CN203631971U - Pulse laser module employing optical fiber coupling pump light input and output - Google Patents
Pulse laser module employing optical fiber coupling pump light input and output Download PDFInfo
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- CN203631971U CN203631971U CN201320791157.1U CN201320791157U CN203631971U CN 203631971 U CN203631971 U CN 203631971U CN 201320791157 U CN201320791157 U CN 201320791157U CN 203631971 U CN203631971 U CN 203631971U
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- pulsed laser
- optical fiber
- laser module
- saturable absorber
- composite crystal
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Abstract
The utility model discloses a pulse laser module employing optical fiber coupling pump light input and output. The pulse laser module mainly comprises a tail fiber connecting a pumping source and outputting to an amplification system, self-focusing lenses, a gain medium, and a saturable absorber composite crystal. The pulse laser module employs the optical fiber coupling pump light input and optical fiber coupling output pulse laser. The self-focusing lenses are used as an optical coupling element for the spatial light and the optical fiber. The gain medium and the saturable absorber composite crystal are combined with a TEC temperature control matter to enable the size of an oscillating source to be minimized substantially. The pulse laser module of the utility model is an optical fiber coupling miniature integrated nanosecond pulse laser module which is compact in structure, stable in performance, and controllable in pulse width and repetition rate, which is simple and practical, and which is easy to replace and is not prone to damage.
Description
Technical field
The utility model relates to laser technology field, is specially and makes the micro integrated ps pulsed laser and ns pulsed laser module of a kind of coupling fiber.
Background technology
Nanosecond pulse optical fiber laser is widely used in field of laser processing, as aspects such as laser markings.The method that produces at present nanosecond laser pulses in optical fiber mainly contains two kinds: the one, and adopt coupling fiber acousto-optic modulator to add fiber laser to obtain nanosecond pulse, and coupling fiber acousto-optic modulator structure and complex manufacturing technology, cost is higher; The 2nd, amplify wavelength by fiber amplifier and obtain high power pulsed laser at the ps pulsed laser and ns pulsed laser seed source of 1 micron of left and right, this seed source is produced by semiconductor laser diode conventionally.Wavelength is in the pulse semiconductor laser diode fabrication complex process of 1 micron of left and right, and cost is very high, and is in use very easily subject to the irradiation of feedback light and damages.The technology of preparing that the most important thing is the pulse semiconductor laser diode of 1 micron waveband rests in overseas enterprise's hand at present, and our country all need to be from external import, thereby makes the development of China's high power pulse optical fiber laser be limited by foreign technology.
And the technical scheme of several existing generation nanosecond laser pulses, if application number is 200810089810876.X, the Chinese patent application of " Q switching microlaser equipment and using method " by name, application number is 201220220851.3, the Chinese utility model patent application of " based on the passive Q-regulaitng laser of bonding crystal " by name, its input and output pump mode is still free space transmission, have no idea with current development rapidly fiber laser mate.In addition, existingly relate to the application of fiber coupling technique in laser, as application number 201010114196.9, the Chinese patent application of " a kind of full optical fiber laser synthesizer and preparation method thereof " by name, it is only a kind of be coupled implementation of input and output of optical fiber that uses, the element that not can produce laser pulse, does not comprise gain media and Q-switching device.For another example application number 201010106703.6, the Chinese patent application of " seed resource module of optical fiber amplifier " by name, thereby be to adopt electro-optical modulation device to modulate and obtain nanosecond pulse continuous semiconductor laser, owing to adopting electro-optical modulation device complex structure, volume is larger, in addition owing to being that noise spectra of semiconductor lasers is modulated, so optical maser wavelength is restricted.So these and this patent relate in have bigger difference.
In sum, in prior art, be badly in need of a kind of compact conformation, practical, be easy to change, the micro integrated ps pulsed laser and ns pulsed laser module of lower, the stable performance of cost, pulse duration and the controlled coupling fiber of repetition rate.
