CN209217422U - The subsystem that the ps pulsed laser and ns pulsed laser exported in laser light source is adjusted - Google Patents

Abstract

The utility model discloses the subsystems that the ps pulsed laser and ns pulsed laser exported in a kind of pair of laser light source is adjusted, comprising: mutually matched optical assembly, gain component and gain control module out；The gain component includes: the single mode gain fibre, single mode bundling device and oscillator pump source matched with optical assembly output end out in shape is sequentially connected；Wherein, the pump light that the oscillator pump source generates, the pumping arm through single mode bundling device inject single mode gain fibre, with excitation rare-earth ion and provide laser gain.The utility model provides the subsystem that the ps pulsed laser and ns pulsed laser exported in a kind of pair of laser light source is adjusted, it can carry out gain amplification by light of the gain component to output, so that its average light power when entering amplification system can be obviously improved, so that the amplified output power of seed laser significantly improves, with the extensive requirement for being applied to industry, military field applies nanosecoud pulse laser.

Description

The subsystem that the ps pulsed laser and ns pulsed laser exported in laser light source is adjusted

Technical field

The utility model relates to a kind of seed light source systems used in industry, military field.More specifically, The ps pulsed laser and ns pulsed laser progress to being exported in laser light source that the utility model relates to a kind of in the case of industry, military field The subsystem of adjustment.

Background technique

Tunable high-average power ps pulsed laser and ns pulsed laser light source has a wide range of applications in industry, military field, is based on The ps pulsed laser and ns pulsed laser light source of this scheme is with simple and easy to operate, applied widely, the low equal many advantages of maintenance cost, before Scape is wide.

Nanosecond pulse optical fiber laser can be divided into monostable oscillator and master oscillator adds two kinds of allusion quotations of power amplifier (MOPA) Type structure.

The output power of monostable oscillator structure is primarily limited to vibrate the power termination ability of intracavitary required function device, packet Grating, acousto-optic modulator etc. are included, usually exports mean power within 10W, and generally use discrete light channel structure, it is difficult to real Existing all-fiber.

It is greater than the system of 100W for output mean power, generallys use MOPA structure.Oscillator export mean power compared with Low seed laser, seed laser further promote output power by single-stage or multi-stage power amplifier.

And the prior art objective the disadvantage is that, in the prior art the high-average power nanosecond pulse based on MOPA structure swash Radiant, output light do not regulate and control its output light, therefore the later period is carrying out when entering single-stage or multi-stage power amplifier Optical power in amplification process is limited, is unable to satisfy the needs of high-power light output, can not adapt to industry, military field for receiving The extensive requirement of pulse per second (PPS) laser application.

Utility model content

One purpose of the utility model is to solve at least the above problems and/or defect, and provide and at least will be described later The advantages of.

The utility model is to provide the ps pulsed laser and ns pulsed laser exported in a kind of pair of laser light source there are one purpose and adjusts Whole subsystem can carry out gain amplification by light of the gain component to output, so that it is when entering amplification system Average light power can be obviously improved so that its later period amplified optical output power significantly improves, to be applied to work The extensive requirement that industry, military field apply nanosecoud pulse laser.

In order to realize these purposes and other advantages according to the present utility model, provides and exported in a kind of pair of laser light source The subsystem that is adjusted of ps pulsed laser and ns pulsed laser, comprising: it is mutually matched go out optical assembly, gain component and gain control group Part；

The gain component includes: single mode gain fibre, the list matched with optical assembly output end out in shape is sequentially connected Mould bundling device and oscillator pump source；

Wherein, the pump light that the oscillator pump source generates, the pumping arm through single mode bundling device inject single mode gain light Fibre with excitation rare-earth ion and provides laser gain.

Preferably, wherein it is high that the optical assembly out is configured as the first band logical that output end in laser light source is connected Reflecting mirror；

Wherein, the first band logical high reflection mirror surface is coated with to filter out the spontaneous radiation amplification for vibrating intracavitary generation The band logical deielectric-coating of ASE spectrum.

Preferably, wherein the gain control module includes:

Be connected with single mode bundling device, and by pulse electrical signal delay system control triggering with realize gain-state control and First filtering acoustooptic switch of ASE spectral filtering；

The low reflective grid being connected with the first filtering acoustooptic switch are used to for part signal light being reflected back oscillation chamber and are formed instead Feedback, another part signal light are then exported to rear class；

It is connected with low reflective grid, to strip the pumping light power for leaking to covering on a small quantity, obtains pure seed pulse letter Number it is transmitted to the first low-power cladding light stripper of rear class.

Preferably, wherein the optical assembly out is configured as being triggered by pulse electrical signal delay system, to generate difference Pulsewidth nanosecond seed pulse photodiode；

The gain component further include:

Three end circulators between the output end of photodiode and single mode gain fibre are set, the second filtering acousto-optic is opened It closes, the second low-power covering stripper, power amplification is carried out with the optical signal exported to photodiode.

