CN106785832A - Pulse fiber laser device - Google Patents

Pulse fiber laser device Download PDF

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CN106785832A
CN106785832A CN201611062026.4A CN201611062026A CN106785832A CN 106785832 A CN106785832 A CN 106785832A CN 201611062026 A CN201611062026 A CN 201611062026A CN 106785832 A CN106785832 A CN 106785832A
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pulse
control signal
laser
according
signal
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CN201611062026.4A
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CN106785832B (en
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唐明
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深圳市杰普特光电股份有限公司
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01SDEVICES 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
    • H01S3/00Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06Construction or shape of active medium
    • H01S3/063Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067Fibre lasers
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01SDEVICES 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
    • H01S3/00Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/10084Frequency control by seeding

Abstract

The invention relates to a pulse fiber laser device. The pulse fiber laser device comprises a light module and further comprises a control signal input end used for receiving a pulse control signal, a pulse width extraction circuit used for extracting the pulse width information of the pulse control signal, a pulse signal processing circuit used for triggering a pulse having a target pulse width according to the pulse width information when a falling edge of the pulse control signal is monitored, a seed source laser device used for generating a seed source light pulse signal according to the pulse, and a pump laser device used for generating a pump light pulse signal having a target power according to a pulse amplitude of the pulse control signal, wherein the light module is used for generating target laser under the action of the seed source light pulse signal and the pump light pulse signal. According to the pulse fiber laser device, a work process requires inputting only one pulse control signal without utilizing multiple wires to transmit various control signals, so the structure can be substantially simplified, reduction of the volume is facilitated, and miniaturization is realized.

Description

脉冲光纤激光器 Pulsed fiber laser

技术领域 FIELD

[0001] 本发明涉及激光器技术领域,特别是涉及一种脉冲光纤激光器。 [0001] The present invention relates to the field of laser technology, particularly to a pulsed fiber laser.

背景技术^ BACKGROUND ^

[0002] 传统的脉冲光纤激光器的控制过程需要使用12根线来传输控制信号。 [0002] The conventional process control pulse fiber laser 12 requires the use of lines to transmit control signals. 12根线包括功率信号线8根,频率信号线1根,脉宽信号线1根以及M0 (主振荡器)开关信号1根。 12 includes a power line signal line 8, a clock signal line, and a pulse width of the signal lines M0 (master oscillator) signals a switch. 这种脉冲光纤激光器在传输控制信号时需要的线数太多,且用于控制的切换开关模块也较多,从而导致结构复杂体积较大,不利于小型化发展。 This pulsed fiber laser too much during the transmission of the control signal required number of lines, and for controlling the switch module is greater, resulting in a large volume of complex structure, is not conducive to miniaturization.

发明内容 SUMMARY

[0003] 基于此,有必要提供一种结构简单且体积较小的脉冲光纤激光器。 [0003] Based on this, it is necessary to provide a simple structure and smaller volume pulsed fiber laser.

[0004] 一种脉冲光纤激光器,包括光模块,还包括:控制信号输入端,用于接收脉冲控制信号;脉宽提取电路,与所述控制信号输入端连接;所述脉宽提取电路用于提取所述脉冲控制信号的脉宽信息;脉冲信号处理电路,分别与所述控制信号输入端、所述脉宽提取电路连接;所述脉冲信号处理电路用于在监测到所述脉冲控制信号的下降沿时,根据所述脉宽信息触发一个具有目标脉宽的脉冲;种子源激光器,与所述脉冲信号处理电路连接,用于根据所述脉冲生成种子源光脉冲信号;以及泵浦激光器,与所述控制信号输入端连接,用于根据所述脉冲控制信号的脉冲幅值生成具有目标功率的泵浦光脉冲信号;所述光模块分别与所述种子源激光器、所述栗浦激光器连接,用于在所述种子源光脉冲信号和所述栗浦光脉冲信号的作用下生成目标激光。 [0004] A pulsed fiber laser comprising an optical module, further comprising: a control signal input for receiving a pulse control signal; pulse extraction circuit connected to the control signal input terminal; extracting circuit for the pulse width extracting said pulse width control information signal; pulse signal processing circuit, respectively connected to the control signal input terminal of the pulse extraction circuit; said pulse signal processing circuit for monitoring the pulse control signal to the when the falling edge, the pulse width information in accordance with a pulse having a target pulse width; seed laser, the pulse signal processing circuit connected to the seed light pulse signal according to the pulse generator; and a pump laser, and said control signal input terminal, for generating a pulse signal having a pump light power in accordance with a target pulse amplitude of the pulse control signal; each of said optical module with said seed laser, the pump laser connected to Li for the action of the seed optical pulse signal and the optical pulse signal Li pump laser for generating a target.

