JPH11274665A - Color element laser oscillation method/device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set output to be high and to set repetition to be high. SOLUTION: CVL light which is obtained by synthesizing respective CVL (copper vapor laser) light beams and whose repetition number is mf is made incident on a color element laser oscillator 20 as exciting light. Respective CVL light beams whose repetition number is (f) are made incident on respective color element laser amplifiers 22-1 to 22-m and they are excited. Color element laser light beams outputted from the color element laser oscillator 20 are amplified in multiple stages by the respective color element laser amplifiers 22-1 to 22-m. The color element laser light beams are synthesized and a color element laser light beam whose repetition number is mf is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a highly repetitive dye laser oscillation device.

[0002]

2. Description of the Related Art To increase the repetition rate of a dye laser oscillation device, the following two methods are mainly employed. FIG. 4 shows a configuration diagram of a high repetition dye laser oscillation device according to the first method.

A dye laser amplifier 2 is arranged on the optical path of dye laser light output from a dye laser oscillator (OSC) 1. The dye laser amplifier 2 has a plurality of amplifiers {AMP (1) to (m)} arranged in a multistage amplifier.

A plurality of copper vapor laser (hereinafter, referred to as CVL) devices 3-1 are used for exciting the dye laser oscillator 1.
３−3-m are arranged. These CVL devices 3-1 to 3-1
Each mirror 4 of the combining optical system is arranged on each output optical path of 3-m.

The operation of these CVL devices 3-1 to 3-m is controlled by a timing control device 5, and outputs CVL light at the same repetition rate f (Hz). In this case, the timing control device 5 sets the delay time t2 to tm of each of the other CVL devices 3-2 to 3-m with respect to the CVL device 3-1 as follows: t2 = (n2 -1) / mf to tm = ( nm -1) /
The oscillation is controlled by setting mf.

Note that n1 to nm are the respective CVL devices 3-1 to 3-1.
Each number of 3-m, m is the total number of CVL devices. As a result, when each CVL light is output from each of the CVL devices 3-1 to 3-m, these CVL lights are combined by each mirror 4 and incident on the dye laser oscillator 1 as CVL light having a repetition number of mf (Hz). I do.

At the same time, the CVL light having a repetition number mf is
The light is distributed by the mirrors 6 of the pumping light guiding optical system and enters the respective amplifiers {AMP (1) to (m)} of the dye laser amplifier 2. Accordingly, the dye laser oscillator 1 is excited by each CVL light and outputs dye laser light having a repetition number mf.
Then, this dye laser light is transmitted to the next dye laser amplifier 2.
Are amplified in multiple stages and output as dye laser light having a high repetition rate mf.

Next, FIG. 5 shows a configuration diagram of a high repetition dye laser oscillation device according to the second system. A plurality of dye laser lines each including a plurality of dye laser oscillators (OSCs) 10-1 to 10-m and a plurality of dye laser amplifiers 11-1 to 11-m are arranged.

The dye laser amplifiers 11-1 to 11-11
m is a multi-stage amplifier in which a plurality of amplifiers {AMP (1) to (m)} are arranged in the same manner as described above. Also, a plurality of Cs are used for exciting the dye laser oscillators 10-1 to 10-m.
VL devices 12-1 to 12-m, and these CVL devices 1
The respective mirrors 13, 14, 15 of the respective excitation light guiding optical systems are arranged corresponding to 2-1 to 12-m.

The combination of the CVL device and the excitation light guiding optical system is called one chain. These CVL devices 1
The operation of 2-1 to 12-m is controlled by the timing control device 16, and outputs CVL light at the same repetition rate f (Hz).

In this case, the timing control device 16
The other CVL devices 12-2 to 12-1 with respect to the VL device 12-1
The 2-m delay time t2 to tm is calculated as follows: t2 = (n2 -1) / mf to tm = (nm-1) /
The oscillation is controlled by setting mf.

