CN112271539A - Power supply power-on method and device and SESAM picosecond optical fiber laser - Google Patents

Power supply power-on method and device and SESAM picosecond optical fiber laser Download PDF

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Publication number
CN112271539A
CN112271539A CN202011085639.6A CN202011085639A CN112271539A CN 112271539 A CN112271539 A CN 112271539A CN 202011085639 A CN202011085639 A CN 202011085639A CN 112271539 A CN112271539 A CN 112271539A
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current
pump laser
power
mode locking
preset
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马文君
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Beijing Grace Laser Technology Co ltd
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Beijing Grace Laser Technology Co ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/0014—Monitoring arrangements not otherwise provided for
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/0906—Electrical, electrochemical, or electron-beam pumping of a dye laser
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
    • H01S3/1106—Mode locking
    • H01S3/1109—Active mode locking

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)

Abstract

The application relates to a power supply power-on method, a power supply power-on device and an SESAM picosecond optical fiber laser, wherein the method comprises the following steps: powering up the oscillation pump laser by using a preset starting current, and judging whether the oscillation pump laser is successfully locked; if not, adjusting the preset starting current according to the mode locking type of the oscillating pump laser until the mode locking is successful; and completing the power-on of the oscillating pump laser by the adjusted preset startup current. The mode locking that the appearance that can avoid huge pulse phenomenon caused is unstable, and furthest has improved the life of SESAM picosecond fiber laser.