[0005] 上述脉冲光纤激光器的工作过程只需要输入一个脉冲控制信号即可,无需使用多根线来传输各控制信号,从而可以大大简化脉冲光纤激光器的结构,有利于降低其体积,实现小型化。 [0005] The operation of the above fiber laser pulse need only input to a pulse control signal, the control signals transmitted without using a plurality of wires, which can greatly simplify the construction of the pulsed fiber laser, which help to reduce the volume, downsizing .

[0006] 在其中一个实施例中,所述脉冲信号处理电路包括FPGA芯片。 [0006] In one embodiment, the pulse signal processing circuit comprises a FPGA chip.

[0007] 在其中一个实施例中,所述泵浦激光器包括恒流驱动电路;所述恒流驱动电路用于根据所述脉冲控制信号的脉冲幅值生成相应的驱动电流以驱动所述泵浦激光器。 [0007] In one embodiment, the constant current driving circuit comprises a pump laser; the constant current driving circuit for driving current according to the corresponding pulse amplitude of the pulse generating control signals to drive the pump lasers.

[0008] 在其中一个实施例中,所述种子源激光器为功率在10兆瓦〜20兆瓦的激光器。 [0008] In one embodiment, the seed laser is a power source 10 in the laser embodiment MW ~ 20 MW.

[0009] 在其中一个实施例中,还包括存储器;所述存储器用于存储所述脉冲控制信号的脉冲幅值和目标功率的对应关系表;所述栗浦激光器用于根据所述脉冲幅值利用所述对应关系表获取目标功率。 [0009] In one embodiment, further comprising a memory; the memory table for the corresponding target power pulse amplitude and stores the pulse of the control signal; Li pump laser for the amplitude of said pulse using the correspondence table for the target power.

[0010] 在其中一个实施例中,所述存储器还用于存储所述脉冲控制信号的脉宽与目标脉宽的对应关系表;所述脉冲信号处理电路用于根据所述脉冲控制信号的脉宽利用所述对应关系表获取所述目标脉宽。 [0010] In one embodiment, the memory further for storing the pulse width and the target width of the pulse control signal correspondence table; circuit for processing the pulse signal from the pulse signal to the pulse control wide use of the correspondence table to acquire the target pulse width.

[0011] 在其中一个实施例中,所述光模块包括光纤功率放大器。 [0011] In one embodiment, the optical module comprises an optical fiber amplifier.

[0012] 在其中一个实施例中,所述光纤功率放大器采用掺稀土元素光纤作为增益介质。 [0012] In one embodiment, the optical fiber amplifier using rare earth doped fiber as the gain medium.

[0013] 在其中一个实施例中,还包括控制器;所述控制器用于控制所述种子源激光器滞后于所述泵浦激光器开启。 [0013] In one embodiment, further comprising a controller; a controller for controlling the seed laser source lags behind the pump laser is turned on.

[0014] 在其中一个实施例中,还包括控制信号生成电路;所述控制信号生成电路与所述控制信号输入端连接,用于生成所述脉冲控制信号。 [0014] In one embodiment, further comprising a control signal generating circuit; the control signal generating circuit connected to the control signal input terminal, for generating the pulse control signal.

附图说明 BRIEF DESCRIPTION

[0015] 图1为一实施例中的脉冲光纤激光器的结构框图; [0015] FIG. 1 is a block diagram of the pulsed fiber laser according to an embodiment;

[0016] 图2为一实施例中的脉冲光纤激光器工作过程中产生的各脉冲信号的时序图。 [0016] FIG. 2 is a timing chart of the pulse signals in the embodiment of pulsed fiber laser generated during the operation of an embodiment.