As a result, each of the CVL devices 12-1 to 12-12
When the respective CVL lights are output from −m, these CVL lights are incident on the respective dye laser oscillators 10-1 to 10 -m, and are also distributed by the respective mirrors 13, 14, and 15, and the respective CVL lights are output from the respective dye laser amplifiers 2. The light enters the amplifiers {AMP (1) to (m)}.

Accordingly, each of the dye laser oscillators 10-1 to 10-1
When each of the dye laser lights is output from 0-m1, these dye laser lights are amplified in multiple stages in the dye laser amplifier 2, and thereafter, each mirror 17
And output as dye laser light having a high repetition rate mf.

The dye laser oscillator irradiates the dye solution filled in the dye flow cell with excitation light such as CVL to obtain laser oscillation. At this time, it is necessary that the dye solution in the irradiation range (excitation volume) of the CVL heated by one pulse laser beam flows too much before the next pulse laser beam reaches.

The above-mentioned first method uses a high-output dye laser.
In order to increase the repetition rate, the dye laser oscillator 1 and the dye laser amplifier 2 are connected to the same CVL having the same high repetition rate mf.
Although the dye solution is excited by light, the dye solution is heated by the increase in the number of times of the excitation, and the output decreases and the wavefront is distorted due to the thermal lens effect.

In order to prevent this, it is necessary to increase the flow rate of the dye solution circulation device and increase the circulation flow rate of the dye solution. Also, in the first and second stages of the dye laser oscillator 1 and the dye laser amplifier 2 having a small output, the excitation volume for the dye flow cell is relatively narrow, that is, the excitation light amount is small, so that the excitation density is the same as that of the subsequent dye flow cell. When set to, the irradiation area becomes smaller.

Therefore, at a repetition rate of about 5 kHz, the flow rate of the dye solution is only several l / min, and even when the repetition rate is increased about five times, the circulation flow rate is about several tens l / min.

However, in the latter-stage amplifier where the output of the dye laser amplifier 2 increases, a flow rate of one hundred and several tens l / min is required at a repetition rate of about 5 kHz.
Even when the repetition rate is increased about 5 times, 1000 l / mi
A circulating flow rate close to n is required, and a large-sized circulating apparatus that requires a large burden both economically and spatially is required.

On the other hand, in the second method, a plurality of dye lasers whose oscillation timings are shifted are synthesized to increase the repetition. Therefore, the number of repetitions per chain is small, and the flow rate of the circulator is increased, and the CVL is repetitively increased. There is no need for conversion.

However, high-precision control of the oscillation frequency by the timing controller 16 is required, and the dye laser oscillators 12-1 to 12-1 having the highest added value in terms of physical quantity and the like are required.
2-m is required for each chain, and the oscillation timing of these dye laser oscillators 12-1 to 12-m is adjusted.
In addition, the burden increases in performing operations such as maintenance.

[0021]

As described above, in the first method, when the repetition rate is increased, a large amount of the dye solution needs to be circulated in the amplifier on the downstream side of the dye laser amplifier 2. In the second method, the dye laser oscillator 12-
High-precision control is required for the oscillation timing of 1 to 12-m. Accordingly, an object of the present invention is to provide a dye laser oscillation method and an apparatus thereof that can achieve high output and high repetition.

[0022]

According to a first aspect of the present invention, a dye laser beam output from a dye laser oscillator is distributed to a plurality of dye laser amplification lines, and each of the dye lasers amplified by the dye laser amplification lines. In the dye laser oscillation method of combining and outputting light, the repetition frequency of the dye laser oscillator is set to a desired high repetition number, and each amplification operation timing of each dye laser amplification line is set to the high repetition number of the dye laser oscillator. This is a dye laser oscillation method that achieves the above object by making the number of repetitions divided by the number of dye laser amplification lines coincide with each other.

With such a configuration, when the dye laser light output from the dye laser oscillator is distributed to a plurality of dye laser amplification lines and amplified, and the amplified dye laser lights are combined and output, The repetition frequency of the dye laser oscillator is set to the product of the repetition frequency of a plurality of dye laser amplification lines and the number of the lines, and each amplification operation timing of each dye laser amplification line is distributed to each dye laser amplification line. By matching the frequency of the dye laser light, high output and high repetition can be achieved.