Description

Power supply power-on method and device and SESAM picosecond optical fiber laser
Technical Field
The application relates to the technical field of laser, in particular to a power supply power-on method and device and an SESAM picosecond optical fiber laser.
Background
At present, with the technological progress and the improvement of the quality of life, the high-precision machining and cutting technology becomes a high technology in the industrial field, and the ultrafast laser is an important technical means for realizing high-precision machining. Among various mode locking methods, a semiconductor saturable absorber (SESAM) passive mode locking fiber laser has the advantages of simple structure, easy mode locking realization, high reliability, strong anti-interference capability, high full-fiber degree and the like, and is a popular device in the field of industrial lasers by replacing the traditional solid mode locking laser.
However, due to the starting characteristic of the passive mode-locked fiber laser, the huge pulse generated during starting can cause damage to the SESAM device, and long-time irradiation can also cause degradation of the mode-locking performance of the SESAM, which can cause slow mode-locking starting or mode-locking failure.
Disclosure of Invention
In order to alleviate mode locking instability caused by the decline of the SESAM mode locking performance, the application provides a power supply power-on method and device and an SESAM picosecond optical fiber laser.
In a first aspect, the present application provides a power supply powering method applied to an SESAM picosecond fiber laser, including:
powering up an oscillation pump laser by using a preset starting current, and judging whether the oscillation pump laser is successfully locked;
if not, adjusting the preset starting current according to the mode locking type of the oscillating pump laser until the mode locking is successful, wherein the mode locking type is multi-pulse mode locking or single-pulse mode locking;
and completing the power-on of the oscillating pump laser by the adjusted preset starting-up current.
In a second aspect, the present application provides a power supply powering device applied to an SESAM picosecond fiber laser, comprising:
the first power-up module is used for powering up the oscillating pump laser by preset starting-up current;
the mode locking judging module is used for judging whether the oscillation pump laser is successfully locked;
the current adjusting module is used for adjusting the preset starting current according to the mode locking type of the oscillating pump laser when the mode locking fails until the mode locking succeeds, wherein the mode locking type is multi-pulse mode locking or single-pulse mode locking;
and the second power-on module is used for completing power-on of the oscillating pump laser by the adjusted preset power-on current.
In a third aspect, the present application provides a SESAM picosecond fiber laser comprising a power supply energizing apparatus according to the second aspect.
In the power supply power-up method and device and the SESAM picosecond optical fiber laser, the oscillating pump laser is powered up by the preset starting current, whether the oscillating pump laser is successfully locked is judged, the preset starting current is adjusted according to the mode locking type of the oscillating pump laser until the mode locking is successful when the mode locking is failed, and the oscillating pump laser is powered up by the adjusted preset starting current, so that the self-adaptive capacity of the SESAM picosecond optical fiber laser can be improved to the maximum extent, the performance degradation caused by long-time use of the SESAM can be solved, meanwhile, the mode locking instability caused by the occurrence of a giant pulse phenomenon can be avoided, and the service life of the SESAM picosecond optical fiber laser is prolonged to the maximum extent.
Drawings
Fig. 1 shows a schematic structural diagram of a SESAM picosecond fiber laser of an embodiment of the present application;
FIG. 2 shows a flow diagram of a power supply power up method of an embodiment of the present application;
FIG. 3 shows a block schematic diagram of a power supply energizing device of an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
Fig. 1 shows a schematic structural diagram of a SESAM picosecond fiber laser of an embodiment of the present application.
As shown in fig. 1, the SESAM picosecond fiber laser includes two parts, a power driving module and a fiber device module. The power supply driving module is responsible for supplying power and enabling the pump laser; the fiber device module includes an oscillating pump laser 101, a first wavelength division multiplexer 102, a first gain fiber 103, a fiber bragg grating 104, a second wavelength division multiplexer 105, an amplifying pump laser 106, a SESAM107, and a second gain fiber 108.
The oscillation pump laser 101 is connected with a first wavelength division multiplexer 102, the first wavelength division multiplexer 102 is respectively connected with a SESAM107 and a first gain fiber 103, the first gain fiber 103 is connected with a fiber Bragg grating 104, the fiber Bragg grating 104 is connected with a second wavelength division multiplexer 105, and the second wavelength division multiplexer 105 is respectively connected with an amplification pump laser 106 and a second gain fiber 108.
In the fiber optic device module, the remaining devices, except for the SESAM107, are connected using optical fibers. The SESAM107 is a non-fiber device, and needs to be mechanically fixed to form a collimated light path with the fiber device.
First, when the SESAM picosecond fiber laser is turned on, the injection power of the oscillating pump laser 101 and the injection power of the amplifying pump laser 102 may be detected, and the turn-on currents applied to the oscillating pump laser 101 and the amplifying pump laser 106 may be adjusted by a power feedback method.
Then, when the SESAM picosecond fiber laser is stably operated, that is, the fluctuation of the injection power of the oscillation pump laser 101 and the injection power of the amplification pump laser 106 is within a preset range, the startup current applied to the oscillation pump laser 101 can be adjusted by whether the oscillation pump laser 101 is successfully mode-locked or not and the mode-locking type.
Finally, when the SESAM picosecond laser operates stably, the oscillation power of the oscillating pump laser 101 can be detected, and the startup current applied to the oscillating pump laser 101 is adjusted in a power feedback manner.
Therefore, the startup current is adjusted through injection power feedback, mode locking pulse detection feedback and oscillation power feedback, and the probability of mode locking failure caused by SESAM performance degradation can be reduced.
Based on the SESAM picosecond optical fiber laser provided by the embodiment of the application, the application also provides a power supply power-up method and device and the SESAM picosecond optical fiber laser. First, the power supply powering method provided in the embodiments of the present application will be described in detail.
Fig. 2 shows a flow diagram of a power supply powering method of an embodiment of the present application. In some embodiments, the power supply powering method provided by the embodiments of the present application may be performed by the power supply driving module described above.