具体实施方式 Detailed ways

[0017] 为了使本发明的目的、技术方案及优点更加清楚明白,以下结合附图及实施例,对本发明进行进一步详细说明。 [0017] To make the objectives, technical solutions and advantages of the present invention will become more apparent hereinafter in conjunction with the accompanying drawings and embodiments of the present invention will be further described in detail. 应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。 It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention.

[0018] 参见图1,该脉冲光纤激光器包括控制信号输入端110、脉宽提取电路120、脉冲信号处理电路130、种子源激光器140、栗浦激光器150和光模块160。 [0018] Referring to FIG. 1, the pulsed fiber laser comprises a control signal input terminal 110, a pulse extraction circuit 120, the pulse signal processing circuit 130, the seed laser 140, pump laser 150 and a light chestnut module 160. 其中,脉宽提取电路120、 脉冲信号处理电路130以及栗浦激光器150分别与控制信号输入端110连接。 Wherein the pulse extraction circuit 120, the pulse signal processing circuit 130 and the laser 150 Pu Li are connected to a control signal input terminal 110. 脉冲信号处理电路130还与脉宽提取电路120连接。 A pulse signal processing circuit 130 is also connected to the pulse extraction circuit 120. 种子源激光器140与脉冲信号处理电路130。 The seed laser pulse 140 and the signal processing circuit 130.

[0019] 控制信号输入端110用于接收脉冲控制信号。 [0019] The control signal input terminal 110 for receiving a control signal pulse. 脉冲控制信号可以为一个,类似PWM (Pulse Width Modulation,脉冲宽度调制)的控制信号。 A pulse control signal may be similar to PWM (Pulse Width Modulation, Pulse Width Modulation) control signal. 脉冲控制信号由外部输入,并可以根据实际需要对脉冲控制信号的脉冲宽度(以下均称为脉宽)、脉冲幅值以及频率进行调整,从而对整个脉冲光纤激光器的工作进行控制。 Pulse control signal inputted from the outside, according to actual needs and the pulse width of the control pulse signal (hereafter referred to as pulse width), pulse amplitude, and adjust the frequency to control the operation of the entire pulse fiber laser.

[0020] 脉宽提取电路120用于接收控制信号输入端110输入的脉冲控制信号,并提取其脉宽信息。 [0020] The pulse extraction circuit 120 for receiving a control pulse in control signal 110 input from the signal input terminal, a pulse width and extract information.

[0021] 脉冲信号处理电路130用于接收控制信号输入端110接收到的脉冲控制信号。 [0021] The pulse signal processing circuit 130 for receiving a control signal input terminal 110 receives a control pulse signal. 脉冲信号处理电路130对该脉冲控制信号进行监测,仅在监测到脉冲控制信号的下降沿到来时, 根据脉宽提取电路120提取的脉宽信息触发一个具有目标脉宽的脉冲,以对种子源激光器140进行触发。 A pulse signal processing circuit 130 for monitoring the pulse control signal, only when the detected falling edge of the pulse control signal, a trigger pulse having a pulse width in accordance with the target pulse width information extracted by the extraction circuit 120, the source of the seed 140 laser trigger. 脉冲信号处理电路130可以通过FPGA (Field—Programmable Gate Array,现场可编程门阵列)芯片实现。 The signal processing circuit 130 may pulse (Field Programmable Gate Array Field-Programmable Gate Array) chip by the FPGA. 目标脉度与提取到的脉宽具有一定的对应关系,该对应关系表可以通过存储器进行存储。 A target pulse width of the extracted to a certain correspondence relationship, the correspondence table may be stored by the memory. 在一实施例中,上述脉冲光纤激光器还包括存储器,以存储该对应关系表。 In one embodiment, the pulsed fiber laser further comprises a memory to store the correspondence table. 在其他的实施例中,该脉冲光纤激光器也可以直接向外部获取该对应关系表。 In other embodiments, the pulsed fiber laser can obtain the correspondence table directly to the outside. 由于脉冲信号处理电路130仅在脉冲控制信号的下降沿处触发生成一个脉冲,从而可以实现脉冲光纤激光器的逐脉冲控制,进而精确控制光脉冲的个数。 Since only a pulse signal processing circuit 130 generates a trigger pulse at the falling edge of the pulse of the control signal, whereby the pulse control can be achieved by the pulsed fiber laser, the number of light pulses and thus accurately controlled. 而传统的激光器中,光脉冲需要受到多个信号如频率信号和开光信号的共同决定,如果二者不同步或者开光信号不去计算频率的周期的话,是无法控制光脉冲的个数的。 Traditional laser, need to be light pulse signals together determine a plurality of frequency signals such as optical signals to open and, if both are not synchronized or not the opening signal, then calculating the frequency of the cycle, can not control the number of light pulses. 本实施例中的脉冲光纤激光器可以很好的解决该问题。 Pulsed fiber laser of the present embodiment in the embodiment can solve this problem.