According to the second aspect, the repetition frequency of the dye laser oscillator is set to the product of the number of repetitions of the dye laser amplification line and the number of dye laser amplification lines. With such a configuration, the repetition frequency of the dye laser
The operation is performed by setting the product of the number of repetitions of the dye laser amplification line and the number of dye laser amplification lines.

According to the third aspect, the dye laser light output from the dye laser oscillator is distributed to a plurality of dye laser amplification lines, and the dye laser lights amplified by the dye laser amplification lines are combined and output. In the dye laser oscillation apparatus, the timing at which the dye laser oscillator is oscillated at a desired high repetition rate, and each dye laser amplification line coincides with the number of repetitions obtained by dividing the repetition rate of the dye laser oscillator by the number of dye laser amplification lines. A dye laser oscillation device that achieves the above object by providing excitation timing control means for performing an amplifying operation in the above.

With such a configuration, when the dye laser light output from the dye laser oscillator is distributed to a plurality of dye laser amplification lines and amplified, and the amplified dye laser lights are combined and output, By providing the excitation timing control means, the repetition frequency of the dye laser oscillator is set to the product of the repetition frequency of a plurality of dye laser amplification lines and the number of the lines, and each amplification operation timing of each dye laser amplification line, The frequency is matched with the frequency of each dye laser beam distributed to each dye laser amplification line.

According to the fourth aspect, the excitation timing control means sets the number of repetitions of the dye laser oscillator to the product of the number of repetitions of the dye laser amplification line and the number of dye laser amplification lines.

With such a configuration, the operation is performed by setting the number of repetitions of the dye laser oscillator to the product of the number of repetitions of the dye laser amplification line and the number of dye laser amplification lines by the excitation timing control means.

According to the fifth aspect, the excitation timing control means includes a plurality of first excitation laser devices for the dye laser oscillator, and each excitation laser beam output from the first excitation laser device. A combining optical system for combining and entering the dye laser oscillator, a plurality of second excitation laser devices arranged for each dye laser amplification line, and respective excitation lasers output from these second excitation laser devices A plurality of excitation light guiding optical systems for guiding light to the corresponding dye laser amplification lines, and the number of repetitions when the respective excitation laser lights output from the respective first excitation laser devices are combined is a repetition rate of the dye laser oscillator. Each first at the timing that matches the number
Timing control means for controlling the operation of the excitation laser device, and controlling the operation of each second excitation laser device with the number of repetitions of the dye laser oscillator divided by the number of lines of each dye laser amplification line. Become.

With such a configuration, the excitation timing control means combines the respective excitation laser beams output from the plurality of first excitation laser devices and, when the laser beams are incident on the dye laser oscillator, these excitation lasers are controlled. The operation of each first excitation laser device is controlled so that the frequency at which the light is combined coincides with the number of repetitions of the dye laser oscillator, and each of the plurality of second excitation laser devices output When the excitation laser light is guided to each of the corresponding dye laser amplification lines, the number of repetitions of the dye laser oscillator is set at the second frequency at a frequency divided by the number of dye laser amplification lines.
The operation of the excitation laser device is controlled.

According to claim 6, the excitation timing control means corresponds to a plurality of excitation laser devices arranged for each dye laser amplification line and each excitation laser beam output from these excitation laser devices. A plurality of pumping light guiding optical systems leading to each dye laser amplification line, a combining optical system that combines each pumping laser beam output from each pumping laser device and enters the dye laser oscillator, and a repetition of the dye laser oscillator Timing control means for controlling the operation of each excitation laser device with the number of repetitions obtained by dividing the number by the number of dye laser amplification lines.

