CN205067882U - Femto second laser ware pulse compression module - Google Patents
Femto second laser ware pulse compression module Download PDFInfo
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- CN205067882U CN205067882U CN201520743455.2U CN201520743455U CN205067882U CN 205067882 U CN205067882 U CN 205067882U CN 201520743455 U CN201520743455 U CN 201520743455U CN 205067882 U CN205067882 U CN 205067882U
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Abstract
The utility model relates to a femto second laser ware pulse compression module. Adopt the transmission -type grating right, the reflection subassembly adopts right angle reflecting prism, and the grating is adjustable to the interval, and the pulse compression module includes grating 11 and grating anchor clamps 13, grating anchor clamps 24 and grating anchor clamps 24, right angle transmission prism 6 and prism mounting fixture in proper order. The utility model discloses a transmission -type grating, efficient, the grating interval is adjustable simultaneously to second pulse output that flies of different pulse widths can be obtained, different pulse width demands can be satisfied.
Description
Technical field
The utility model relates to a kind of femto-second laser, is specifically related to a kind of femto-second laser pulse compression module.
Background technology
Pulse compression is the important component part of femto-second laser, it directly decides the pulse width that femto-second laser exports, it is the principle utilizing grating dispersion, compensate the dispersion in laserresonator, reaching the effect of compression pulse, by regulating the interval of two gratings, its chromatic dispersion compensation quantity can have been changed, thus can adjusting pulsewidth ratio of compression, the pulse obtaining distinct pulse widths exports.Simultaneously because light is when by grating, have diffraction loss, thus affect laser output power, can reflective gratings loss ratio transmission-type can be larger.
Existing femto-second laser pulse compression module technology, mostly be reflective contact metal grating, grating spacings is fixed, and efficiency is low; As shown in Figure 1, adopt reflective contact metal grating pair, this kind of technology diffraction loss can be larger, and efficiency is low, and reflection subassembly is plane mirror, has the problem of space chirp.Or by two vertical flat mirror reflects, as shown in Figure 2, although also can solve the problem of space chirp, cause structural design more complicated like this, cost is high.
Utility model content
The purpose of this utility model is the deficiency existed for prior art, provides a kind of femto-second laser pulse compression module, while solution space chirp problem, solves large, the inefficient problem of diffraction loss.
Technical solution of the present utility model is: femto-second laser pulse compression module adopts transmission-type grating pair, and reflection subassembly adopts right angle to launch prism, and grating pair interval is adjustable.
When incident light is by after grating, the different frequency component of pulse, with slightly different angle diffraction, is subject to different time delays separately, and like this, when pulse is by grating pair, rear along catching up with forward position, pulse is compressed.
The pulse compression ratio of grating pair is determined by grating pair interval, is exported by the pulse regulating grating pair interval can obtain different in width, to be applicable to different pulse width demands.
If only by grating once, frequency spectrum spatially also can by dispersion, and a simple solution is that light beam is reflected back grating pair again, choosing at reflection subassembly, if employing flat mirror reflects, still the problem of space chirp is had, can by two vertical flat mirror reflects, or prism is launched at right angle, but can be more complicated in two vertical level crossing structural designs, cost also can be higher, and therefore the present invention adopts reflecting prism, well solves this problem.
The utility model reflection subassembly adopts right angle to launch prism, and prism adopts total reflection principle, and prism right-angle side can not be covered, and hypotenuse is the plane of incidence simultaneously.
According to above technical scheme, the utility model devises the adjustable mounting structure in grating pair interval, devises Novel prism fixing jig structure.
Femto-second laser pulse compression modular structure comprises grating one and grating fixture one, grating fixture two and grating fixture two, right-angle reflecting prism and prism stationary fixture successively; The grating one of transmission-type grating centering is placed on grating fixture one, and grating two is placed on grating fixture two, is provided with grating regulates Wei Tai in the bottom of grating fixture two; Right-angle reflecting prism is placed on prism stationary fixture.
Further, described prism stationary fixture comprises prism fixture, prism fixture briquetting; Described prism clamp base is levelling bench, platform middle upper portion is the prism stationary plane of two vertical stratifications, the space surrounded between the prism stationary plane of levelling bench and two vertical stratifications forms prism slot to make way, and levelling bench both sides are provided with prism fixture mounting hole; Described prism stationary plane is provided with prism fixture briquetting fixed orifice; The right-angle side of described right-angle reflecting prism is close to prism stationary plane, and prism slot to make way exposes prism fully reflecting surface, and the dual-side of right-angle reflecting prism pushed down by described prism fixture briquetting, and screw is by prism fixture briquetting fixed orifice fixed prism fixture briquetting.
Further, described grating fixture one comprises grating frame one, and grating frame one bottom is bar stock, and grating frame one top is provided with installs notch one, and bar stock two ends are provided with mounting hole one; Grating one keeps to the side to put into along grating frame one installs notch one, then gluing is fixed.
