WO2006129502A1 - 固体レーザ装置 - Google Patents
固体レーザ装置 Download PDFInfo
- Publication number
- WO2006129502A1 WO2006129502A1 PCT/JP2006/310040 JP2006310040W WO2006129502A1 WO 2006129502 A1 WO2006129502 A1 WO 2006129502A1 JP 2006310040 W JP2006310040 W JP 2006310040W WO 2006129502 A1 WO2006129502 A1 WO 2006129502A1
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- WO
- WIPO (PCT)
- Prior art keywords
- solid
- state laser
- laser device
- laser light
- optical
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
- H01S3/02—Constructional details
- H01S3/025—Constructional details of solid state lasers, e.g. housings or mountings
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- 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
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
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- 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
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
- H01S3/0092—Nonlinear frequency conversion, e.g. second harmonic generation [SHG] or sum- or difference-frequency generation outside the laser cavity
-
- 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
- H01S3/02—Constructional details
- H01S3/025—Constructional details of solid state lasers, e.g. housings or mountings
- H01S3/027—Constructional details of solid state lasers, e.g. housings or mountings comprising a special atmosphere inside the housing
-
- 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
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/07—Construction or shape of active medium consisting of a plurality of parts, e.g. segments
-
- 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
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode
-
- 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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
- H01S3/1123—Q-switching
- H01S3/117—Q-switching using intracavity acousto-optic devices
Definitions
- the present invention relates to high reliability of a solid-state laser device.
- the solid-state laser device has a problem in that the optical components installed in the optical path are contaminated by the mixing of dust from the outside of the optical path, and the transmittance of the laser light is reduced. In addition, there is a problem that dust adhering to the surface of the optical component scatters the laser beam passing through the optical component, thereby reducing the condensing property of the laser beam. In addition, there is a problem in that deposits on the surface of the optical component absorb the laser light, destroy the coating applied to the surface of the optical component, and damage the base material of the optical component.
- Patent Document 1 Japanese Patent Laid-Open No. 5-7043 (paragraphs 0013 to 0017, FIG. 1)
- Patent Document 2 JP-A-8-332586 (paragraph 0028, FIG. 1)
- the container for housing the optical system can be small, and the optical system is arranged. It is possible to seal the container.
- the number of optical elements increases, the optical system becomes larger, and the container for accommodating the optical system becomes larger or more than one, and the optical system is arranged. It was difficult to completely seal the container.
- there are many electrical wiring and cooling pipes necessary for driving and cooling the optical elements and a large number of wiring holes or piping holes are required inside the container. It was practically impossible to completely seal the container containing the optical system.
- the optical system is covered with a substantially sealed cover, the covers are connected by a duct, and the laser is placed in the duct.
- a dustproof structure that allows light to pass through was adopted, a sufficient dustproof effect could not be obtained. Therefore, the method of placing the laser device in an environment where the cleanliness of the external atmosphere is controlled, such as a clean room, and making the influence of dust almost completely sealed is generally used.
- a clean noreme is required, which increases costs, increases the installation area, and limits the installation location.
- the present invention has been made in order to solve an enormous problem, and in a simple, small, and inexpensive configuration, prevents optical components from deteriorating and dew condensation, and stably emits laser light.
- An object of the present invention is to provide a highly reliable solid-state laser device that can be supplied. Means for solving the problem
- the solid-state laser device has a laser light source having a solid-state laser medium and an optical resonator, an optical system that transmits or blocks laser light emitted from the laser light source, and a substantially sealed structure.
- the ambient atmosphere of the optical system that transmits or shields the laser light can always be maintained in a clean state, so that the cleanliness of the external atmosphere such as a clean nolem is managed. Even if it is not placed in the environment, it is possible to prevent deterioration of the optical parts and damage of the optical parts due to the attachment of foreign matter, and to improve the reliability of the solid-state laser device.
- FIG. 1 is a schematic diagram showing a configuration of a solid-state laser apparatus according to Embodiment 1 of the present invention.
- FIG. 2 is a schematic diagram showing a configuration of a solid-state laser apparatus according to Embodiment 2 of the present invention.
