JP2022121108A - Laser electron optical generation device and laser light source device - Google Patents

Abstract

To provide a laser electron optical generation device and a laser light source device, capable of improving accuracy of a collision timing and obtaining a laser electron light with a high light amount.SOLUTION: A laser electron optical generation device comprises: a light source part having a seed light source that generates a pulse laser beam by a gain switching method; an electron beam generation part that generates the pulse electron beam; a laser electron light generation part that makes the pulse electron beam generated in the electron beam generation part and the pulse laser beam generated in the light source part, collide to generate a laser electron light by inverse Compton scattering ; and a trigger signal generation part that generates a trigger signal for adjusting a collision timing with the pulse electron beam in the laser electron light generation part, and generates the trigger signal for driving the seed light source.SELECTED DRAWING: Figure 2

Description

The present invention relates to a laser electronic light generator and a laser light source device.

2. Description of the Related Art A laser electron beam generator that generates laser electron beams such as X-rays or γ-rays through inverse Compton scattering by colliding an electron beam with a pulsed laser beam has attracted attention for medical and analytical purposes. Further, for the popularization of laser electron beam generators, miniaturization, high brightness, and high efficiency are desired.

As shown in FIG. 1, the laser electron beam is a beam that is characterized by propagating while spreading in a conical shape from the point of origin. The pulsed electron beam is moving at the speed of light (3×10 ⁸ m/s), and when the collision timing with the pulsed laser light is shifted, the generation point of the laser electron beam is greatly shifted. For example, a 1 nanosecond shift shifts the collision point by 0.3 m. Therefore, if there is a temporal variation in collision timing, the brightness will decrease.

The photon energy (hν) of X-rays (scattered photons) scattered by laser inverse Compton scattering is defined by hν ₀ as the photon energy of the laser (incident photon) and γm ₀ c ² as the energy of the electron beam (where γ is the Lorentz factor , _m0 is the rest mass of the electron, c is the speed of light), θ is the collision angle with the laser, and φ is the scattering angle of the scattered X-rays (scattered photons).

As shown in [Formula 1], the photon energy of the laser electron beam is determined by the energy of the pulsed electron beam (γm ₀ c ² ) and the photon energy of the pulsed laser beam (hν ₀ ).

Further, the intensity of the laser electron beam is given by the number of collisions per short time f, the scattering cross section σ _T of Thomson scattering, the beam diameters of the pulsed electron beam and the pulsed laser beam, the number of electrons ne, and the number of photons np. , can be expressed by the following equation.

A pulsed electron beam forms an electron bunch in which electrons are spatially dense in the acceleration process by an accelerator. The time width of the pulsed electron beam is about 10 picoseconds. The light quantity of the laser electron light beam is given by [Equation 2] described above and is proportional to the number ne of electrons. However, since electrons themselves have a negative charge, an increase in ne increases the repulsive force within the electron bunch, expanding the electron bunch. As a result, the photoelectron beam generation region expands, causing a decrease in brightness. Therefore, in order to increase the amount of light while maintaining the brightness, it is necessary to increase the number of collisions f per short period of time.

Patent Document 1 discloses an X-ray generator that generates X-rays by inverse Compton scattering by colliding an electron beam and a laser beam as a collision timing adjustment device for the purpose of suppressing temporal variations in collision timing. A collision timing adjustment device for an electron beam and a laser beam is disclosed.

The collision timing adjustment device includes an electron beam detection device that is provided on the electron beam passage path and detects the passage of the electron beam without affecting the electron beam, and a predetermined delay time after detecting the passage of the electron beam. and a laser light command delay circuit for outputting a laser light generation command later, wherein the installation position of the electron beam detection device is a beam delay from the time when the electron beam passes until the electron beam reaches the scheduled collision point. The time is set to be longer than the laser delay time from when the laser light generation command is issued until the laser light reaches the predetermined collision point.

