WO1992014288A1 - Pulse laser device - Google Patents
Pulse laser device Download PDFInfo
- Publication number
- WO1992014288A1 WO1992014288A1 PCT/JP1991/000152 JP9100152W WO9214288A1 WO 1992014288 A1 WO1992014288 A1 WO 1992014288A1 JP 9100152 W JP9100152 W JP 9100152W WO 9214288 A1 WO9214288 A1 WO 9214288A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- capacitor
- pulse
- voltage
- main discharge
- diode
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/097—Processes or apparatus for excitation, e.g. pumping by gas discharge of a gas laser
- H01S3/0971—Processes or apparatus for excitation, e.g. pumping by gas discharge of a gas laser transversely excited
Definitions
- the present invention relates to a pulse laser device.
- Fig. 1 shows the excitation circuit of the conventional excimer laser shown on page 5 of, for example, IEEJ Technical Report No. 217 (Current status of short wavelength laser).
- (1) and (2) denote a pair of opposing main discharge electrodes
- ( 3 ) a biking capacitor mounted in parallel with the main discharge electrodes (1) and (2)
- ( 4 ) is a pulse generation capacitor and one terminal is connected to the main discharge electrode (1).
- ( 5 ) is the other end of the pulse generation capacitor ( 4 ).
- ⁇ ( 6 ) consisting of thyratron is a charging reactor, and (7) is a charging reactor. Terminal.
- Fig. 3 shows another example of the conventional pulse laser excitation circuit.
- the pulse generation capacitor (4) is charged. It is transferred to the picking capacitor (3) through the saturation reactor (8).
- another bus generation module is needed. It is equipped with a capacitor (9) and a reactor for current suppression (10) .
- the operating waveform of this circuit is shown in Fig. 4.
- the discharge started at t-ti at the main discharge electrodes (1) and (2) the current oscillates, Finally, a pulse is generated.
- a voltage Vr having a polarity opposite to that of the initial stage is generated at the rain end of the capacitor (4).
- This invention has been made to solve the problems described above, so that the electrode life can be extended and high repetition oscillation can be achieved.
- the aim is to get a pulse laser excitation circuit.
- the pulse laser excitation circuit relating to this invention conducts in the direction opposite to the applied voltage in parallel with the pulse generation capacitor.
- the diode is arranged like this, and this diode generates the reverse voltage generated in the pulse generating capacitor. Conducts to prevent the application of a reverse polarity voltage to the pulse generating capacitor.
- FIG. 1 is a configuration diagram of a conventional pulse laser device
- FIG. 2 is a voltage waveform diagram showing the operation of FIG. 1
- FIG. 3 is another conventional pulse laser device.
- FIG. 4 is a configuration diagram of the laser device
- FIG. 4 is a voltage waveform diagram showing the operation of FIG. 3
- FIG. 5 is a pulse lane showing an embodiment of the present invention.
- FIG. 6 shows a voltage waveform diagram showing the operation of FIG. 5, and FIGS. 7 to 9 show another embodiment of the present invention. It is a diagram. Best form to carry out the invention
- Fig. 5 (ID is a diode, 02) is a resistor, and a series body of a diode 01) and a resistor 02) generates a pulse and a capacitor ( It is connected in parallel with 4).
- the direction of the diode cm is connected to the non-conductive state with respect to the polarity of the charge from the charging terminal m.
- ⁇ 3 is a saturable reactor connected to the switch (5) consisting of a pulse generation capacitor (4) and a switch (5) composed of a silatron force. It is a switch composed of tolls.
- the capacitor for pulse generation (4) and the switch are connected in series with the main discharge electrodes (1) and (2) in parallel.
- the switch is composed of a series of silatron (5) and a supersaturated reactor.
- the diode (11) is relatively long within the saturable reactor block and within a relatively long time (for example, 200 ns). Since it is sufficient to flow a reverse charge through the resistor 02), the response speed of the diode m) may be slow and the peak current is small. You can. Therefore, it can be used even with inexpensive diodes.
- FIG. 7 shows an example in which a high-speed, large-current diode is used.
- the saturable reactor would have the same effect as the above example without using it, as opposed to the conventional example shown in Fig. 3.
- FIG. 8 shows an embodiment of the present invention.
- the main discharge electrode (hi, (2) a switch composed of a saturable reactor (8) in parallel with the urugi and a capacitor for pulse generation (4) ), And in parallel with this pulse generator (4), a series of diodes (ID and resistor 02) Is connected.
- Another pulse generation ⁇ The electric charge charged in the capacitor (9) is transferred to the capacitor (9) by the switch (5).
- the polarity of the charged voltage of the pulse generating capacitor (4) at the beginning is as follows. Diode ⁇ > is connected in the direction of non-conduction. In this case, the same effect as in the above embodiment can be obtained.
- the laser was described as an excimer laser in the embodiment, the discharge resistance is small and the oscillation of the discharge current is small. Any pulse laser can be implemented as long as it is a laser, and the same effect as in the above embodiment can be achieved.
- the same effect is obtained even if the charging reactor (6) is another charging circuit element such as a resistor. Can be expected.