[0022] 种子源激光器140也称为主振动器(Master 0scillator,M0)。 [0022] The seed laser oscillator 140 is also referred to as primary (Master 0scillator, M0). 种子源激光器140和泵浦激光器150构成的光纤激光器称为M0PA结构脉冲光纤激光器。 Fiber laser 140 and the seed laser pumped laser structure 150 is referred M0PA pulsed fiber laser. 种子源激光器140用于在脉冲信号处理电路130输出的脉冲的控制下产生具有目标脉宽的种子源光脉冲信号。 The seed laser 140 for generating the seed light pulse signal having a target pulse width under control of the pulse output from the pulse signal processing circuit 130. 也即, 在本实施例中,通过对输入的脉冲控制信号的脉宽进行提取,即可提取到目标脉宽的相关信息,从而无需再通过单独的控制线(如3线式的SPI协议)来传递目标激光的脉宽信息,进而可以简化结构并降低成本。 That is, in the present embodiment, by the pulse width of the control signal input of the extraction can extract the relevant information of the target pulse width, by eliminating the need to separate control lines (such as the 3 wire SPI protocol) transmitting information of the target to the laser pulse, in turn, may simplify the structure and reduce costs. 同时,由于3线式的SPI协议传递和解码都需要时间,所以开光途中是无法对脉宽进行修改的,而本实施例中可以通过对脉冲控制信号的脉宽的修改,来实现开光途中修改脉宽。 Meanwhile, since the 3-wire SPI protocol transfer and decode will take time, so that the opening on the way is not pulse width modification, and the present embodiment can modify the pulse width pulse control signal to achieve the opening of the way to modify pulse width.

[0023]种子源激光器140采用一个小功率激光器。 [0023] The seed laser 140 uses a low power laser. 该激光器的功率为10MW〜20MW之间,选用波长在1064nm左右。 The power of the laser is between 10MW~20MW, selection of wavelength around 1064nm. 小功率激光器很容易通过驱动电流来直接调制输出参数,如频率、脉宽、脉冲波形以及功率大小等,并通过尾纤把种子源光脉冲信号串联至光模块160中。 Low-power laser is easy to direct modulation by driving current output parameters, such as frequency, pulse width, pulse shape and the size of the power, and by the series of the seed pigtail optical pulse signal to the optical module 160. 光模块160包括光纤功率放大器(Power Amplifier,PA) I62,以对该种子源光脉冲信号进行放大处理。 A power amplifier module 160 comprises an optical fiber (Power Amplifier, PA) I62, the process for amplification of the seed light pulse signal.

