts mirror, the second adjusting mirror and third, adjusts mirror
For the identical plano-concave total reflective mirror of radius of curvature, and confocal setting.
2. repetition tunable mode-locked laser according to claim 1, which is characterized in that coupling assembly is set side by side including two
The lens set, two lens are coated with pump light anti-reflection film.
3. repetition tunable mode-locked laser according to claim 1, which is characterized in that two light pass surfaces of dichroic mirror are plated
There is pump light anti-reflection film, is also coated with oscillating laser high-reflecting film close to (5) one side end face of operation material.
4. repetition tunable mode-locked laser according to claim 1, which is characterized in that two light passing end faces of the first hysteroscope
It is coated with pump light anti-reflection film, outgoing side end face is also coated with oscillating laser part reflectance coating.
5. repetition tunable mode-locked laser according to claim 1, which is characterized in that operation material Nd:YVO4,
One of Nd:GdVO4, Nd:YAG, Nd:YLF, Yb:YAG, Yb:YAB, Yb:KGW, Yb:KYW and laser fiber.
6. repetition tunable mode-locked laser according to claim 1, which is characterized in that the second hysteroscope is that SESAM can satisfy
And absorbing mirror.
7. repetition tunable mode-locked laser according to claim 1, which is characterized in that the second hysteroscope is containing non-linear crystalline substance
The non-linear mode-locking device of body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920074596.8U CN209313192U (en) | 2019-01-16 | 2019-01-16 | A kind of repetition tunable mode-locked laser |
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| CN201920074596.8U CN209313192U (en) | 2019-01-16 | 2019-01-16 | A kind of repetition tunable mode-locked laser |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111509553A (en) * | 2020-04-27 | 2020-08-07 | 安徽工业大学 | Ytterbium-doped rare earth tantalate femtosecond laser crystal and preparation method thereof |
| CN111987576A (en) * | 2020-07-22 | 2020-11-24 | 山东师范大学 | Adjustable repetition frequency femtosecond solid-state laser and adjusting method |
| CN112271531A (en) * | 2020-10-12 | 2021-01-26 | 北京卓镭激光技术有限公司 | Laser, mode locking state detection method and device |
| CN117130006A (en) * | 2023-08-24 | 2023-11-28 | 光维(广东)科技有限公司 | Automatic aliasing elimination double-optical comb ranging device and method |
-
2019
- 2019-01-16 CN CN201920074596.8U patent/CN209313192U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111509553A (en) * | 2020-04-27 | 2020-08-07 | 安徽工业大学 | Ytterbium-doped rare earth tantalate femtosecond laser crystal and preparation method thereof |
| CN111509553B (en) * | 2020-04-27 | 2021-08-06 | 安徽工业大学 | Ytterbium-doped rare earth tantalate femtosecond laser crystal and preparation method thereof |
| CN111987576A (en) * | 2020-07-22 | 2020-11-24 | 山东师范大学 | Adjustable repetition frequency femtosecond solid-state laser and adjusting method |
| CN112271531A (en) * | 2020-10-12 | 2021-01-26 | 北京卓镭激光技术有限公司 | Laser, mode locking state detection method and device |
| CN117130006A (en) * | 2023-08-24 | 2023-11-28 | 光维(广东)科技有限公司 | Automatic aliasing elimination double-optical comb ranging device and method |
| CN117130006B (en) * | 2023-08-24 | 2024-05-03 | 光维(广东)科技有限公司 | Automatic aliasing elimination double-optical comb ranging device and method |
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