As shown in fig. 2, the power supply powering method includes the steps of:
step 201, powering up the oscillation pumping laser by a preset startup current, and determining whether the mode locking of the oscillation pumping laser is successful.
And step 202, if not, adjusting the preset starting current according to the mode locking type of the oscillating pump laser until the mode locking is successful.
Step 203, the oscillating pump laser is powered up by the adjusted preset startup current.
The specific implementation of the above steps will be described below.
In the embodiment of the application, the oscillation pumping laser is powered up by the preset starting current, whether the oscillation pumping laser is successfully locked is judged, the preset starting current is adjusted according to the mode locking type of the oscillation pumping laser until the mode locking is successful when the mode locking fails, and the power up of the oscillation pumping laser is completed by the adjusted preset starting current, so that the self-adaptive capacity of the SESAM picosecond optical fiber laser can be improved to the maximum extent, the performance degradation caused by the long-time use of the SESAM is solved, and the service life of the SESAM picosecond optical fiber laser is prolonged to the maximum extent.
Specific implementations of the above steps are described below.
In step 201, the power driving module drives a power supply to power up the oscillating pump laser, and after the oscillating pump laser is powered up with a preset startup current, it is determined whether the mode locking of the oscillating pump laser is successful.
The preset power-on current may be set by an operator. In some embodiments, to ensure the stability of the output power of the power supply, when the power driving module powers the oscillating pump laser with the preset power-on current, the specific current value of the preset power-on current may be adjusted in a power feedback manner.
Specifically, the injection power of the oscillating pump laser is detected in real time when the oscillating pump laser is powered up with a preset on-current. If the injection power of the oscillation pump laser exceeds the rated input power of the oscillation pump laser, the current value of the preset starting current can be reduced; if the injection power of the oscillation pump laser is lower than the rated input power of the oscillation pump laser, the current value of the preset starting current can be increased, so that the fluctuation of the injection power of the oscillation pump laser can be controlled within a certain range, and the stability of the output power of the power supply is further ensured.
Of course, when the amplifying pump laser is powered on, the injection power of the amplifying pump laser also needs to be detected in real time, and the current value of the current applied to the amplifying pump laser needs to be adjusted by a power feedback manner, so as to ensure that the injection power fluctuation of the amplifying pump laser can be controlled within a certain range.
The adjustment method of the current value of the current of the amplified pump laser is the same as the adjustment method of the current value of the preset startup current applied to the oscillating pump laser, and is not described herein again.
In some embodiments, if the mode locking of the oscillating pump laser is successful, the power driving module drives the power supply to power up the amplifying pump laser with a preset startup current, so as to complete the power-up operation of the SESAM picosecond fiber laser. It should be noted that after the oscillating pump laser is successfully mode-locked, the subsequent steps do not have to be performed.
In step 202, when the preset startup current is adjusted according to the mode locking type of the oscillating pump laser, the mode locking type of the oscillating pump laser needs to be determined first. In the embodiment of the application, the mode locking type is single pulse mode locking, multi-pulse mode locking or Q-switched mode locking. The single pulse mode locking represents successful mode locking, and the multi-pulse mode locking or Q-switching mode locking represents failed mode locking.
When the mode locking type is multi-pulse mode locking, the power supply driving module can drive the power supply, so that the current value of the preset starting current applied to the oscillation pump laser by the power supply is reduced until the mode locking is successful. In some embodiments, the current applied to the oscillating pump laser at this time can be updated and stored in the power driving module as the preset power-on current for the next time of turning on the oscillating pump laser.
When the mode locking type is Q-switching mode locking, the power driving module can drive the power supply, so that the current value of the preset starting current applied to the oscillation pump laser by the power supply is increased until the mode locking is successful, namely, the mode locking type is changed from Q-switching mode locking to single-pulse mode locking, and the current value at the moment is recorded as the lower limit current of the mode locking interval. And then, the power supply driving module continuously drives the power supply, so that the current value of the preset startup current applied to the oscillation pump laser is continuously increased until the mode locking type is changed from single-pulse mode locking to multi-pulse mode locking, and the current value at the moment is recorded as the upper limit current of the mode locking interval. Finally, the value of the current applied to the oscillating pump laser is determined according to the lower limit current and the upper limit current. In other embodiments, the current applied to the oscillating pump laser at this time may be updated and stored in the power driving module as the preset power-on current for the next time the oscillating pump laser is turned on.
How to determine the current value applied to the oscillating pump laser when the mode locking type is Q-switched mode locking will be described in detail below with reference to a specific example.
In one example, when mode locking fails and the mode locking type is Q-switched mode locking, a mode locking interval search is started, namely, the current value applied to the oscillating pump laser is increased until mode locking succeeds, the mode locking type is changed from Q-switched mode locking to single-pulse mode locking, and the current value I at the time is recorded1As the lower limit value of the mode locking interval; continuing to increase the current value applied to the oscillatory pump laser until the mode locking type is changed from single-pulse mode locking to multi-pulse mode locking, and recording the current value I'1As the upper limit value of the mode locking interval; the mode-locking interval can be determined according to the lower limit value and the upper limit value of the mode-locking interval.
The power driving module drives the power supply, so that the power supply is powered off, searching of the mode locking intervals is repeated, a plurality of mode locking intervals can be obtained, and a lower limit value and an upper limit value exist in each mode locking interval. Taking the maximum value of the lower limit values of the multiple mode locking intervals as the lower limit value of the SESAM picosecond optical fiber laser mode locking interval, namely I is Imax(I1,I2,I3,…,In) Taking the minimum value of the upper limit values of the multiple mode locking intervals as the upper limit value of the SESAM picosecond optical fiber laser mode locking interval, namely I ═ Imin(I′1,I′2,I′3,…,I′1) And finally, taking I ═ I' -I)/2 as the preset startup current for the next startup of the oscillating pump laser.