[0024]栗浦激光器150用于根据输入的脉冲控制信号的脉冲幅值生成具有目标功率的泵浦光脉冲信号。 [0024] Li pump laser 150 for generating a pulse signal having a target pump light power in accordance with a control signal pulse amplitude of the pulse input. 具体地,目标功率和提取到的幅值具有一定的对应关系,该对应关系表可以通过存储器进行存储,也可以由脉冲光纤激光器直接向外部获取。 Specifically, the target power and the extracted amplitude having a certain correspondence relationship, the correspondence table may be stored through the memory may be acquired directly from the outside to the pulsed fiber laser. 在本实施例中,栗浦激光器150包括恒流驱动电路。 In the present embodiment, Li pump laser driving circuit 150 comprises a constant current. 恒流驱动电路用于根据脉冲控制信号的幅值生成相应的驱动电流以驱动栗浦激光器,从而使得泵浦激光器150生成具有目标功率的泵浦光脉冲信号。 Constant current driving circuit for generating a driving current corresponding to the amplitude of the pulse control signals to drive the laser Li Pu, so that the pump laser 150 generates a pump optical pulse signal having a target power. 也即,在本实施例中,将脉冲控制信号的幅值作为模拟量,来控制泵浦激光器的电流,从而无需专门的数模转换芯片来将脉冲控制信号转换为模拟信号,也即省去了一个数模转换芯片,从而可以节省成本并降低整个脉冲光纤激光器的结构的复杂度。 That is, in the present embodiment, the pulse amplitude control signal as an analog quantity, to control the current of the pump laser, so that no special digital to analog conversion chip to the pulse control signal to an analog signal, i.e. dispensed a digital-analog converter chip, so as to save cost and reduce the complexity of the overall structure of a pulsed fiber laser.

[0025] 光模块160在种子源激光器140发出的种子源光脉冲信号和栗浦激光器150发出的泵浦光脉冲信号的共同作用下生产目标激光。 [0025] The production target laser light module 160 under the action of the seed optical pulse signal emitted by the seed laser 140 and a pump optical pulse signal emitted by laser 150 Pu Li. 目标激光的脉冲宽度与种子源激光器140的种子源光脉冲信号的脉宽相同,并且其频率与种子源光脉冲信号的频率相同。 The seed laser pulse width is the same as the target pulse seed laser light pulse signal 140, and its frequency to the frequency of the seed light pulse signal is the same. 目标激光的功率由泵浦激光器150的泵浦光脉冲信号的目标功率来决定。 Target laser power is determined by the target power pump laser pump optical pulse signal 150. 在本实施例中,光模块160的光纤功率放大器采用掺稀土元素光纤作为增益介质。 In the present embodiment, the optical fiber amplifier module 160 using rare earth doped fiber as the gain medium. 由泵浦激光器140所产生的栗浦光脉冲信号在光纤纤芯内形成高功率密度使得掺杂稀土离子能级形成“粒子数反转”,最后在光纤介质中因种子源光脉冲信号产生受激福射,形成目标激光。 Li pump optical pulse signal generated by the pump laser 140 in the optical fiber core is formed of high power density level is formed so that the rare earth ions doped "inversion" of the last generation by stimulated Four seed optical pulse signal in an optical fiber medium, radio, laser target is formed.

[0026] 脉冲光纤激光器工作过程中产生的各脉冲信号的时序图如图2所示。 A timing chart of the pulse signal [0026] pulsed fiber laser is generated during the operation shown in FIG. 图2中,脉冲控制信号的脉宽与脉冲光纤激光器内的各脉冲的脉宽具有一定的比例关系。 In FIG. 2, the pulse width of each pulse within a pulse fiber laser pulse control signal having a certain proportion. 因为激光器的脉宽都是纳秒级的,而脉冲控制信号(也即外部控制信号)需要传递功率信号,其脉宽在微秒级以上。 Because the pulse width of the laser is a nanosecond, the pulse control signal (i.e. an external control signal) need to pass a power signal, the pulse width in microseconds or more thereof. 从图2中可以看出,脉冲控制信号的幅值可调,且幅值大小同样要和栗浦激光器150的驱动电流设定一定的比例关系。 As can be seen from Figure 2, the pulse control signal with adjustable amplitude, and the amplitude of the same size and the drive current to pump laser 150 is set to Li certain proportion. 为确保准确触发激光器的脉冲信号,脉冲控制信号需要清晰无抖动的下降沿。 To ensure accurate trigger pulse laser pulse control signal needs to clear a jitter-free falling.