2009-16123 publication

According to the laser electron beam generator equipped with the collision timing adjustment device as described in Patent Document 1, it is possible to accurately adjust the collision timing between the pulsed electron beam and the pulsed laser beam.

However, a Q-switch type pulse laser is used as the seed light source, and the time jitter from the command to generate the laser light to the generation of the pulse laser is as large as several nanoseconds. In addition, since the pulse width (time width) of the pulsed laser light is as long as several nanoseconds, the energy of the pulsed laser light is not effectively utilized in the collision with the pulsed electron beam whose pulse width (time width) is about 10 picoseconds. In addition, since the repetition frequency is generally as low as several hundred kHz, the number of collisions f per short time cannot be obtained sufficiently, and thus it is insufficient from the viewpoint of obtaining high-intensity laser electron beams.

Further, when the pulsed laser light output from the seed light source is wavelength-converted into UV light, if the beam diameter of the pulsed laser light input to the wavelength conversion element is narrowed in order to increase the peak power, the wavelength conversion efficiency will decrease and Also, there is a problem that the wavelength conversion element is thermally damaged.

Therefore, it is conceivable to use a mode-locked laser with a short pulse width (time width) of several picoseconds as the seed light source. As a result, there is a problem that the accuracy of the collision timing cannot be obtained due to the influence of the temporal variation of the pulsed laser beam of several tens to several hundreds of nanoseconds.

SUMMARY OF THE INVENTION An object of the present invention is to provide a laser electron beam generating device and a laser light source device capable of improving the accuracy of collision timing and obtaining high-intensity and high-intensity laser electron beams.

In order to achieve the above object, the first characteristic configuration of the laser electron beam generator according to the present invention is a light source unit having a seed light source for generating a pulsed laser beam by a gain switching method, and an electron beam for generating a pulsed electron beam. a generator, and a laser electron beam generator for generating laser electron beams by inverse Compton scattering by causing the pulsed electron beam generated by the electron beam generator and the pulsed laser beam generated by the light source to collide with each other. and a trigger signal generator for generating a trigger signal for adjusting the collision timing with the pulsed electron beam in the laser electron beam generator and for driving the seed light source.

A seed light source is driven by a gain switching method according to a trigger signal generated by a trigger signal generator, whereby a picosecond pulsed laser beam can be obtained without temporal variations, and can collide with a pulsed electron beam with high precision. It becomes possible to obtain a high-intensity, high-intensity laser electron beam. By driving the seed light source by the gain switching method, pulsed laser light can be generated at a high repetition frequency, and the number of collisions per unit time can be increased to obtain a laser electron light beam with a higher light intensity. become.

In the second characteristic configuration, in addition to the first characteristic configuration described above, the light source unit includes a hybrid optical amplifier that amplifies the pulsed laser light output from the seed light source, and It is characterized in that it has a wavelength conversion section that converts the wavelength of the pulsed laser beam.

The hybrid amplifier can increase the peak power of the pulsed laser light output from the seed light source, and the wavelength conversion unit can obtain high-output pulsed laser light with high photon energy whose wavelength is converted.

The third characteristic configuration is that, in addition to the first or second characteristic configuration described above, the pulse width of the pulsed laser light output from the seed light source is 0.1 picoseconds to 100 picoseconds. .

A pulsed laser beam with a pulse width of 0.1 picoseconds to 100 picoseconds can be preferably used to obtain a high-intensity laser electron beam.

The fourth characteristic configuration is, in addition to any one of the first to third characteristic configurations described above, the trigger signal generating unit, in which the collision point between the electron bunch of the pulsed electron beam and the pulsed laser beam is always the pulsed laser beam. The point is that the trigger signal is generated so as to be within the Rayleigh length of .

While the beam diameter of the pulsed electron beam is generally constant, the beam diameter of the pulsed laser light varies greatly with propagation distance. If the point of collision with the electron bunch deviates from the optimum position, the beam diameter of the laser beam increases and the light intensity of the laser electron beam drops dramatically. However, the pulsed laser light can be collided with the electron bunch within the Rayleigh length of the pulsed laser light, and a high-intensity laser electron beam can be obtained.