In step 203, the power driving module drives the power source to complete the power-up of the oscillating pump laser with the current determined in step 203.
In some embodiments, to ensure mode locking consistency, when the SESAM picosecond fiber laser is stably operated, that is, the mode locking of the oscillating pump laser is successful, and the power driving module drives the power supply to complete the power up of the oscillating pump laser, the startup current of the oscillating pump laser may be adjusted again through the feedback of the oscillating power.
Specifically, the oscillation power of the oscillating pump laser is detected in real time after the completion of energization of the oscillating pump laser and the amplifying pump laser. If the oscillation power of the oscillation pump laser exceeds the rated output power of the oscillation pump laser, the current value of the preset starting current can be reduced; if the oscillation power of the oscillation pump laser is lower than the rated output power of the oscillation pump laser, the current value of the preset starting current can be increased, so that the injection power of the oscillation pump laser can be adjusted by adjusting the size of the preset starting current, and the mode locking consistency is further ensured.
In some embodiments, the current applied to the oscillating pump laser at this time can be updated and stored in the power driving module as the preset power-on current for the next time of turning on the oscillating pump laser.
It is noted that while for simplicity of explanation, the foregoing method embodiments have been described as a series of acts or combination of acts, it will be appreciated by those skilled in the art that the present disclosure is not limited by the order of acts, as some steps may, in accordance with the present disclosure, occur in other orders and concurrently. Further, those skilled in the art should also appreciate that the embodiments described in the specification are exemplary embodiments and that acts and modules referred to are not necessarily required by the disclosure.
The above is a description of embodiments of the method, and the embodiments of the apparatus are further described below.
FIG. 3 shows a block schematic diagram of a power supply energizing device of an embodiment of the present application. In some embodiments, the power supply powering device provided by the embodiments of the present application may be included in the power supply driving module described above, or may be implemented as the power supply driving module described above.
As shown in fig. 3, the power supply energizing means includes:
the first power-up module 301 is configured to power up the oscillating pump laser with a predetermined power-on current.
And a mode locking judging module 302, configured to judge whether the mode locking of the oscillating pump laser is successful.
And the current adjusting module 303 is configured to adjust a preset startup current according to a mode locking type of the oscillating pump laser when mode locking fails until mode locking succeeds, where the mode locking type includes single-pulse mode locking, multi-pulse mode locking, and Q-switched mode locking.
And a second power-up module 304, configured to power up the oscillating pump laser with the adjusted preset power-on current.
In some embodiments, the current adjusting module 303 is specifically configured to reduce the current value of the preset startup current until the mode locking is successful when the mode locking type is multi-pulse mode locking.
In some embodiments, the current adjusting module 303 is further configured to increase a current value of a preset startup current when the mode locking type is Q-switched mode locking until the mode locking is successful, and use the preset startup current as a lower limit current of the mode locking interval; continuously increasing the current value of the preset startup current until the mode locking type is changed from single-pulse mode locking to multi-pulse mode locking, and taking the preset startup current as the upper limit current of the mode locking interval; and determining the current value applied to the oscillating pump laser according to the lower limit current and the upper limit current so as to update the preset startup current.
In some embodiments, the current adjustment module 303 is specifically configured to: determining the lower limit current and the upper limit current for multiple times; the average value of the maximum value of the plurality of lower limit currents and the minimum value of the plurality of upper limit currents is used as the current value applied to the oscillating pump laser.
In some embodiments, the second power-up module 304 is further configured to power up the amplifying pump laser at a predetermined power-on current when the mode locking is successful.
In some embodiments, further comprising a first power module for obtaining a first injection power of the oscillating pump laser and amplifying a second injection power of the pump laser; adjusting the current value of the preset starting current according to the first injection power; the current value applied to the amplified pump laser current is adjusted in accordance with the second injection power.
In some embodiments, the first power module is specifically configured to reduce a current value of the preset startup current when the first injection power exceeds a rated input power of the oscillating pump laser, and increase the current value of the preset startup current when the first injection power is lower than the rated input power of the oscillating pump laser; and when the second injection power exceeds the rated input power of the amplification pump laser, reducing the current value of the preset startup current, and when the second injection power is lower than the rated input power of the amplification pump laser, increasing the current value of the preset startup current.
In some embodiments, the apparatus further comprises a second power module for deriving an oscillating power of the oscillating pump laser; and adjusting the preset starting current according to the oscillation power.
In some embodiments, the second power module is specifically configured to reduce a current value of the preset startup current when the oscillation power exceeds a rated output power of the oscillating pump laser; and increasing the current value of the preset startup current when the oscillation power is lower than the rated output power of the oscillation pump laser.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the described module may refer to the corresponding process in the foregoing method embodiment, and is not described herein again.
In another aspect, the present application also provides a SESAM picosecond fiber laser including the above power supply energizing apparatus.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure herein is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the disclosure. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (11)