[0027] 从图2上可以看出,该脉冲光纤激光器工作时,外部只需要提供一个脉冲控制信号来控制脉冲光纤激光器的功率、频率、开光和关光即可,其无需使用多根线来传输各控制信号,从而可以大大简化脉冲光纤激光器的结构,有利于降低其体积,实现小型化。 [0027] As can be seen from Figure 2, when the pulsed fiber laser operating, only need to provide an external control signal to control a pulsed fiber laser pulse power, frequency, light off the light to the opening, which without the use of a plurality of lines transmitting control signals, which can greatly simplify the construction of the pulsed fiber laser, help to reduce the volume thereof can be miniaturized. 并且可以对每个脉冲的宽度,和高度进行控制,精确到每个脉冲,从而实现对脉冲光纤激光器的精准控制。 And may be made to the width and height of each pulse control, accurate to each pulse, in order to achieve precise control of the pulsed fiber laser.

[0028] 在一实施例中,上述脉冲光纤激光器在前述实施例的基础上,还包括控制信号生成电路和控制器。 [0028] In one embodiment, the pulse fiber lasers based on the aforementioned embodiment, further comprising a control signal generating circuit and a controller. _ _

[0029] 控制信号生成电路与控制信号输入端连接。 [0029] The control signal generating circuit connected to the control signal input terminal. 控制信号生成电路用于根据实际需要生成的激光生成具有一定幅值、脉宽和频率的脉冲控制信号。 A control signal generating circuit for generating a pulse width control signal having a certain amplitude and frequency according to the actual needs of the generated laser. _ _

[0030] 控制器则用于对泵浦激光器150和种子源激光器140的工作进行控制。 [0030] The controller is used to work the seed pump laser 150 and laser 140 is controlled. 具体地,控制器用于控制种于源微光器140滞后于泵浦激光器150开启,从而避免出现首个脉冲信号没有输出且受到预冲能的大小影响的问题。 In particular, a controller for controlling the seed in dim light source 140 lags behind the pump laser 150 is turned on, thereby avoiding the first pulse signal is not outputted and subjected to priming problems can affect the size.

[0031]以上所述实施例的各技术特征可以进行任意的组合,为使描述简洁,未对上述实施例中的各个技术特征所有可能的组合都进行描述,然而,只要这些技术特征的组合不存在矛盾,都应当认为是本说明书记载的范围。 [0031] each of the above embodiments of the technical features of any combination can be, for the brevity, not each of the technical features of the embodiments described above are all the possible combinations will be described, however, as long as the combination of these features is not contradiction, they are to be considered in the scope described in this specification.