Summary of the invention
The purpose of this utility model is to provide a kind of compact conformation, practical, not fragile, the micro integrated ps pulsed laser and ns pulsed laser module that is easy to the controlled coupling fiber of replacing, stable performance, pulse duration and repetition rate.In order to achieve the above object, the utility model is achieved through the following technical solutions:
A micro integrated ps pulsed laser and ns pulsed laser module for coupling fiber, mainly comprises tail optical fiber, GRIN Lens and the gain media and the saturable absorber composite crystal that connect pumping source and output to amplification system;
Described tail optical fiber comprises input and output, is connected to two GRIN Lens one sides;
The both ends of the surface of described GRIN Lens are coated with the high antireflection film at pump light wavelength, be placed on the plane of incidence one side of described gain media and saturable absorber composite crystal, utilize the light that described tail optical fiber sends pumping source to converge in described gain media and saturated absorbing body composite crystal through GRIN Lens;
The incident end face of described gain media and saturable absorber composite crystal is coated with at the high transmittance film of pump light wavelength with at the high-reflecting film of oscillation light wavelength, other end is coated with the high transmittance film at oscillation light wavelength, film reflection and the part transmission of after the light that described gain media saturable absorber composite crystal sends, being plated by its both ends of the surface, form laser generation, the described both ends of the surface of process are coated with in the GRIN Lens of the high transmittance film of oscillation light wavelength and are coupled into tail optical fiber output.
Foregoing micro integrated ps pulsed laser and ns pulsed laser module, preferred scheme is, outside the input of described tail optical fiber and output, is provided with the optical fiber connector.
Foregoing micro integrated ps pulsed laser and ns pulsed laser module, preferably scheme is, described pumping source is semiconductor laser diode (be more preferably, described semiconductor laser diode imports pump light with optical fiber).
Foregoing micro integrated ps pulsed laser and ns pulsed laser module, preferably scheme is, described GRIN Lens is of a size of 3mm × 9mm.
Foregoing micro integrated ps pulsed laser and ns pulsed laser module, preferably scheme is, described gain media and saturable absorber composite crystal are Nd:YAG+Cr
4+: YAG, it is of a size of, and 3mm × 9mm(is more preferably, and Nd:YAG is of a size of 3mm × 6mm, Cr
4+: YAG is of a size of 3mm × 3mm, Cr
4+: YAG transmitance is 65%).
Foregoing micro integrated ps pulsed laser and ns pulsed laser module, preferably scheme is, described gain media and saturable absorber composite crystal output end face are coated with the high transmittance film (be more preferably, transmitance is 10%～15%) to the transmission of 1064nm part.
Foregoing micro integrated ps pulsed laser and ns pulsed laser module, preferably scheme is, described gain media and saturable absorber composite crystal are bonding with the TEC temperature control device that is connected with temperature control module.
Foregoing micro integrated ps pulsed laser and ns pulsed laser module, preferred scheme is, and the temperature control material of TEC temperature control device is TEC, and it is of a size of, and 5mm × 5mm × 9mm(is more preferably, control temperature range is 30-33 DEG C).
The micro integrated ps pulsed laser and ns pulsed laser module of a kind of coupling fiber that the utility model provides, mainly comprise input and output tail optical fiber, GRIN Lens, laser crystal, saturable absorber, resonant cavity, a kind of micro integrated ps pulsed laser and ns pulsed laser module of coupling fiber, mainly comprise the input tail optical fiber that connects pumping source, GRIN Lens, the gain media of the direct plated film of both ends of the surface and saturable absorber composite crystal, GRIN Lens, output tail optical fiber and the optical fiber connector of pulse laser coupling output, described input tail optical fiber is placed on a side of described GRIN Lens, the both ends of the surface of described GRIN Lens are coated with the high antireflection film at pump light wavelength, the plane of incidence one side that is placed on described gain media saturable absorber temperature control material composite crystal, converges to the pump light of being inputted by input tail optical fiber in the composite crystal of described gain media and saturable absorber, the incident end face of the composite crystal of described gain media and saturable absorber is coated with at the high transmittance film of pump light wavelength with at the high-reflecting film of oscillation light wavelength, and other end is coated with in the part of oscillation light wavelength and sees through film, the described optical fiber connector comprise the tail optical fiber place of input end face and the tail optical fiber place of output end face, and the described optical fiber connector are mainly connection and the replacings that facilitates this module, the light that the composite crystal of described gain media and saturable absorber sends is after adjusting Q via self saturated absorbing body, through reflection and the part transmission of its both ends of the surface institute plated film, form laser generation, the described both ends of the surface of process are coated with in the GRIN Lens of the high transmittance film of oscillation light wavelength and are coupled into tail optical fiber output.
The micro integrated ps pulsed laser and ns pulsed laser module composite crystal used of a kind of coupling fiber of the utility model is gain media and saturable absorber composite crystal and two ends plated film, be combined with temperature control device TEC in bottom surface, thereby and make by the control of TEC input current being controlled to the temperature of composite crystal that output pulse waveform is stable, pulse duration and repetition rate controlled.And can greatly reduce the volume of module in this mode of the direct plated film of composite crystal both ends of the surface, and composite crystal rear and front end face institute plated film played protective effect well to pump laser diode, can effectively prevent that feedback light from crossing strong damage element.Outside input-output optical fiber, be also designed with the optical fiber connector, facilitate the connection of pumping source, amplification system and this module.