1. A power supply power-up method is applied to an SESAM picosecond optical fiber laser, and is characterized by comprising the following steps:
powering up an oscillation pump laser by using a preset starting current, and judging whether the oscillation pump laser is successfully locked;
if not, adjusting the preset starting current according to the mode locking type of the oscillating pump laser until the mode locking is successful, wherein the mode locking type comprises single-pulse mode locking, multi-pulse mode locking and Q-switched mode locking;
and completing the power-on of the oscillating pump laser by the adjusted preset starting-up current.
2. The method of claim 1, wherein adjusting the preset startup current according to the mode-locking type of the oscillating pump laser until mode-locking is successful comprises:
and if the mode locking type is the multi-pulse mode locking, reducing the current value of the preset starting current until the mode locking is successful.
3. The method of claim 2, wherein said adjusting said preset startup current according to a mode-lock type of said oscillating pump laser until mode-locking succeeds further comprises:
if the mode locking type is the Q-switching mode locking, increasing the current value of the preset starting current until the mode locking is successful, and taking the preset starting current as the lower limit current of a mode locking interval;
continuously increasing the current value of the preset startup current until the mode locking type is changed from the single-pulse mode locking to the multi-pulse mode locking, and taking the preset startup current as the upper limit current of the mode locking interval;
and determining a current value applied to the oscillating pump laser according to the lower limit current and the upper limit current so as to update the preset startup current.
4. The method of claim 3, wherein determining the value of the current applied to the oscillating pump laser from the lower limit current and the upper limit current comprises:
determining the lower limit current for a plurality of times and determining the upper limit current for a plurality of times;
and setting an average value of a maximum value of the plurality of lower limit currents and a minimum value of the plurality of upper limit currents as a current value applied to the oscillating pump laser.
5. The method of claim 1, further comprising:
and if so, powering up the amplifying pump laser by the preset starting-up current.
6. The method of claim 1, wherein prior to powering up the oscillating pump laser at the preset turn-on current, further comprising:
acquiring first injection power of the oscillation pump laser and second injection power of the amplification pump laser;
adjusting the current value of the preset starting current according to the first injection power;
adjusting a current value applied to the amplified pump laser current according to the second injection power.
7. The method of claim 6,
the adjusting the preset startup current according to the first injection power comprises:
reducing the current value of the preset startup current when the first injection power exceeds the rated input power of the oscillating pump laser, and increasing the current value of the preset startup current when the first injection power is lower than the rated input power of the oscillating pump laser;
said adjusting a current applied to said amplified pump laser in accordance with said second injection power comprises:
and when the second injection power exceeds the rated input power of the amplification pump laser, reducing the current value of the current of the amplification pump laser, and when the second injection power is lower than the rated input power of the amplification pump laser, increasing the current value of the current of the amplification pump laser.
8. The method of claim 1, further comprising, after the step of powering up the oscillating pump laser with the adjusted preset power-on current:
acquiring the oscillation power of the oscillation pump laser;
and adjusting the preset starting current according to the oscillation power.
9. The method of claim 8, wherein the adjusting the preset boot-up current according to the oscillating power comprises:
when the oscillation power exceeds the rated output power value of the oscillation pump laser, reducing the current value of the preset starting current; and increasing the current value of the preset startup current when the oscillation power is lower than the rated output power of the oscillation pump laser.
10. A power supply power-on device applied to an SESAM picosecond optical fiber laser is characterized by comprising:
the first power-up module is used for powering up the oscillating pump laser by preset starting-up current;
the mode locking judging module is used for judging whether the oscillation pump laser is successfully locked;
the current adjusting module is used for adjusting the preset starting current according to the mode locking type of the oscillating pump laser when the mode locking fails until the mode locking succeeds, wherein the mode locking type is multi-pulse mode locking or single-pulse mode locking;
and the second power-on module is used for completing power-on of the oscillating pump laser by the adjusted preset power-on current.
11. A SESAM picosecond fiber laser comprising the power supply energizing apparatus of claim 10.
CN202011085639.6A 2020-10-12 2020-10-12 Power supply power-on method and device and SESAM picosecond optical fiber laser Pending CN112271539A (en)

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CN103944045A (en) * 2014-04-02 2014-07-23 北京工业大学 Tunable pohotonic crystal fiber SESAM mode-locked laser device with large mode field area
CN104078826A (en) * 2014-06-25 2014-10-01 北京工业大学 Subpicosecond large-mode-field-area photonic crystal fiber SESAM mode-locked laser
CN109149328A (en) * 2018-08-23 2019-01-04 中国科学院合肥物质科学研究院 A kind of low-repetition-frequency linear cavity picosecond ytterbium-doping optical fiber laser of ambient stable
CN109244802A (en) * 2018-11-13 2019-01-18 徐州诺派激光技术有限公司 Mode locking operation interval detection system and its working method
CN209561857U (en) * 2019-03-27 2019-10-29 刘振林 A kind of laser fiber picosecond seed source

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