With such a configuration, the excitation timing control means controls the plurality of excitation laser devices arranged for each dye laser amplification line by changing the number of repetitions of the dye laser oscillator to the number of lines of each dye laser amplification line. The operation is controlled by the number of repetitions divided by, and the respective excitation laser lights outputted are guided to corresponding dye laser amplification lines, respectively, and the respective excitation laser lights are combined therewith and incident on the dye laser oscillator.

According to the seventh aspect, the first-stage amplifier is disposed downstream of the dye laser oscillator, and the dye laser light amplified by the amplifier is distributed to each dye laser amplification line. With such a configuration, the dye laser light output from the dye laser oscillator is amplified by the first-stage amplifier arranged on the subsequent stage side, and the amplified dye laser light is distributed to each dye laser amplification line. .

[0034]

(1) Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram of a dye laser oscillation device. Dye laser oscillator (OS
C) Each mirror 21 of the distribution optical system is arranged on the optical path of the dye laser light output from 20.
Thereby, the dye laser light is distributed to a plurality of optical paths.

On the distribution optical path by these mirrors 21,
Dye laser amplifiers 22-1 to 22-m are arranged respectively. These dye laser amplifiers 22-1 to 22-m
Is a multistage amplifier in which a plurality of amplifiers {AMP (1) to (m)} are arranged.

These dye laser amplifiers 22-1 to 22-
On the output side of m, each mirror 23 of the dye laser combining optical system is arranged. On the other hand, the dye laser oscillator 2
A plurality of excitation CVL devices 24-1 to 24-2 for zero excitation
4-m are arranged.

These excitation CVL devices 24-1 to 24-
m, each mirror 2 of the CVL combining optical system
5 are arranged, and each of the excitation CVL devices 24-1 to 24-m
Are combined and guided to the dye laser oscillator 20 as excitation light.

Each of the dye laser amplifiers 22-1 to 22-
m Exciting CVL devices 26-1 and 26-2
6-m, and these CVL devices for excitation 26-1 to 26-
m, each mirror 27, 2 of each excitation light guiding optical system
8, 29 are arranged.

The excitation CVL devices 26-1 to 26-1
The combination of 26-m and each excitation light guiding optical system is referred to as one chain. The timing control device 27 controls each CVL output from each of the excitation CVL devices 24-1 to 24-m.
The number of repetitions when the light is combined is determined by the dye laser oscillator 2
The first control function for controlling the operation of each of the excitation CVL devices 24-1 to 24-m at a timing coincident with the repetition number mf (Hz) of 0, the repetition number mf of the dye laser oscillator 20
To each dye laser amplification line, that is, each chain n1-
CV for each excitation with repetition number f divided by nm line number m
A second control function for controlling the operation of the L devices 26-1 to 26-m.

The first control function of the timing control device 27 is to control the delay time t of each of the other excitation CVL devices 24-2 to 24-m with respect to the excitation CVL device 24-1.
2 to tm, t2 = (n2 -1) / mf to tm = (nm-1) /
It has a function of controlling oscillation by setting it to mf.

Note that n1 to nm are the respective CVL devices 2 for excitation.
Each number of 4-1 to 24-m, and m is the total number of excitation CVL devices. The second control function of the timing control device 27 is the same as that of the first control function.
-1 for each of the other excitation CVL devices 26-2 to 26-
m, the delay times t2 to tm are calculated as follows: t2 = (n2 -1) / mf to tm = (nm-1) /
It has a function of controlling oscillation by setting it to mf.

Next, the operation of the device configured as described above will be described. When the operation of each of the excitation CVL devices 24-1 to 23-m is controlled by the timing control device 27, these excitation CVL devices 24-1 to 23-m are respectively provided to the excitation CVL device 23-1. Delay time t
Each CVL light is output at 2 to tm.

That is, these excitation CVL devices 24-
Each of 1 to 23-m outputs the CVL light of the repetition number f. These CVL lights are combined by the respective mirrors 25 and are incident on the dye laser oscillator 20 as excitation CVL lights having a repetition number mf multiplied by m.