- FIG. 3 is a schematic diagram showing a configuration of a solid-state laser apparatus according to Embodiment 3 of the present invention.
- FIG. 4 is a schematic diagram showing a configuration of a solid-state laser apparatus according to Embodiment 4 of the present invention.
- FIG. 1 is a schematic diagram showing the configuration of the solid-state laser apparatus according to Embodiment 1 of the present invention.
- reference numeral 1 denotes an external casing having a substantially sealed structure, which also serves as a protective casing for preventing leakage of laser light and scattered light to the outside.
- substantially sealed structure means a foreign matter intrusion protection class defined in accordance with IEC standard 529, and means a structure having a sealing property equivalent to IP21 to IP56 or that class (the same shall apply hereinafter).
- Reference numeral 2 denotes an internal casing disposed in the external casing 1.
- a dehumidifier that is a dehumidifying means installed on the side wall surface of the external housing 1
- the moisture in the outer casing 1 is discharged out of the outer casing 1.
- 301 and 302 are dotted lines schematically showing the moisture 301 in the outer casing 1 and the moisture 302 released to the outside of the outer casing 1.
- a SP polymer dehumidifier mouth seal manufactured by Ryosai Tech Niki Co., Ltd., which uses a solid polymer electrolyte membrane for the dehumidifier 3 and electrolyzes the moisture 301 in the outer casing 1, is used. ing.
- an air purification unit which is a clean air supply means disposed on the top plate portion of the inner casing 2, and is a pre-filter 40 1 that removes dust having a particle size of several tens to several hundred microns in advance, and an external casing 1 It consists of a fan 402 that introduces the air into the internal housing 2 and a main filter 403 that can remove dust with a particle size of 10 microns or less.
- glass wool is used for the pre-filter 401, and the main filter 403 is capable of collecting 99.97% or more of particles having a particle size of 0.3 micron. (Efficiency Particle Air Filter) filter is used.
- Reference numerals 5a and 5b denote cavity units, and the rod-type solid laser media 501a and 501b and the rod-type solid laser media 501a and 501b are optically excited inside the cavity units 5a and 5b, which are substantially sealed by a cover.
- Semiconductor lasers 502a and 502b which are excitation light sources for this purpose, are provided.
- YAG (yttrium aluminum garnet) crystal doped with Nd (neodymium) as an active medium is used for the rod-type solid state laser media 501a and 501b, and a single cavity is used. Approximately 500W of laser power can be extracted from the units 501a and 501b. Also, force not shown in FIG.
- Reference numeral 6 denotes a TR (Total Reflector) unit, which holds the total reflection mirror 601 and the total reflection mirror 601 inside the substantially sealed cover, and is provided with an angle adjustment mechanism for the total reflection mirror 601.
- a holder 602 is provided.
- 7 is a PR (Partial Reflector) unit.
- a total reflection mirror holder 702 that holds the partial reflection mirror 701 and is provided with an angle adjustment mechanism of the partial reflection mirror 701 is provided.
- the total reflection mirror 601 and the partial reflection mirror 701 constitute an optical resonator, and generate laser light 8 from rod-type solid laser media 501a and 501b optically excited by the semiconductor lasers 502a and 502b.
- Reference numeral 901 denotes a collimating lens disposed in the inner casing 2, which collimates the laser light 8.
- Reference numeral 902 denotes a collimating lens holder which holds the collimating lens 901 and is provided with an adjustment mechanism for the vertical and horizontal directions of the collimating lens 901.
- 10 is a process shirter unit arranged in the inner housing 2. The process shatter mirror 101 is inserted into and retracted from the optical axis of the laser beam 8 by the servo motor 102, so that the laser beam 8 Controls the emission and blocking of.
- 11 is a safety shirter unit installed in the internal housing 2.
- the servo motor 112 is used to retract the safety shirter mirror 111 from the optical axis force of the laser beam 8, and when the laser is stopped, By inserting the shatter mirror 111 into the optical axis of the laser beam 8, the laser beam 8 is reliably prevented from being emitted to the outside.
- Reference numeral 12 denotes a fiber incidence unit.