The fifth characteristic configuration includes, in addition to any one of the first to fourth characteristic configurations described above, a pulsed electron beam detection section for detecting synchronization timing of the pulsed electron beam generated by the electron beam generation section. and the trigger signal generator generates the trigger signal based on the synchronization timing of the pulsed electron beam detector.

The trigger signal generator generates the trigger signal based on the synchronization timing of the pulsed electron beam detected by the pulsed electron beam detector, so that the pulsed laser light can be accurately collided with the electron bunch.

The sixth characteristic configuration includes, in addition to any one of the first to fifth characteristic configurations described above, an intensity detection unit for detecting the intensity of the laser electron beam generated by the laser electron beam generation unit, The trigger signal generator generates the trigger signal based on the intensity of the laser electron beam detected by the intensity detector.

The trigger signal generator generates the trigger signal based on the intensity of the laser electron beam detected by the intensity detector, so that the pulsed laser beam can collide with the electron bunch with high accuracy.

A first characteristic configuration of a laser light source device according to the present invention is a laser light source device used in a laser electron beam generator having any one of the first to seventh characteristic configurations described above, wherein a seed light source for generating pulsed laser light by a gain switching method, a hybrid optical amplifier for amplifying the pulsed laser light output from the seed light source, and a wavelength converter for converting the wavelength of the pulsed laser light amplified by the hybrid optical amplifier. It is in that it is equipped with a part and

The second characteristic configuration includes, in addition to the first characteristic configuration described above, a CW light source that generates CW light, and driving the CW light source based on the trigger signal to adjust the excitation state of the hybrid optical amplifier. and a CW light source controller for controlling the light source.

For example, when the cycle of the trigger signal is long and the pulsed laser light is output from the seed light source in a state where each optical amplifier constituting the hybrid optical amplifier is in an abnormally high excitation state, the hybrid optical amplifier causes the peak power to rise. An abnormally high pulsed laser beam is generated, and not only the intensity of the laser electron beam becomes unstable, but also the optical amplifier and the wavelength converter may be damaged. Even in such a case, the CW light source control unit drives the CW light source based on the generation of the trigger signal to adjust the excitation state of the hybrid optical amplifier, stabilize the intensity of the laser electron optical beam, and stabilize the intensity of the optical amplifier. and damage to the wavelength conversion section can be avoided.

As described above, according to the present invention, it is possible to provide a laser electron beam generator and a laser light source device capable of improving the accuracy of collision timing and obtaining high-luminance, high-intensity laser electron beams. rice field.

Illustration of inverse Compton scattering Functional block configuration diagram of the laser electron beam generator Functional block configuration diagram of the laser light source device Explanatory diagram of the relationship between the electron bunch of the pulsed electron beam and the collision point of the pulsed laser beam Characteristic diagram of intensity of laser electron beam versus average output of pulsed laser beam

Embodiments of a laser electron beam generator and a laser light source device according to the present invention will be described below. FIG. 2 shows the functional block configuration of the laser electron beam generator.

A laser electron beam generator 100 includes a light source unit 1 having a seed light source for generating a pulsed laser beam by a gain switching method, an electron beam generating unit 2 for generating a pulsed electron beam, and an electron beam generated by the electron beam generating unit 2. A laser electron beam generator 3 for generating laser electron beams by inverse Compton scattering by colliding the pulsed electron beam with the pulsed laser beam generated by the light source unit 1, and the pulsed electron beam for controlling the electron beam generator 2. A control unit 4 and a trigger signal generation unit 5 for generating a trigger signal for adjusting the collision timing with the pulsed electron beam in the laser electron beam generation unit 3 and for driving the seed light source.

The electron beam generator 2 includes an RF electron gun driven by an X-band (11.424 GHz) high-frequency power supply, an acceleration tube, etc., and a pulsed electron beam controller 4 generates high-energy electron beams of several tens of MeV. do.