[0032]以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对发明专利范围的限制。 [0032] The above embodiments are only expressed several embodiments of the present invention, and detailed description thereof is more specific, but can not therefore be understood to limit the scope of the invention. 应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若千变形和改进,这些都属于本发明的保护范围。 It should be noted that those of ordinary skill in the art, without departing from the spirit of the present invention is provided, may also be made if one thousand variations and modifications which fall within the protection scope of the present invention. 因此,本发明专利的保护范围应以所附权利要求为准。 Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. 一种脉冲光纤激光器,包括光模块,其特征在于,还包括: 控制信号输入端,用于接收脉冲控制信号; 脉宽提取电路,与所述控制信号输入端连接;所述脉宽提取电路用于提取所述脉冲控制信号的脉宽信息; 、 脉冲信号处理电路,分别与所述控制信号输入端、所述脉宽提取电路连接;所述脉冲信号处理电路用于在监测到所述脉冲控制信号的下降沿时,根据所述脉宽信息触发一个具有目标脉宽的脉冲; 种子源激光器,与所述脉冲信号处理电路连接,用于根据所述脉冲生成种子源光脉冲信号;以及、_ 栗浦激光器,与所述控制信号输入端连接,用于根据所述脉冲控制信号的脉冲幅值生成具有目标功率的泵浦光脉冲信号; > 所述光模块分别与所述种子源激光器、所述栗浦激光器连接,用于在所述种子源光脉冲信号和所述泵浦光脉冲信号的作用下生成目 A pulsed fiber laser comprising an optical module, characterized by further comprising: a control signal input for receiving a pulse control signal; pulse extraction circuit connected to the control signal input terminal; extracting the pulse width circuitry for extracting said pulse width control information signal; pulse signal processing circuit, respectively connected to the control signal input terminal, connected to the pulse extraction circuit; said pulse signal processing circuit configured to monitor the when the fall of the pulse of the control signal, information of a trigger pulse having a pulse width according to the target pulse width; seed laser source, and the pulse signal processing circuit, a source for generating seed light pulse said pulse signal; and , _ Li pump lasers, and the control signal input terminal, for generating a pulse signal having a pump light power in accordance with a target pulse amplitude of the pulse control signal;>, wherein each optical module and the seed laser source the pump laser is connected to Li, under the effect of the seed for the optical pulse signal source, and said pump optical pulse signal generated mesh 激光。 Laser.
2. 根据权利要求1所述的脉冲光纤激光器,其特征在于,所述脉冲信号处理电路包括FPGA芯片。 2. The pulsed fiber laser according to claim 1, wherein said pulse signal processing circuit comprises a FPGA chip.
3. 根据权利要求1所述的脉冲光纤激光器,其特征在于,所述栗浦激光器包括恒流驱动电路;所述恒流驱动电路用于根据所述脉冲控制信号的脉冲幅值生成相应的驱动电流以驱动所述栗浦激光器。 According to claim pulsed fiber laser of claim 1, wherein said pump laser comprises Li constant current driving circuit; the constant current driving circuit for generating a corresponding driving pulse according to the pulse amplitude control signal Li current to drive the pump laser.
4. 根据权利要求1所述的脉冲光纤激光器,其特征在于,所述种子源激光器为功率在10 兆瓦〜20兆瓦的激光器。 According to claim pulsed fiber laser of claim 1, wherein said seed laser is ~ 20 MW 10 MW power lasers.
5. 根据权利要求1所述的脉冲光纤激光器,其特征在于,还包括存储器;所述存储器用于存储所述脉冲控制信号的脉冲幅值和目标功率的对应关系表;所述栗浦激光器用于根据所述脉冲幅值利用所述对应关系表获取目标功率。 5. The pulsed fiber laser according to claim 1, characterized by further comprising a memory; the memory table for the corresponding target power pulse amplitude and stores the pulse of the control signal; said pump laser with Li the correspondence table to acquire the target power based on the use of pulse amplitude.
6. 根据权利要求5所述的脉冲光纤激光器,其特征在于,所述存储器还用于存储所述脉冲控制信号的脉宽与目标脉宽的对应关系表;所述脉冲信号处理电路用于根据所述脉冲控制信号的脉宽利用所述对应关系表获取所述目标脉宽。 6. A pulsed fiber laser according to claim 5, wherein the memory further for storing the pulse width and the target width of the pulse control signal correspondence table; said pulse signal processing circuit according to said pulse width control signal using the correspondence table to acquire the target pulse width.
7. 根据权利要求1所述的脉冲光纤激光器,其特征在于,所述光模块包括光纤功率放大器。 According to claim pulsed fiber laser of claim 1, wherein said optical module comprises an optical fiber amplifier. ___ ___
8. 根据权利要求7所述的脉冲光纤激光器,其特征在于,所述光纤功率放大器采用掺稀土元素光纤作为增益介质。 According to claim pulsed fiber laser of claim 7, wherein the optical fiber amplifier using rare earth doped fiber as the gain medium.
9. 根据权利要求1所述的脉冲光纤激光器,其特征在于,还包括控制器;所述控制器用于控制所述种子源激光器滞后于所述泵浦激光器开启。 According to claim pulsed fiber laser of claim 1, wherein further comprising a controller; a controller for controlling the seed laser source lags behind the pump laser is turned on.
10. 根据权利要求1所述的脉冲光纤激光器,其特征在于,还包括控制信号生成电路;所述控制信号生成电路与所述控制信号输入端连接,用于生成所述脉冲控制信号。 10. The pulsed fiber laser according to claim 1, characterized by further comprising a control signal generating circuit; the control signal generating circuit and the control signal input terminal, for generating the pulse control signal.
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