At the same time, when the operation of each of the excitation CVL devices 26-1 to 26-m is controlled by the timing control device 27, these excitation CVL devices 26-1 to 26-m
Each CVL light is output to the excitation CVL device 26-1 with each delay time t2 to tm.

Thus, each excitation CVL device 26-1
26-m output the CVL light of the repetition number f with the delay times t2 to tm, respectively. Therefore,
The dye laser oscillator 20 is excited by each CVL light and outputs dye laser light having a repetition number mf.

This dye laser beam is distributed by each mirror 21 of the distribution optical system, and each of the dye laser amplifiers 22-1 to 22-1.
22-m. These dye laser amplifiers 22-1
22-m, the dye laser amplifier 22-1 is excited by the CVL light of the repetition number f from the excitation CVL device 26-1 and amplifies the dye laser light in multiple stages.

At the same time, each dye laser amplifier 22-2
22-m is excited by each CVL light of the repetition number f from the excitation CVL devices 26-2 to 26-m,
Each dye laser beam is multi-stage amplified at a timing having a difference between the respective delay times t2 to tm with respect to the excitation timing of the dye laser amplifier 22-1.

As a result, these dye laser amplifiers 22-
Each dye laser light multi-stage amplified by 1 to 22-m is
Synthesized by each mirror 23 of the dye laser synthesis optical system,
A dye laser beam having a final repetition number mf is output.

As described above, in the first embodiment, the CVL light having the repetition number mf obtained by synthesizing the CVL lights is incident on the dye laser oscillator 20 as the excitation light, and the CVL light having the repetition number f is converted into the respective CVL lights. Dye laser amplifier 22-1
22-m to be excited.
Each dye laser light multi-stage amplified by 2-1 to 22-m was synthesized to obtain a dye laser light having a final repetition number mf.

Since the dye laser oscillator 20 is excited by the high repetition rate mf, it is necessary to increase the flow rate of the dye solution circulation device in order to prevent the thermal lens effect of the dye flow cell in the dye laser oscillator 20. Although it is considered that the dye laser oscillator 20 has a small output, the excitation volume for the dye flow cell is relatively narrow, that is, the irradiation area is small when it is set to the same excitation density as the subsequent dye flow cell because the amount of excitation light is small. Therefore, at a repetition rate of about 5 kHz, the flow rate of the dye solution is several l / min, and even when the repetition rate is increased about five times, the circulation flow rate is about several tens l / min.

Therefore, it is sufficient to use the circulating device used in the dye laser amplifiers 22-1 to 22-m for the dye laser oscillator 20 when the repetition rate is about 5 kHz, and the burden on this is small.

In addition, each of the dye laser amplifiers 22-1 to 22-1
Since it is not necessary to operate 22-m at a high repetition rate,
There is no need to increase the flow rate of the dye solution circulation device. or,
The dye laser light from one dye laser oscillator 20 that has been subjected to high repetition is supplied to each dye laser amplifier 22-1 to 22-m.
, Without increasing the number of the most invaluable dye laser oscillators 20 in terms of control, adjustment, physical quantity, etc.
As a dye laser oscillation device, high output and high repetition operation can be performed at low cost without burden on economy and space. (2) Next, a second embodiment of the present invention will be described.
The same parts as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 2 is a configuration diagram of a dye laser oscillation device. On the optical path of each CVL light output from each of the excitation CVL devices 26-1 to 26-m, beam splitters 30-1 to 30-m constituting a distributing / combining optical system are arranged. Splitters 30-1 to 30
The mirrors 31, 32, and 33 are arranged on one branch optical path of -m.

The mirrors 31, 32, and 33 are provided for each of the CVs split by the beam splitters 30-1 to 30-m.
L light is synthesized and guided to the dye laser oscillator 20 as excitation light.

With such a configuration, when the operation of each of the excitation CVL devices 26-1 to 26-m is controlled by the timing control device 27, these excitation CVL devices 26-1 to 26-2 are controlled.
6-m outputs each CVL light with each delay time t2 to tm to the excitation CVL device 26-1.