The electron beam generator 2 is controlled by a pulsed electron beam controller 4, and electron bunches with a bunch interval of 23.6 nanoseconds are emitted toward the laser electron beam generator 3, for example.

The pulsed electron beam emitted from the electron beam generator 2 is input to the laser electron beam generator 3, deflected by the deflection magnet on the input side so as to follow a straight path, and passes through the collision part set on the straight path. After that, it is emitted outside by the bending magnet on the output side and absorbed by the electron beam damper.

As shown in FIG. 3, the light source unit 1 includes a seed light source 10, a CW light source 20, a hybrid optical amplifier 30, a wavelength conversion unit 40, a laser driver D1 that drives the seed light source 10, and a CW light source 20. It has a laser driver D2 that The light source unit 1 functions as a laser light source device of the present invention.

Further, the light source unit 1 includes a trigger signal generation unit 50 that drives the laser driver D1 and a CW light source drive unit 60 that drives the laser driver D2. Both the seed light source 10 and the CW light source 20 are distributed feedback laser diodes (hereinafter referred to as "DFB lasers") that output laser light in a single longitudinal mode.

A pulsed laser beam having a pulse width of 0.1 picoseconds to 100 picoseconds is output from the DFB laser 10 for one drive signal output from the trigger signal generator 50 via the laser driver D1. The light source unit 1 responds to trigger signals up to several hundred megahertz without time variations, and responds accurately to complex trigger signal patterns.

A trigger signal having a predetermined pulse width is output from the trigger signal generator 50 to the driver D1 of the DFB laser 10 to cause the seed light source 10 to emit light using the gain switching method. When a pulse current corresponding to the trigger signal is applied from the drive circuit to the DFB laser 10, relaxation oscillation occurs, and sub-pulses from the second wave onward consist of only the first wave having the highest emission intensity immediately after the start of light emission due to the relaxation oscillation. A pulsed laser beam that does not contain is output. The gain switching method is a method of generating pulsed light with a short pulse width and a large peak power using such relaxation oscillation.

The hybrid optical amplifier 20 comprises a two-stage fiber amplifier and a one-stage solid-state amplifier connected in series, and pulsed light with a wavelength of 1064 nm output from the seed light source 10 is amplified by the two-stage fiber amplifiers 22 and 24, and further It is amplified to the desired level with a single stage solid state amplifier.

As the fiber amplifier, a rare-earth-doped optical fiber such as an ytterbium (Yb)-doped fiber amplifier that is pumped by a pumping light source with a predetermined wavelength (for example, 975 nm) is used.

As the solid-state amplifier 50, a solid-state laser medium such as Nd:YVO4 crystal or Nd:YAG crystal is preferably used. A solid-state laser medium is excited by excitation light beam-shaped by a collimator output from an excitation light source composed of a laser diode with an emission wavelength of 808 nm or 888 nm.

The pulsed light with pulse energy of several picojoules to several hundred picojoules output from the seed light source 10 is finally amplified by the optical amplifier 20 into pulsed light with pulse energy of several tens of microjoules to several tens of millijoules.

The number of fiber amplifiers and solid-state amplifiers is not particularly limited, and may be appropriately set in order to obtain a desired amplification factor for pulsed light. For example, three fiber amplifiers may be cascaded followed by two solid state amplifiers. In either case, the pumping laser light source of each optical amplifier is constantly driven.

As the wavelength conversion element 30, two types of nonlinear optical elements are used: LBO crystal (LiB ₃ O ₅ ) and CLBO crystal (CsLiB ₆ O ₁₀ ). Pulsed light with a wavelength of 1064 nm, which is output from the seed light source 10 and amplified to a predetermined level by the optical amplifier 20, is wavelength-converted to a wavelength of 532 nm by an LBO crystal (LiB ₃ O ₅ ), and further by a CLBO crystal (CsLiB ₆ O ₁₀ ). It is wavelength-converted into deep ultraviolet rays with a wavelength of 266 nm. The number and types of nonlinear optical elements can be appropriately selected according to the desired wavelength.