Further, described grating fixture two comprises grating frame two, grating frame two bottom is planar support frame, grating frame two is placed in the side of planar support frame near grating frame one, grating frame two top is provided with installs notch two, planar support frame is provided with mounting hole two, and grating regulates Wei Tai to be fixed on mounting hole two; Grating two keeps to the side to put into along grating frame two installs notch two, then gluing is fixed.
The beneficial effects of the utility model are:
(1) the utility model adopts transmission-type grating, and efficiency is high, and grating spacings is adjustable simultaneously, thus the femtosecond pulse that can obtain distinct pulse widths exports, and can meet different pulse width demands.
(2) choosing at reflection subassembly, if adopt flat mirror reflects, still has the problem of space chirp, and therefore this product adopts right-angle reflecting prism, well solves this problem.
(3) right-angle prism adopts total reflection principle, so prism right-angle side can not be covered, hypotenuse is the plane of incidence simultaneously, therefore devises the prism stationary fixture of new structure, well solves this problem.
One-piece construction volume is little, is easily incorporated in femto-second laser.
Accompanying drawing explanation
Fig. 1 reflective contact metal grating light path principle figure
Fig. 2 is the metal grating light path principle figure of two vertical flat mirror reflects.
Fig. 3 is the utility model femto-second laser pulse compression group schematic diagram.
Fig. 4 is the utility model femto-second laser pulse compression group structural drawing.
Fig. 5 is prism stationary fixture left view.
Fig. 6 is prism stationary fixture right view.
Fig. 7 is the structural drawing of grating one and grating fixture one.
Fig. 8 is the structural drawing of grating two and grating fixture two.
Fig. 9 is that grating regulates dimension platform structural drawing.
In figure: 1-grating one; 2-grating two; 3-grating fixture one; 4-grating fixture two; 5-grating regulates Wei Tai; 6-right-angle reflecting prism; 7-prism fixture; 8-prism fixture briquetting; 9-prism stationary plane; 10-prism slot to make way; 11-prism fixture briquetting mounting hole; 12-flute profile prism fixture mounting hole; 13-mounting hole one; 14-grating frame one; 15-installs notch one; 16-mounting hole two; 17-grating frame two; 18-installs notch two; 19-adjusting knob; 20-sliding platform; 21-slide rail.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
A kind of femto-second laser pulse compression module, adopts transmission-type grating pair, and reflection subassembly adopts right angle to launch prism, and grating pair interval is adjustable, and interval range of adjustment is 0 ~ 10mm.
Described pulse compression module comprises grating 1 and grating fixture 1, grating fixture 24 and grating fixture 24, right angle transmitting prism 6 and prism stationary fixture successively; The grating 1 of described transmission-type grating centering is placed on grating fixture 1, and grating 22 is placed on grating fixture 24, is provided with grating regulates dimension platform 5 in the bottom of grating fixture 24; Described right-angle reflecting prism 6 is placed on prism stationary fixture.
Described prism stationary fixture comprises prism fixture 7, prism fixture briquetting 8; Be levelling bench bottom described prism fixture 7, platform middle upper portion is the prism stationary plane 9 of two vertical stratifications, the space surrounded between the prism stationary plane 9 of levelling bench and two vertical stratifications forms prism slot to make way 10, levelling bench both sides are provided with flute profile prism fixture mounting hole 12, make to finely tune fixture in installation process; Described prism stationary plane 9 is provided with prism fixture briquetting fixed orifice 11.
As shown in Figure 5, the right-angle side of right-angle reflecting prism 6 is close to prism stationary plane 9, and prism slot to make way 10 exposes prism fully reflecting surface, pushing down dual-side and the hypotenuse of right-angle reflecting prism 6 with prism fixture briquetting 8, is screwed prism fixture briquetting 8 after pressing.Flute profile prism fixture mounting hole 12 for finely tuning prism assemblies, allow its can usable range larger.
As shown in Figure 6, right-angle reflecting prism 6 installation figure.
Grating fixture 1 comprises grating frame 1, and grating frame 1 bottom is bar stock, and grating frame 1 top is provided with installs notch 1, and bar stock two ends are provided with mounting hole 1, and grating 1 is fixed on laser housing by mounting hole 1.
Grating fixture 24 comprises grating frame 2 17, grating frame 2 17 bottom is planar support frame, grating frame 2 17 is placed in the side of planar support frame near grating frame 1, grating frame 2 17 top is provided with installs notch 2 18, planar support frame is provided with mounting hole 2 16, and grating regulates dimension platform 5 to be fixed on mounting hole 2 16.