- the coupling lens 121 holds the coupling lens 121 and the coupling lens 121 inside a substantially sealed cover, and has a mechanism for adjusting the vertical, horizontal, and optical axis directions of the coupling lens 121.
- a holder 122 is provided.
- 13 is an optical fiber that transmits laser light
- 131 is an incident side fiber connector disposed on the laser light incident side of the optical fiber 13
- 132 is an emission side disposed on the laser light emitting side of the optical fiber 13. It is a fiber connector.
- the incident-side fiber connector 131 is firmly fixed to the fiber incident unit 12 by a receptor knob 123 disposed in the fiber incident unit 12.
- the laser beam 8 collimated by the collimator lens 901 is collected by the coupling lens 121 and introduced into the optical fiber 13.
- a gasket 14 made of urethane rubber is used to maintain hermeticity.
- 15a, 15b, 15c, 15d, and 15e are beam ducts provided to prevent leakage of the laser beam 8 and scattered light between the units.
- a silicone rubber O-ring is used to maintain the sealing performance.
- the inner casing 2 is provided in the outer casing 1 having a substantially sealed structure, and the air in the outer casing 1 is cleaned by the air cleaning unit 4 in the inner casing 2.
- the air pressure in the internal housing 2 is higher than the air pressure in the external housing 1, so even if it is not placed in a clean room or other environment where the cleanliness of the external atmosphere is controlled, In addition to preventing the entry of foreign matter such as dust, the atmosphere around the optical components installed in the inner housing 2 can be kept clean. Even when outgas is generated in the internal housing 2, high-power laser light exceeding lkW is installed in the internal housing 2 because it is discharged from the exhaust port 201 together with clean air.
- the PR unit 7 and the fiber incident unit 12 communicate with each other via the beam ducts 15 d and 15 e having a sealed structure, so that the PR unit 7 and the fiber incident unit 12 are also in the PR unit 7 and the fiber incident unit 12. It is always filled with clean air, and the same effect as when placed in the inner housing 2 can be obtained.
- the air in the outer casing 1 having a substantially sealed structure is circulated through the air purification unit 4, the environment in which the amount of dust is not controlled. Even if it is installed, the filter in the air cleaning unit 4 can be prevented from clogging in a short time, and the decrease in productivity and the increase in running cost due to replacement of consumable parts can be suppressed. Also, even when the external housing 1 and the internal housing 2 are opened due to maintenance, etc., the air cleanliness can be restored in a short time, so the downtime required for maintenance can be further reduced. .
- the dehumidifier 3 by providing an opening in the side wall of the outer casing 1 and installing the dehumidifier 3, moisture contained in the air in the outer casing 1 is moved out of the outer casing 1. Since it is configured to discharge, even when installed in an environment where the temperature and humidity are not controlled, the relative humidity in the external housing 1 is always kept below the set value, and condensation of optical components is prevented. In addition to preventing this, it is possible to always supply a stable laser beam regardless of the surrounding environment.
- the laser light source including the cavity units 5a, 5b, the TR unit 6, and the PR unit 7 in the single external housing 1 that also serves as the protective housing, and the laser light source Departure
- An optical system for coupling the laser beam 8 to the optical fiber 13 is provided, and an internal housing 2 is provided in the external housing 1, and the optical system is disposed in the internal housing 2. Therefore, the cleanliness of the air around the optical component can be effectively improved and the life of the optical component can be extended with a simple and compact configuration.
- the optical axis of the laser light source and the optical axis of the optical system do not deviate. This makes it possible to transmit laser light with excellent reliability and to provide a stable laser light.
- FIG. 2 is a schematic diagram showing the configuration of the solid-state laser apparatus according to Embodiment 2 of the present invention.
- two internal housings 2a and 2b are provided in a single external housing 1 having a substantially sealed structure.
- the same collimating lens 901 as in the first embodiment the process shirt unit 10 and the safety shirt unit 11 are arranged.
- a laser light source including two cavity units 5a and 5b, a total reflection mirror 601 and a partial reflection mirror 701 is disposed.