- the reverse voltage energy generated in the pulse generator / capacitor is transferred to the pulse generator. Consumed through a diode connected in parallel with the capacitor, so that arcs and streamers do not occur at the main discharge pole. Therefore, the life of the main discharge electrode is prolonged, and a pulse laser capable of high-repetition oscillation is obtained.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
- Generation Of Surge Voltage And Current (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP91903289A EP0526635B1 (en) | 1991-02-08 | 1991-02-08 | Pulse laser device |
KR1019910701050A KR950000118B1 (en) | 1991-02-08 | 1991-02-08 | Pulse laser apparatus |
CA002060896A CA2060896C (en) | 1991-02-08 | 1991-02-08 | Pulse laser apparatus |
US07/793,430 US5305339A (en) | 1991-02-08 | 1991-02-08 | Pulse laser apparatus |
DE69111061T DE69111061T2 (en) | 1991-02-08 | 1991-02-08 | PULSE LASER DEVICE. |
PCT/JP1991/000152 WO1992014288A1 (en) | 1991-02-08 | 1991-02-08 | Pulse laser device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002060896A CA2060896C (en) | 1991-02-08 | 1991-02-08 | Pulse laser apparatus |
PCT/JP1991/000152 WO1992014288A1 (en) | 1991-02-08 | 1991-02-08 | Pulse laser device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1992014288A1 true WO1992014288A1 (en) | 1992-08-20 |
Family
ID=25674957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1991/000152 WO1992014288A1 (en) | 1991-02-08 | 1991-02-08 | Pulse laser device |
Country Status (2)
Country | Link |
---|---|
KR (1) | KR950000118B1 (en) |
WO (1) | WO1992014288A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4415387Y1 (en) * | 1965-06-05 | 1969-07-03 | ||
JPS5714581B2 (en) * | 1978-08-31 | 1982-03-25 | ||
JPS5996788A (en) * | 1982-11-02 | 1984-06-04 | シーメンス、アクチエンゲゼルシヤフト | High voltage pulse discharge exciter |
JPS61240690A (en) * | 1985-04-18 | 1986-10-25 | Toshiba Corp | Gas laser oscillator |
JPS63299288A (en) * | 1987-05-29 | 1988-12-06 | Shibuya Kogyo Co Ltd | Pulsed gas laser device |
-
1991
- 1991-02-08 WO PCT/JP1991/000152 patent/WO1992014288A1/en active IP Right Grant
- 1991-02-08 KR KR1019910701050A patent/KR950000118B1/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4415387Y1 (en) * | 1965-06-05 | 1969-07-03 | ||
JPS5714581B2 (en) * | 1978-08-31 | 1982-03-25 | ||
JPS5996788A (en) * | 1982-11-02 | 1984-06-04 | シーメンス、アクチエンゲゼルシヤフト | High voltage pulse discharge exciter |
JPS61240690A (en) * | 1985-04-18 | 1986-10-25 | Toshiba Corp | Gas laser oscillator |
JPS63299288A (en) * | 1987-05-29 | 1988-12-06 | Shibuya Kogyo Co Ltd | Pulsed gas laser device |
Non-Patent Citations (1)
Title |
---|
See also references of EP0526635A4 * |
Also Published As
Publication number | Publication date |
---|---|
KR950000118B1 (en) | 1995-01-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2426819B1 (en) | Sawtooth oscillator having controlled endpoints and methodology therefor | |
EP0526635B1 (en) | Pulse laser device | |
KR930008356B1 (en) | Discharge exciting pulse laser apparatus | |
EP0219504A1 (en) | Circuit arrangement for generating high voltage pulses. | |
WO1992014288A1 (en) | Pulse laser device | |
JP3201809B2 (en) | Pulse laser equipment | |
WO1990005613A1 (en) | Spot welder | |
JP2771028B2 (en) | Pulse laser equipment | |
JPH01268451A (en) | Overvoltage suppressing circuit for semiconductor device | |
JP2722704B2 (en) | Pulse laser equipment | |
JP2647501B2 (en) | Pulse generator | |
SU1453582A1 (en) | Quartz oscillator | |
JP2571915B2 (en) | Ignition device | |
RU2115214C1 (en) | Pulse power supply for electrical apparatuses with corona- forming discharge electrodes | |
SU868914A1 (en) | Overload-protected voltage converter | |
JPS60180721A (en) | Discharge machining power supply | |
SU1465942A1 (en) | Current pulse generator | |
SU1226613A1 (en) | One-shot multivibrator | |
SU871315A1 (en) | Square pulse generator | |
SU1465962A2 (en) | Pulse shaper | |
SU1231589A1 (en) | Sawtooth voltage generator | |
SU930603A1 (en) | Square-wave pulse generator | |
JPH0332091Y2 (en) | ||
SU782132A1 (en) | Device for shaping control pulses for thyristor | |
JP2571914B2 (en) | Ignition device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 2060896 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1991903289 Country of ref document: EP |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CA KR US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LU NL SE |
|
WWP | Wipo information: published in national office |
Ref document number: 1991903289 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1991903289 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref country code: CA Ref document number: 2060896 Kind code of ref document: A Format of ref document f/p: F |