Compared with prior art, the utility model adopts the input of coupling fiber pump light and coupling fiber output pulse laser, GRIN Lens is as the optical coupling element of spatial light and optical fiber, gain media and saturable absorber composite crystal are combined oscillation source volume are dwindled greatly with TEC temperature control material, have designed a kind of compact conformation, simple and practical, not fragile, be easy to change stable performance, the micro integrated ps pulsed laser and ns pulsed laser module of coupling fiber that pulse duration and repetition rate are controlled.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model.Wherein 1: tail optical fiber, 2: GRIN Lens, 3: composite crystal (the Nd:YAG & Cr of plated film
4+: YAG), 4:TEC temperature control device, 5:1064nm reflection, pump light transmission film, 6:1064nm part transmission film, 7: temperature control module.
Fig. 2 is under desired temperature adjusting scope, the stable pulse train obtaining.
Embodiment
Describe the technical solution of the utility model in detail below in conjunction with embodiment and accompanying drawing, but protection range is not by this restriction.
embodiment 1a kind of micro integrated ps pulsed laser and ns pulsed laser module of coupling fiber, structure can be with reference to shown in figure 1, mainly comprise and connect pumping source (semiconductor laser diode, pump light is imported with optical fiber) and output to tail optical fiber, GRIN Lens and gain media and the saturable absorber composite crystal of amplification system
Described tail optical fiber comprises input and output, is connected to two GRIN Lens one sides;
The both ends of the surface of described GRIN Lens (being of a size of 3mm × 9mm) are coated with the high antireflection film at pump light wavelength, be placed on the plane of incidence one side of described gain media and saturable absorber composite crystal, utilize the light that described tail optical fiber sends pumping source to converge in described gain media and saturated absorbing body composite crystal through GRIN Lens;
Described gain media and saturable absorber composite crystal (Nd:YAG+Cr
4+: YAG, it is of a size of 3mm × 9mm, and Nd:YAG is of a size of 3mm × 6mm, Cr
4+: YAG is of a size of 3mm × 3mm, Cr
4+: YAG transmitance is 65%) incident end face be coated with at the high transmittance film of pump light wavelength with at the high-reflecting film of oscillation light wavelength, other end is coated with at the high transmittance film of oscillation light wavelength (to the high transmittance film of 1064nm part transmission, transmitance is 10%～15%), film reflection and part transmission that the light that described gain media saturable absorber composite crystal sends is plated by its both ends of the surface, form laser generation, the described both ends of the surface of process are coated with in the GRIN Lens of the high transmittance film of oscillation light wavelength and are coupled into tail optical fiber output.Gain media and saturable absorber composite crystal are bonding with the TEC temperature control device that is connected with temperature control module, and the temperature control material of TEC temperature control device is TEC, and it is of a size of 5mm × 5mm × 9mm, and controlling temperature range is 30～33 DEG C.
embodiment 2a micro integrated ps pulsed laser and ns pulsed laser module for coupling fiber, structure still can, with reference to shown in figure 1, as different from Example 1, be provided with the optical fiber connector outside the input of described tail optical fiber and output.
embodiment 3a kind of micro integrated ps pulsed laser and ns pulsed laser module of coupling fiber, structure still can Fig. 1 shown in, mainly comprise the input optical fibre, GRIN Lens, gain media saturable absorber composite crystal, temperature control device, GRIN Lens, the coupling output optical fibre that connect pumping source.
The both ends of the surface of described GRIN Lens are coated with the high antireflection film at pump light wavelength, be placed on the plane of incidence one side of described gain media saturable absorber temperature control material composite crystal, utilize the light that described tail optical fiber sends pumping source to converge in described gain media class saturated absorbing body temperature control material composite crystal through GRIN Lens; The incident end face of described gain media saturable absorber temperature control material composite crystal is coated with at the high transmittance film of pump light wavelength with at the high-reflecting film of oscillation light wavelength, and other end is coated with the high transmittance film at oscillation light wavelength; The both ends of the surface of described GRIN Lens are coated with the high antireflection film at oscillation light wavelength, and output optical coupling is entered to output optical fibre.