- First inner casing 2a and second inner casing Since the housing 2b communicates with the beam duct 15a, even if the air purification unit 4 is installed in only one of the first and second inner housings 2a and 2b, If the air cleanliness of the air cleaning unit 4 is maintained, the same effect as this embodiment can be obtained. Since the number of units can be reduced, manufacturing, assembly and running costs can be reduced.
- any air purification unit 4 is clogged with a filter. Even if the function deteriorates due to the above or the function is stopped due to a failure, the air cleanliness in each internal housing 2 is maintained, and the risk for the failure of the air purification unit 4 can be reduced. In addition, even when the internal housing 2 is opened to the outside air due to maintenance or the like, the cleanliness can be recovered in a short time at the time of restoration, so that the downtime associated with maintenance can be shortened.
- FIG. 3 is a schematic diagram showing the configuration of the solid-state laser apparatus according to Embodiment 3 of the present invention.
- the internal casings 2a, 2b, the collimating lens 901, the process shirter unit 10, and the safety shirter unit 11, which are units constituting an optical system for transmitting the laser light 8 to the optical fiber 13, are provided.
- 2c is installed separately.
- the inner casings 2a, 2b, and 2c are individually provided for each unit that is removed by force if the same effect as in the first to second embodiments can be obtained.
- the collimator lens 901, the process shirt unit 10 and the safety shirt unit 11 are respectively shown in the internal casings 2a, 2b and 2c.
- the unit installed in the internal housing 2 is not limited to this.
- a unit for dividing the laser light 8 into a plurality of optical paths may be installed in the internal housing 2.
- a unit including an optical component that transmits or reflects the laser beam 8 is provided in the outer casing 1. If installed in the internal housing 2 and the surroundings of the optical components are kept clean with an air cleaning unit, the optical components are effectively prevented from being deteriorated and damaged, and a solid laser with excellent reliability. A device can be obtained. What is necessary is just to design suitably according to purposes, such as a size, a structure, and a maintenance method, about the number of the internal housing
- FIG. 4 is a schematic diagram showing the configuration of the solid-state laser apparatus according to Embodiment 4 of the present invention.
- a configuration is shown in which the second harmonic is generated by a wavelength conversion technique using a nonlinear optical crystal.
- 161 is an acousto-optic element disposed between the rod-type solid-state laser medium 501 and the total reflection mirror 601 in the first inner casing 2a.
- Q switch pulse oscillation is performed by applying modulation to.
- Reference numeral 162 denotes an acoustooptic device holder that holds the acoustooptic device 161 and is provided with an angle adjustment mechanism for the acoustooptic device 161.
- the rod-type solid laser medium 501 uses a YAG (yttrium aluminum garnet) crystal doped with Nd (neodymium), and is installed in the first inner casing 2a.
- the laser light source emits fundamental pulse light 8 with a wavelength of 1064 nm (nanometer) and a panoramic width of 60 to 70 ns (nanoseconds).
- Reference numeral 171 denotes a condensing lens that is installed in the second inner casing 2b and condenses the fundamental pulsed light 8.
- 172 holds the condensing lens 171 and It is a condensing lens holder provided with an adjustment mechanism for the direction.
- 181 is a non-linear optical crystal. In this embodiment, a 15 mm long LBO (lithium triborate) crystal is used in the second harmonic generation with a fundamental wavelength of 1064 nm to obtain a type 2 phase matching condition.
- Reference numeral 182 denotes a nonlinear optical crystal holder that holds the nonlinear optical crystal 181 and is provided with a temperature adjustment function for the nonlinear crystal 181.
- 211 is a separate mirror with a two-wavelength coating that reflects light with a wavelength of 1064 nm and transmits light with a wavelength of 532 nm. It is installed at an incident angle of 45 degrees with respect to the optical axis of harmonic 19.
- 212 is a separate mirror holder for holding a separate mirror. Of the fundamental waveless light 8 incident on the nonlinear optical crystal 181, a part is converted into the second harmonic wave 19, and the rest is transmitted through the nonlinear optical crystal 181 while maintaining the wavelength of 1064 nm.