That is, each of the excitation CVL devices 26-1 to 26-1
26-m outputs the CVL light of the repetition number f with the delay times t2 to tm. These CVs
The L light is applied to each of the mirrors 27 to 2 of the excitation light guiding optical system.
9, the light is guided to each of the dye laser amplifiers 22-1 to 22-m.

At the same time, each of the CVL lights is partially branched by each of the beam splitters 30-1 to 30-m, and is guided to the dye laser oscillator 20 via each of the mirrors 31 to 33.

Accordingly, the dye laser oscillator 20 is excited by the CVL light having the repetition number mf and outputs the dye laser light having the repetition number mf. This dye laser light is distributed by each mirror 21 of the distribution optical system and enters each of the dye laser amplifiers 22-1 to 22-m.

These dye laser amplifiers 22-1 to 22-
Of m, the dye laser amplifier 22-1 is excited by the CVL light of the repetition number f from the excitation CVL device 26-1, and amplifies the dye laser light in multiple stages.

At the same time, each dye laser amplifier 22-2
22-m is excited by each CVL light of the repetition number f from the excitation CVL devices 26-2 to 26-m,
Each dye laser beam is multi-stage amplified at a timing having a difference between the respective delay times t2 to tm with respect to the excitation timing of the dye laser amplifier 22-1.

As a result, these dye laser amplifiers 22-
Each dye laser light multi-stage amplified by 1 to 22-m is
Synthesized by each mirror 23 of the dye laser synthesis optical system,
A dye laser beam having a final repetition number mf is output.

As described above, in the second embodiment, a part of each CVL light output from each of the pumping CVL devices 26-1 to 26-m is branched and combined, and this is used as pumping light. Since it was led to the dye laser oscillation device 20,
Needless to say, the same effects as those of the first embodiment can be obtained. In this case, there is no need to prepare a dedicated excitation CVL device for exciting the dye laser oscillation device 20.
(3) Next, a third embodiment of the present invention will be described.
The same parts as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 3 is a block diagram of a dye laser oscillation device. Between the dye laser oscillator 20 and each mirror 21,
An amplifier (AMP) 40 is provided.

This amplifier 40 is connected to each dye laser amplifier 2.
The amplifiers AMP (1) and (2) of the first and second stages in 2-1 to 22-m are shared and arranged between the dye laser oscillator 20 and each mirror 21.

Thus, each dye laser amplifier 22-1
22-m are configured for multi-stage amplification of the amplifiers AMP (3)-(m). With such a configuration, the dye laser light having the repetition number mf output from the dye laser oscillator 20 is amplified by the amplifier 40, and thereafter, the mirror 2
And each dye laser amplifier 22-1 to 22
-M.

These dye laser amplifiers 22-1 to 22-
m is excited by each of the CVL lights of the repetition number f from the excitation CVL devices 26-2 to 26-m, and the difference between the delay times t2 to tm with respect to the excitation timing of the dye laser amplifier 22-1. The dye laser light is multi-stage amplified at the given timing.

As a result, these dye laser amplifiers 22-
Each dye laser light multi-stage amplified by 1 to 22-m is
Synthesized by each mirror 23 of the dye laser synthesis optical system,
A dye laser beam having a final repetition number mf is output.

As described above, in the third embodiment, the first and second stages of the dye laser amplifiers 22-1 to 22-m are provided between the dye laser oscillator 20 and each mirror 21. Amplifier 4 with common amplifier AMP (1) (2)
Since 0 is arranged, it is needless to say that the same effect as that of the first embodiment can be obtained, and only one amplifier AMP (1) (2) in the first stage, which is necessary for the number of chains, can be arranged. .

[0069]

As described above in detail, according to the present invention, it is possible to provide a dye laser oscillation method and an apparatus thereof capable of achieving high output and high repetition.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a first embodiment of a dye laser oscillation device according to the present invention.

FIG. 2 is a configuration diagram showing a second embodiment of the dye laser oscillation device according to the present invention.