Preferably, wherein the gain control module includes: the second band logical height being connected with single mode bundling device signal arm Reflecting mirror；

Wherein, the second band logical high reflection mirror reflects signal light, so that it puts in the interior reverse transfer in optical transmission region Greatly, and then by the third port of three end circulators corresponding seed pulse signal is exported.

The utility model is include at least the following beneficial effects: first, the utility model can be by gain component to output Light carry out gain amplification so that its enter amplification system when average light power can be obviously improved so that its later period Amplified optical output power significantly improves, wide to apply applied to industry, military field for nanosecoud pulse laser General requirement.

Second, the utility model by go out optical assembly filter out vibrate intracavitary generation spontaneous radiation amplify ASE spectrum so that Its output light is more pure.

Third, the utility model carries out arrangement output to it by gain control module, so that output light is more pure, symbol It closes and requires.

The further advantage, target and feature of the utility model will be partially reflected by the following instructions, and part will also pass through Research and practice to the utility model and be understood by the person skilled in the art.

Detailed description of the invention

Fig. 1 be the utility model one embodiment in the ps pulsed laser and ns pulsed laser exported in laser light source is adjusted The structural schematic diagram of subsystem；

Fig. 2 be the utility model another embodiment in the ps pulsed laser and ns pulsed laser exported in laser light source is adjusted Subsystem structural schematic diagram.

Specific embodiment

The following describes the utility model in further detail with reference to the accompanying drawings, to enable those skilled in the art referring to explanation Book text can be implemented accordingly.

It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more The presence or addition of a other elements or combinations thereof.

Fig. 1 shows what the ps pulsed laser and ns pulsed laser exported in a kind of pair of laser light source according to the present utility model was adjusted Subsystem way of realization, comprising: mutually matched optical assembly 1, gain component 2 and gain control module 3 out；

The gain component include: matched with optical assembly output end out in be sequentially connected shape single mode gain fibre 20, Single mode bundling device 21 and oscillator pump source 22；

Wherein, the pump light that the oscillator pump source generates, the pumping arm through single mode bundling device inject single mode gain light Fibre with excitation rare-earth ion and provides laser gain, filters acoustooptic switch 30 by first in regulation gain control module 3, Ps pulsed laser and ns pulsed laser output may be implemented.Using gain component used by this scheme and gain control module, there is simple venation Energy height is rushed, the advantage that repetition rate 10-250kHz is adjustable has implementable effect good, strong operability, and power is controllable to be had Sharp place.Also, this mode is a kind of explanation of preferred embodiments, and however, it is not limited to this.When implementing the utility model, Replacement and/or modification appropriate can be carried out according to user's demand.

As shown in Figure 1, the optical assembly out is configured as output end 10 in laser light source and is connected in another example The first band logical high reflection mirror 11；

Wherein, the first band logical high reflection mirror surface is coated with to filter out the spontaneous radiation amplification for vibrating intracavitary generation The band logical deielectric-coating (not shown) of ASE spectrum, the letter using the first band logical high reflection mirror in this scheme, as oscillation chamber Number Feedback Reflectors, surface are coated with the band logical deielectric-coating to filter out the spontaneous radiation amplification ASE spectrum for vibrating intracavitary generation (not shown), the band-pass filtering function having in nanosecond seed units is realized by band logical reflecting mirror, can also pass through filtering acousto-optic Switch is realized.Have light pure using this scheme, implementable effect is good, the benefit of strong operability.Also, it is this Mode is a kind of explanation of preferred embodiments, and however, it is not limited to this.It, can be according to user's need when implementing the utility model It asks and carries out replacement and/or modification appropriate.

As shown in Figure 1, in another example, the gain control module includes:

Be connected with single mode bundling device, and by pulse electrical signal delay system control triggering with realize gain-state control and First filtering acoustooptic switch 30 of ASE spectral filtering is used to carry out tune Q operation to spontaneous emission light in section, to pass through Q-regulating technique generates nanosecond pulse to form nanosecond giant-pulse seed；

The low reflective grid 31 being connected with the first filtering acoustooptic switch are used to for part signal light being reflected back oscillation chamber and are formed Feedback, another part signal light are then exported to rear class；

It is connected with low reflective grid, to strip the pumping light power for leaking to covering on a small quantity, obtains pure seed pulse letter Number it is transmitted to the first low-power cladding light stripper 32 of rear class.Using the first filtering acoustooptic switch of this scheme by pulse electricity Signal delay system control triggering, on the one hand has the function of gain switch, by adjusting its repetition rate and switching pulse width The repetition rate and pulse width of adjustable output signal, on the other hand its internal increase band pass filter, further filters out ASE spectrum；Light through low reflective grid output strips the pumping for leaking to covering on a small quantity through the first low-power cladding light stripper Optical power makes pure seed signal be transmitted to rear class, so that optical signal of its output to rear class, amplified more pure Just, precisely, have implementable effect good, strong operability, the good benefit of adaptability.Also, this mode is one kind The explanation of preferred embodiments, however, it is not limited to this.When implementing the utility model, can be carried out according to user's demand appropriate Replacement and/or modification.