Returning to FIG. 1, the description continues. A pulsed laser beam output from the light source unit 1 enters a pulsed laser beam introduction unit 6, passes through a deflecting mirror on the incident side, a condensing lens, and a deflecting mirror on the emitting side, and enters the laser electron beam generating unit 3. The pulsed electron beam is incident in the opposite direction to the traveling direction of the pulsed electron beam toward the colliding portion.

Laser electron light, which is X-rays or γ-rays due to inverse Compton scattering generated by colliding the pulsed electron beam and the pulsed laser light at the collision part, is transmitted through the deflecting mirror on the output side, which is a half mirror, and is output to the outside. be. The pulsed laser beam that has passed through the collision part is attenuated by the optical damper.

The trigger signal generator 5 generates a synchronization signal output from the pulse electron beam controller 4, that is, a timing signal synchronized with the electron bunch generated by the electron beam generator 2 and a predetermined time before the electron bunch reaches the collision position. As a reference, a trigger signal for driving the seed light source is generated when the delay time set for colliding with the pulsed electron beam at the collision part has passed or before or after that.

More specifically, the trigger signal generation unit 5 uses the synchronizing signal output from the pulse electron beam control unit 4 as a reference so that the collision point between the electron bunch of the pulse electron beam and the pulse laser beam is always within the Rayleigh length of the pulse laser beam. Generate a trigger signal that fits in

While the beam diameter of the pulsed electron beam is constant, the beam diameter of the pulsed laser light varies greatly with propagation distance. If the point of collision with the electron bunch deviates from the optimum position, the beam diameter of the laser beam increases and the light intensity of the laser electron beam drops dramatically. However, the pulsed laser light can collide with the electron bunch within the Rayleigh length of the pulsed laser light, and a high-intensity and high-intensity laser electron light beam can be obtained.

FIG. 4(a) shows an ideal mode of collision with the pulsed electron beam at the point where the beam diameter of the pulsed laser beam is the smallest, and FIG. 4(b) shows the point where the pulsed laser beam is within the Rayleigh length, that is FIG. 4(c) shows a mode in which the pulsed electron beam collides with the pulsed electron beam within the allowable range, and FIG.

The above-described pulsed electron beam control unit 4 functions as a pulsed electron beam detection unit that detects the synchronization timing of the pulsed electron beam generated by the electron beam generation unit 2, and the trigger signal generation unit 5 functions as the pulsed electron beam control unit 4. is configured to generate a trigger signal based on the timing based on the synchronization signal output from the .

A coil for detecting the passage timing of the electron bunch passing through the electron storage ring provided in the electron beam generator 2 may be provided, and the coil may function as the pulsed electron beam detector.

The trigger signal generator generates the trigger signal based on the synchronization timing of the pulsed electron beam detected by the pulsed electron beam detector, so that the pulsed laser light can be accurately collided with the electron bunch.

An intensity detector for detecting the intensity of the laser electron beam generated by the laser electron beam generator 3 is further provided, and the trigger signal generator 5 generates a trigger signal based on the intensity of the laser electron beam detected by the intensity detector. It may be configured as

At this time, it is possible to correct the output timing of the trigger signal generated based on the synchronization signal output from the pulse electron beam control unit 4 based on the intensity of the laser electron beam detected by the intensity detection unit. Furthermore, it becomes possible to cause the pulsed laser beam to collide with the electron bunch with high accuracy.

FIG. 5A shows a state in which an electron bunch passing through the electron storage ring provided in the electron beam generator 2 circulates at 23.6 nanoseconds.
FIG. 5(b) shows the intensity characteristics of the laser electron beam when the pulsed laser beam collides with one of such electron bunches incident on the laser electron beam generator 3 from the electron beam generator 2. In FIG. ing.