- the laser light emitted from the nonlinear optical crystal 181 includes a fundamental pulse light 8 having a wavelength of 1064 nm and a second harmonic 19 having a wavelength of 532 nm. Separate the fundamental pulse light 8 and the second harmonic 19 by allowing the laser light that includes the fundamental pulse light 8 and the second harmonic 19 to enter the separate mirror 211 and transmitting only the second harmonic 19. Can do.
- the fundamental wave light 8 incident on the separate mirror 211 is reflected by the separate mirror 211, and the optical axis is bent at a right angle.
- the fundamental pulse light 8 reflected by the separate mirror 211 is absorbed by a damper disposed in the second inner casing 2b.
- the second harmonic 19 separated from the fundamental pulse light 8 by the separate mirror 211 is collimated by the collimating lens 901 installed in the third inner housing 2c, and the exit window 221, the outside The light is emitted to the outside through the emission port 24 provided on the side wall surface of the housing 1.
- Reference numeral 222 denotes an exit window holder for fixing the exit window 221 to the side wall of the third inner housing 2c.
- a fluoro rubber O-ring is used to secure the exit window 221 at the fixing section. It is sealed to maintain the airtightness.
- Reference numeral 23 denotes a ring-shaped packing made of foaming PTFE (tetrafluoroethylene), which maintains the sealing property at the outlet 24.
- an external housing 1 having a substantially sealed structure is provided, and the relative humidity in the external housing 1 is controlled to a specified value or less using a dehumidifier 3, and the external housing 1
- the internal housing 2 is installed in the inner housing 2, optical components are arranged in the inner housing 2, and the purified air is circulated using the air cleaning unit 4 installed on the top plate of the inner housing 2.
- the wavelength conversion efficiency to the second harmonic 19 is substantially proportional to the square of the fundamental wave incident intensity with respect to the nonlinear optical crystal 181. Therefore, in order to obtain high wavelength conversion efficiency, it is necessary to narrow down the fundamental wave pulse light 8 to a small diameter by the condenser lens 171. For this reason, even when a slight amount of foreign matter such as dust adheres to the incident surface of the nonlinear optical crystal 181, the nonlinear optical crystal 181 is easily destroyed by the irradiation of the condensed fundamental wave pulse light 8. Furthermore, since the LBO crystal used as the nonlinear optical crystal 181 in this embodiment has a hygroscopic property, when used in a high humidity environment, it absorbs moisture in the air and promotes deterioration such as discoloration.
- the ambient atmosphere of the non-linear optical crystal 181 that can be obtained by force is obtained by using clean, powerful humidity-controlled air that can achieve the same effect as in the first to third embodiments. Therefore, it is possible to suppress the deterioration of the nonlinear optical crystal 181 and to collect the fundamental wave pulse light 8 with a small diameter and make it incident on the nonlinear optical crystal 18 1. Wavelength conversion can be performed efficiently while preventing damage and destruction of the crystal 181 and maintaining high reliability.
- the configuration in which the LBO crystal is used as the nonlinear optical crystal 181 that generates the second harmonic is shown, but the type of the nonlinear optical crystal 181 is not limited to this. .
- the nonlinear optical crystal 181 if a KTP (botadium titanyl phosphor) crystal is used for the nonlinear optical crystal 181, the absorption coefficient of the fundamental wave increases, but since it has a high nonlinearity constant, even if the fundamental wave has a low output, it is relatively High wavelength conversion efficiency can be obtained, and if the reversal polarization type LN (lithium niobate) crystal is used, the interaction length (coherent length) can be increased. Even if it is used, wavelength conversion can be performed efficiently.
- an appropriate nonlinear optical crystal may be selected according to the desired specifications and performance.
- the configuration for generating the second harmonic has been described.
- the type of wavelength conversion is not limited to this, and higher third harmonics, fourth, and fourth harmonics are not limited thereto.
- the same effect as in the present embodiment can be obtained.
- the same effect can be obtained not only for harmonic generation but also for wavelength conversion by optical parametric oscillation and sum frequency mixing. Needless to say.
- a non-linear optical crystal that performs wavelength conversion is installed in the inner casing 2, the same effects as in the present embodiment can be obtained.