Grating fixture and grating mounting list: as shown in Figure 7, grating 1 keeps to the side to put into along grating frame 1 installs notch 1, then gluing is fixed; As shown in Figure 8, grating 22 keeps to the side to put into along grating frame 2 17 and installs notch 2 18 and be close to front end, then gluing is fixed.For expanding the scope that grating 22 regulates on mounting hole 2 16 loading grating adjustment dimension platform 5, make its adjustable extent larger.
As shown in Figure 9, for grating spacings regulates one-dimensional platform, grating 22 is installed on sliding platform 20 by grating fixture 24, by rotation of adjustment knob 19, makes sliding platform 20 slide anteroposterior on slide rail 21, thus regulates grating spacings.
The utility model adopts penetration grating pair, and loss is little, and efficiency is high, and grating spacings is adjustable, thus the pulse that can obtain distinct pulse widths exports, and can meet the demand of different client.
Claims (5)
1. a femto-second laser pulse compression module, it is characterized in that adopting transmission-type grating pair, reflection subassembly adopts right-angle reflecting prism, and grating pair interval is adjustable, and interval range of adjustment is 0 ~ 10mm.
2. a kind of femto-second laser pulse compression module according to claim 1, is characterized in that described pulse compression module comprises grating one (1) and grating fixture one (3), grating fixture two (4) and grating fixture two (4), right-angle reflecting prism (6) and prism stationary fixture successively; The grating one (1) of described transmission-type grating centering is placed on grating fixture one (3), grating two (2) is placed on grating fixture two (4), is provided with grating regulates Wei Tai (5) in the bottom of grating fixture two (4); Described right-angle reflecting prism (6) is placed on prism stationary fixture.
3. a kind of femto-second laser pulse compression module according to claim 2, is characterized in that described prism stationary fixture comprises prism fixture (7), prism fixture briquetting (8); Described prism fixture (7) bottom is levelling bench, platform middle upper portion is the prism stationary plane (9) of two vertical stratifications, the space surrounded between the prism stationary plane (9) of levelling bench and two vertical stratifications forms prism slot to make way (10), levelling bench both sides are provided with flute profile prism fixture mounting hole (12), make to finely tune fixture in installation process; Described prism stationary plane (9) is provided with prism fixture briquetting fixed orifice (11); The right-angle side of described right-angle reflecting prism (6) is close to prism stationary plane (9), prism slot to make way (10) exposes prism fully reflecting surface, described prism fixture briquetting (8) pushes down dual-side and the hypotenuse of right-angle reflecting prism (6), and screw is by prism fixture briquetting fixed orifice (11) fixed prism fixture briquetting (8).
4. a kind of femto-second laser pulse compression module according to claim 2, it is characterized in that described grating fixture one (3) comprises grating frame one (14), grating frame one (14) bottom is bar stock, grating frame one (14) top is provided with installs notch one (15), bar stock two ends are provided with mounting hole one (13), and grating one (1) is fixed on laser housing by described mounting hole one (13); Grating one (1) keeps to the side to put into along grating frame one (14) installs notch one (15), then gluing is fixed.
5. a kind of femto-second laser pulse compression module according to claim 2, it is characterized in that described grating fixture two (4) comprises grating frame two (17), grating frame two (17) bottom is planar support frame, grating frame two (17) is placed in the side of planar support frame near grating frame one (14), grating frame two (17) top is provided with installs notch two (18), planar support frame is provided with mounting hole two (16), and grating regulates Wei Tai (5) to be fixed on mounting hole two (16); Grating two (2) keeps to the side to put into along grating frame two (17) installs notch two (18), then gluing is fixed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520743455.2U CN205067882U (en) | 2015-09-22 | 2015-09-22 | Femto second laser ware pulse compression module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520743455.2U CN205067882U (en) | 2015-09-22 | 2015-09-22 | Femto second laser ware pulse compression module |
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| CN205067882U true CN205067882U (en) | 2016-03-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186280A (en) * | 2015-09-22 | 2015-12-23 | 湖北捷讯光电有限公司 | Femtosecond laser pulse compression module |
| CN114994938A (en) * | 2022-07-19 | 2022-09-02 | 中国科学院长春光学精密机械与物理研究所 | Dispersion enhanced optical element and spectrum beam combining, locking and measuring structure |
-
2015
- 2015-09-22 CN CN201520743455.2U patent/CN205067882U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186280A (en) * | 2015-09-22 | 2015-12-23 | 湖北捷讯光电有限公司 | Femtosecond laser pulse compression module |
| CN114994938A (en) * | 2022-07-19 | 2022-09-02 | 中国科学院长春光学精密机械与物理研究所 | Dispersion enhanced optical element and spectrum beam combining, locking and measuring structure |
| CN114994938B (en) * | 2022-07-19 | 2022-10-25 | 中国科学院长春光学精密机械与物理研究所 | Dispersion enhanced optical element and spectrum beam combining, locking and measuring structure |
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