It is confirmed that the intensity of the laser electron beam is saturated when the average output of the pulsed laser beam is increased. Therefore, by shortening the repetition period of the pulsed laser light while driving at a low average output before saturation without increasing the average output of the pulsed laser light, the number of collisions per short period of time is increased and the light intensity is further increased. of laser electron light beams can be obtained.

Depending on the period of the synchronization signal output from the pulsed electron beam control unit 4, the excitation state of the hybrid optical amplifier may fluctuate, affecting the intensity of the pulsed laser beam and possibly causing the intensity of the laser electron beam to fluctuate. .

In preparation for such a case, the light source unit 1 includes a CW light source 20 that generates CW light, and a CW light source control unit that drives the CW light source 20 based on a trigger signal and adjusts the excitation state of the hybrid optical amplifier 30. 60 are further provided. The pulsed laser light and the CW light output from the seed light source 10 are arranged so that their optical paths are aligned via a multiplexer. Even if the CW light enters the wavelength conversion section 40, the wavelength-converted light is not output because the peak power is low.

The CW light source control unit 60 is configured by a circuit block such as an FPGA (Field Programmable Gate Array), monitors the cycle of the detected trigger signal, counts the elapsed time from the input of the trigger signal, and detects the next trigger signal. The CW light source is driven for a predetermined time so that the pumping state of the hybrid optical amplifier 30 is maintained at a predetermined value when amplifying the pulsed laser light generated by the seed light source 10 at the input of .

For example, when the cycle of the trigger signal is long, when the seed light source 10 outputs pulsed laser light in a state where each optical amplifier constituting the hybrid optical amplifier 30 is in an abnormally high excitation state, the hybrid optical amplifier 30 A pulsed laser beam having an abnormally high peak power is generated, and not only the intensity of the laser electron beam becomes unstable, but also the optical amplifier 30 and the wavelength conversion unit 40 may be damaged. Even in such a case, the CW light source control unit 60 drives the CW light source based on the generation of the trigger signal, thereby adjusting the excitation state of the hybrid optical amplifier 30 and stabilizing the intensity of the laser electron light beam. Damage to the optical amplifier and wavelength conversion section can be avoided.

In the light source unit 1 described above, the pulsed light with a wavelength of 1064 nm is wavelength-converted by the wavelength conversion unit 40 into a wavelength of 532 nm by the LBO crystal (LiB ₃ O ₅ ), and the deep ultraviolet light with a wavelength of 266 nm is converted by the CLBO crystal (CsLiB ₆ O ₁₀ ). Although an example in which wavelength conversion is performed has been described, the value of the wavelength to be converted is not particularly limited, and the nonlinear optical element to be used is not particularly limited either. Alternatively, the light source unit 1 may not include the wavelength conversion unit 40 and the pulsed laser light output from the seed light source 10 may be output to the laser electron beam generator 3 while maintaining the wavelength thereof.

As described above, a high-intensity laser electron beam can be obtained by amplifying and then colliding pulsed laser light generated by the gain switching method. Furthermore, the energy of the laser electron beam can be increased by colliding the pulsed laser beam after the wavelength is converted by the wavelength conversion unit. Alternatively, the energy of the electron beam can be lowered without lowering the energy of the laser electron beam. As a result, the size of the electron beam generator can be reduced.

By adjusting the pulse width (time width) of the pulsed laser beam to be equal to or less than the time width of the pulsed electron beam, the brightness of the laser electron beam can be increased. In addition, it is possible to suppress the spread of electron bunches and generate laser electron beams from a small area.

As explained in [Equation 2] above, when the number ne of electrons increases, the repulsive force within the bunch increases, the electron bunch expands, and the generation area of the photoelectron beam expands, causing a decrease in luminance. Therefore, in order to increase the amount of light while maintaining the brightness, it is necessary to increase the repetition frequency f. By using this laser light source device, high-frequency collisions, for example, up to 6×10 ⁹ times per second can be realized, so the number of electrons per bunch can be reduced.