FIG. 3 is a configuration diagram showing a third embodiment of the dye laser oscillation device according to the present invention.

FIG. 4 is a configuration diagram of a conventional high-repetition rate dye laser oscillation device of a first system.

FIG. 5 is a configuration diagram of a second conventional high repetition dye laser oscillation device.

[Explanation of symbols]

 Reference Signs List 20: dye laser oscillator, 22-1 to 22-m: dye laser amplifier, 24-1 to 24-m: excitation CVL device, 26-1 to 26-m: excitation CVL device, 27: timing control device, 30-1 to 30-m: beam splitter; 31, 32, 33: mirror; 40: amplifier.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Teruichiro Fukasawa 33, Shinisogo-cho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Inside Toshiba Production Technology Research Institute Co., Ltd. No. 33 Inside Toshiba Production Technology Research Laboratories

Claims (7)

[Claims] 1. A dye laser oscillation method for distributing dye laser light output from a dye laser oscillator to a plurality of dye laser amplification lines, and combining and outputting the dye laser lights amplified by the dye laser amplification lines. In the above, the repetition frequency of the dye laser oscillator is set to a desired high repetition number, and each amplification operation timing of each dye laser amplification line, the high repetition number of the dye laser oscillator is determined by the number of each dye laser amplification line. A dye laser oscillation method characterized by making the number of repetitions coincide with each other. 2. The dye laser oscillation method according to claim 1, wherein the repetition frequency of the dye laser oscillator is set to a product of the number of repetitions of the dye laser amplification line and the number of the dye laser amplification lines. 3. A dye laser oscillating device for distributing dye laser light output from a dye laser oscillator to a plurality of dye laser amplification lines, and synthesizing and outputting each of the dye laser light amplified by the dye laser amplification lines. In the above, the dye laser oscillator is oscillated at a desired high repetition rate, and the respective dye laser amplification lines are at timings corresponding to the number of repetitions obtained by dividing the repetition rate of the dye laser oscillator by the number of dye laser amplification lines. A dye laser oscillation device, comprising: excitation timing control means for performing an amplification operation. 4. The excitation timing control means sets the number of repetitions of the dye laser oscillator to the product of the number of repetitions of the dye laser amplification line and the number of dye laser amplification lines. The dye laser oscillation device as described in the above. 5. The excitation timing control means, comprising: combining a plurality of first excitation laser devices for the dye laser oscillator; and each excitation laser beam output from the first excitation laser device. A synthetic optical system incident on the dye laser oscillator, a plurality of second excitation laser devices arranged for each of the dye laser amplification lines, and respective excitation laser beams output from these second excitation laser devices A plurality of excitation light guiding optical systems for guiding the respective excitation laser beams to the corresponding dye laser amplification lines, and the number of repetitions when the respective excitation laser lights output from the respective first excitation laser devices are combined is the dye laser oscillator. The operation of each of the first excitation laser devices is controlled at a timing corresponding to the number of repetitions of the above, and the number of repetitions of the dye laser oscillator is set to Dye laser oscillating apparatus according to claim 3, characterized in that it consists of a timing control means controlling the operation repeated the number of repeats, separated by in each number of the second excitation laser device. 6. The excitation timing control means includes: a plurality of excitation laser devices arranged for each of the dye laser amplification lines; and a plurality of excitation laser beams output from the excitation laser devices. A plurality of excitation light guiding optical systems for leading to a dye laser amplification line; a synthesis optical system for synthesizing each excitation laser beam output from each of the excitation laser devices and entering the dye laser oscillator; 4. The dye laser oscillation device according to claim 3, further comprising: timing control means for controlling the operation of each of said excitation laser devices with the number of repetitions divided by the number of said dye laser amplification lines. 7. The dye according to claim 3, wherein a first-stage amplifier is disposed at a stage subsequent to the dye laser oscillator, and the dye laser light amplified by the amplifier is distributed to each of the dye laser amplification lines. Laser oscillation device.