As shown in Fig. 2, the optical assembly out is configured as being touched by pulse electrical signal delay system in another example Hair, to generate the photodiode 12 of distinct pulse widths nanosecond seed pulse；

The gain component further include:

Three end circulators 23, second filtering acousto-optic between the output end of photodiode and single mode gain fibre is set Switch 24, the second low-power covering stripper 25 carry out power amplification with the optical signal exported to photodiode.Using this The photodiode seed pulse of scheme is as seed source, using the Double Pass Amplifier with filtering acoustooptic switch, i.e. nanosecond Seed units pass through the design of its MOPA system structure, enable it to the effect for realizing MOPA system, therefore use this structure can To generate, large energy, the pulse of repetition frequency 10-50MHz is adjustable, the adjustable ps pulsed laser and ns pulsed laser of pulsewidth 10-1000ns is defeated Out, have implementable effect good, strong operability, adaptability is good, the good benefit of tunable effect.Also, this mode A kind of only explanation of preferred embodiments, however, it is not limited to this.When implementing the utility model, can according to user's demand into Row replacement appropriate and/or modification.

As shown in Fig. 2, the gain control module includes: to be connected with single mode bundling device signal arm in another example The second band logical high reflection mirror 33；

Wherein, the second band logical high reflection mirror reflects signal light, so that it is realized reversely within the scope of bandpass spectrum Transmission amplification, and then corresponding seed pulse signal is exported by the third port of three end circulators.Using this scheme to increasing Light after benefit carries out gain control, so that the spectrum of its output is more pure, has implementable effect good, strong operability, The good benefit of adaptability.Also, this mode is a kind of explanation of preferred embodiments, and however, it is not limited to this.Implementing When the utility model, replacement and/or modification appropriate can be carried out according to user's demand.

Number of devices and treatment scale described herein are the explanations for simplifying the utility model.To the utility model The subsystem that the ps pulsed laser and ns pulsed laser exported in laser light source is adjusted application, modifications and variations are to this field It is obvious for technical staff.

It is not only in the description and the implementation although the embodiments of the present invention have been disclosed as above Listed utilization.It can be applied to various fields suitable for the present invention completely.For those skilled in the art, Other modifications may be easily implemented.Therefore without departing from the general concept defined in the claims and the equivalent scope, this reality It is not limited to specific details and legend shown and described herein with novel.

Claims (5)

1. the subsystem that the ps pulsed laser and ns pulsed laser exported in a kind of pair of laser light source is adjusted characterized by comprising phase What is mutually cooperated goes out optical assembly, gain component and gain control module；

The gain component includes: single mode gain fibre, the single mode conjunction matched with optical assembly output end out in shape is sequentially connected Beam device and oscillator pump source；

Wherein, the pump light that the oscillator pump source generates, the pumping arm through single mode bundling device inject single mode gain fibre, with Excitation rare-earth ion simultaneously provides laser gain.

2. the subsystem being adjusted as described in claim 1 to the ps pulsed laser and ns pulsed laser exported in laser light source, special Sign is that the optical assembly out is configured as the first band logical high reflection mirror that output end in laser light source is connected；

Wherein, the first band logical high reflection mirror surface is coated with to filter out the spontaneous radiation amplification ASE light for vibrating intracavitary generation The band logical deielectric-coating of spectrum.

3. the subsystem being adjusted as claimed in claim 2 to the ps pulsed laser and ns pulsed laser exported in laser light source, special Sign is that the gain control module includes:

It is connected with single mode bundling device, and triggering is controlled to realize gain-state control and ASE light by pulse electrical signal delay system First filtering acoustooptic switch of spectral filter；

The low reflective grid being connected with the first filtering acoustooptic switch are used to for part signal light being reflected back oscillation chamber and form feedback, Another part signal light is then exported to rear class；

It is connected with low reflective grid, to strip the pumping light power for leaking to covering on a small quantity, obtains pure seed pulse signal and pass Transport to the first low-power cladding light stripper of rear class.

4. the subsystem being adjusted as described in claim 1 to the ps pulsed laser and ns pulsed laser exported in laser light source, special Sign is that the optical assembly out is configured as being triggered by pulse electrical signal delay system, to generate distinct pulse widths nanosecond seed arteries and veins The photodiode of punching；

The gain component further include:

Be arranged in three end circulators between the output end of photodiode and single mode gain fibre, the second filtering acoustooptic switch, Second low-power covering stripper carries out power amplification with the optical signal exported to photodiode.

5. the subsystem being adjusted as claimed in claim 4 to the ps pulsed laser and ns pulsed laser exported in laser light source, special Sign is that the gain control module includes: the second band logical high reflection mirror being connected with single mode bundling device signal arm；

Wherein, the second band logical high reflection mirror reflects signal light, so that it amplifies in the interior reverse transfer in optical transmission region, into And corresponding seed pulse signal is exported by the third port of three end circulators.