A micro integrated ps pulsed laser and ns pulsed laser module for coupling fiber, its core component is to be with the gain media of temperature control device and the composite crystal of saturable absorber, as shown in Figure 1, described laser cooling is Nd:YAG+Cr to its structure
4+: YAG and be coated with the optical thin film to the transmission of pump light wavelength and the total reflection of 1064nm wavelength at its incident end, output is coated with the transmission of 1064nm part, and transmitance is 10%～15%.Above-mentioned composite crystal and TEC temperature control device are bonding, realize the control to crystal temperature effect, and the control range of temperature is 30 DEG C～33 DEG C.Fig. 2 is under desired temperature adjusting scope, the stable pulse train obtaining.
Finally it should be noted that this execution mode is only in order to implementations of the present utility model to be described but not be confined to this.Replace easily and change of the present utility model, within all should being encompassed in protection of the present utility model.
Of the present invention completing had benefited from following fund assistance: state natural sciences fund (NO.61275147) and Shandong Province " Mount Taishan scholar " construction project specific project expenditure is subsidized.
Claims (9)
1. a micro integrated ps pulsed laser and ns pulsed laser module for coupling fiber, mainly comprises tail optical fiber, GRIN Lens and the gain media and the saturable absorber composite crystal that connect pumping source and output to amplification system, it is characterized in that:
Described tail optical fiber comprises input and output, is connected to two GRIN Lens one sides;
The both ends of the surface of described GRIN Lens are coated with the high antireflection film at pump light wavelength, be placed on the plane of incidence one side of described gain media and saturable absorber composite crystal, utilize the light that described tail optical fiber sends pumping source to converge in described gain media and saturable absorber composite crystal through GRIN Lens;
The incident end face of described gain media and saturable absorber composite crystal is coated with at the high transmittance film of pump light wavelength with at the high-reflecting film of oscillation light wavelength, and other end is coated with the high transmittance film at oscillation light wavelength;
Film reflection and part transmission that the light that described gain media and saturable absorber composite crystal send is plated by its both ends of the surface, form laser generation, and the described both ends of the surface of process are coated with in the GRIN Lens of the high transmittance film of oscillation light wavelength and are coupled into tail optical fiber output.
2. micro integrated ps pulsed laser and ns pulsed laser module according to claim 1, is characterized in that, outside the input of described tail optical fiber and output, is provided with the optical fiber connector.
3. micro integrated ps pulsed laser and ns pulsed laser module according to claim 1, is characterized in that, described pumping source is semiconductor laser diode.
4. micro integrated ps pulsed laser and ns pulsed laser module according to claim 1, is characterized in that, described oscillation light is ps pulsed laser and ns pulsed laser.
5. micro integrated ps pulsed laser and ns pulsed laser module according to claim 1, is characterized in that, described GRIN Lens is of a size of 3mm × 9mm.
6. micro integrated ps pulsed laser and ns pulsed laser module according to claim 1, is characterized in that, described gain media and saturable absorber composite crystal are Nd:YAG+Cr
4+: YAG, it is of a size of 3mm × 9mm.
7. micro integrated ps pulsed laser and ns pulsed laser module according to claim 5, is characterized in that, described gain media and saturable absorber composite crystal output end face are coated with the high transmittance film to the transmission of 1064nm part.
8. according to the arbitrary described micro integrated ps pulsed laser and ns pulsed laser module of claim 5-6, it is characterized in that, described gain media and saturable absorber composite crystal are bonding with the TEC temperature control device that is connected with temperature control module.
9. micro integrated ps pulsed laser and ns pulsed laser module according to claim 7, is characterized in that, the temperature control material of TEC temperature control device is TEC, and it is of a size of 5mm × 5mm × 9mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320791157.1U CN203631971U (en) | 2013-12-05 | 2013-12-05 | Pulse laser module employing optical fiber coupling pump light input and output |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320791157.1U CN203631971U (en) | 2013-12-05 | 2013-12-05 | Pulse laser module employing optical fiber coupling pump light input and output |
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| CN203631971U true CN203631971U (en) | 2014-06-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103618208A (en) * | 2013-12-05 | 2014-03-05 | 聊城大学 | Mini-type integrated nanosecond pulse laser module coupled through optical fiber |
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2013
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103618208A (en) * | 2013-12-05 | 2014-03-05 | 聊城大学 | Mini-type integrated nanosecond pulse laser module coupled through optical fiber |
| CN103618208B (en) * | 2013-12-05 | 2016-08-17 | 聊城大学 | A kind of micro integrated ps pulsed laser and ns pulsed laser module of optical fiber coupling |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20141205 |
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| EXPY | Termination of patent right or utility model |