High-precision synchronization with the pulsed electron beam can be realized by using the pulsed laser beam generated by the gain switching method as the collision laser. Therefore, the pulsed laser beam can be caused to collide with the pulsed electron beam passing through the action area (collision portion) reliably and at the optimum location, and can be stably generated without waste.

Since the trigger signal generator 50 operates based on the synchronization signal input from the outside, it is possible to electrically adjust the timing of the collision. In particular, the electrical delay adjustment can be realized simply, compactly, stably, and inexpensively compared with the optical delay adjustment mechanism.

Furthermore, it is possible to cause the pulsed laser light to collide with all the pulsed electron beams passing through the active region, and the generation efficiency of the laser electron light beam can be improved as a whole device. For example, the number of times a pulsed electron beam passes through the active region is 1×10 ⁸ to 5×10 ⁸ times per second, whereas the pulsed laser light emitted by a conventional Q-switched laser emits a low number of times. Therefore, it was not possible to cause all the pulsed electron beams to collide with each other, and efficient generation was not possible. However, by using the laser light source device of the present invention, the number of times of light emission per second can be matched with that of the pulsed electron beam. be able to.

The multiple embodiments described above are all descriptions of one embodiment of the present invention, and the scope of the present invention is not limited by the description. It goes without saying that the specific circuit configuration of each part and the optical elements used in the circuits can be appropriately selected or changed in design within the range in which the effects of the present invention can be achieved.

1: Laser light source device 2: Electron beam generator 3: Laser electron beam generator 4: Pulsed electron beam controller 5: Trigger signal generator 6: Pulsed laser light introduction unit 10: Seed light source 20: CW light source 30: Hybrid light Amplifier 40: Wavelength converter 50: Trigger signal generator 60: CW light source controller 100: Laser electron beam generator

Claims (8)

a light source unit including a seed light source for generating pulsed laser light by a gain switching method;
an electron beam generator that generates a pulsed electron beam;
a laser electron beam generator for generating laser electron beams by inverse Compton scattering by causing the pulsed electron beam generated by the electron beam generator and the pulsed laser beam generated by the light source to collide;
a trigger signal generation unit for generating a trigger signal for adjusting the collision timing with the pulsed electron beam in the laser electron beam generation unit and for driving the seed light source;
A laser electro-optical generator comprising: 2. The light source unit according to claim 1, wherein the light source unit includes a hybrid optical amplifier for amplifying the pulsed laser light output from the seed light source, and a wavelength conversion unit for wavelength-converting the pulsed laser light amplified by the hybrid optical amplifier. Laser electron light generator. 3. A laser electron beam generator according to claim 1, wherein the pulse laser beam output from said seed light source has a pulse width of 0.1 picoseconds to 100 picoseconds. 4. The trigger signal generator according to any one of claims 1 to 3, wherein the trigger signal generator generates the trigger signal so that the collision point between the electron bunch of the pulsed electron beam and the pulsed laser beam is always within the Rayleigh length of the pulsed laser beam. Laser electron light generator. A pulsed electron beam detector for detecting synchronization timing of the pulsed electron beam generated by the electron beam generator,
5. The laser electron beam generator according to claim 1, wherein said trigger signal generator generates said trigger signal based on synchronization timing by said pulse electron beam detector. an intensity detection unit that detects the intensity of the laser electron beam generated by the laser electron beam generation unit;
6. The laser electron beam generator according to claim 1, wherein said trigger signal generator generates said trigger signal based on the intensity of the laser electron beam detected by said intensity detector. A laser light source device used in the laser electron beam generator according to any one of claims 1 to 7,
a seed light source that generates pulsed laser light by a gain switching method based on the trigger signal;
a hybrid optical amplifier that amplifies the pulsed laser light output from the seed light source;
a wavelength conversion unit for wavelength-converting the pulsed laser light amplified by the hybrid optical amplifier;
A laser light source device comprising: a CW light source that generates CW light;
a CW light source controller that drives the CW light source based on the trigger signal to adjust an excitation state of the hybrid optical amplifier;
8. The laser light source device according to claim 7, further comprising:

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