- the configuration for performing Q-switch pulse oscillation using the acousto-optic element 161 has been described, but the configuration for performing Q-switch pulse oscillation using an electro-optic element is also illustrated. The same effect as that of the embodiment can be obtained. Further, the present invention may be applied to a mode-locked laser as a configuration for generating a high peak pulse.
- an oscillator that is a laser light source, and a pulse of laser light extracted from the oscillator
- An internal housing 2 is provided for each of the pulse expander that extends the width, the regenerative amplifier that amplifies the laser light with the expanded pulse width, and the pulse compressor that compresses the pulse width of the amplified laser light. If the cleanliness within 2 and the humidity are controlled, the same effects as in the present embodiment can be obtained.
- the semiconductor laser is used as the excitation light source for optically exciting the rod-type solid laser medium.
- the type of excitation light source is not limited to this. However, even if a discharge lamp is used as the excitation light source, the same effect can be obtained.
- a rod-type YAG (yttrium aluminum nitride garnet) crystal doped with Nd (neodymium) is used as the solid laser medium used for the laser light source.
- the base material, active medium, and shape of the solid-state laser medium are not limited to this.
- a single crystal of alumina doped with Ti (titanium) or Cr (chromium) may be used as the solid laser medium, or a slab type YAG (yttrium aluminum garnet) crystal doped with Yb (yttrium). You can do it.
- the present invention can also be applied to a configuration in which a so-called semiconductor laser that uses a semiconductor as a solid-state laser medium is used as a laser light source.
- the force of the HEPA filter showing the configuration using the HEPA filter as the main filter of the air purifier unit is limited to this type. It ’s not something.
- a ULPA Ultra Low Penetration Air Filter
- the dust collection rate can be further increased.
- you want to remove organic component substances and ionic substances you can also use a chemical filter.
- the most appropriate air cleaning method should be selected according to the impurities and dust to be removed.
- the air cleaning unit is installed on the top plate of the internal housing. However, the location of the air cleaning unit with respect to the internal housing is the same. It is not limited to this, and it may be arranged at an optimal position according to the arrangement of the laser light source and optical system.
- Embodiments 1 to 4 the configuration using a solid polymer electrolyte membrane type dehumidifier is shown, but the configuration of the dehumidifier is not limited to this.
- the same effect can be obtained by installing silica gel as a desiccant in the external housing.
- the humidity in the external housing can be maintained substantially constant even when the apparatus is stopped or during a power failure.
- a detector is provided to monitor the humidity of the external housing and the amount of dust in the internal housing, and an interlock mechanism that stops the device when the humidity and the amount of dust reach specified values or more. Etc., the reliability of the solid-state laser device can be further improved. Industrial applicability
- the wavelength conversion laser device according to the present invention is suitable when it is difficult to prepare a clean room or the like for the installation of the laser device.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/916,114 US20090141746A1 (en) | 2005-06-02 | 2006-05-19 | Solid-state laser device |
| JP2007518911A JP4803176B2 (ja) | 2005-06-02 | 2006-05-19 | 固体レーザ装置 |
| DE112006001413T DE112006001413T5 (de) | 2005-06-02 | 2006-05-19 | Festkörper-Lasergerät |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005162607 | 2005-06-02 | ||
| JP2005-162607 | 2005-06-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006129502A1 true WO2006129502A1 (ja) | 2006-12-07 |
Family
ID=37481432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2006/310040 Ceased WO2006129502A1 (ja) | 2005-06-02 | 2006-05-19 | 固体レーザ装置 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20090141746A1 (ja) |
| JP (1) | JP4803176B2 (ja) |
| CN (1) | CN101189766A (ja) |
| DE (1) | DE112006001413T5 (ja) |
| WO (1) | WO2006129502A1 (ja) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008244084A (ja) * | 2007-03-27 | 2008-10-09 | Gigaphoton Inc | 紫外線ガスレーザ装置 |
| WO2009049978A3 (de) * | 2007-10-10 | 2009-08-20 | Bosch Gmbh Robert | Lasermodul |
| EP2031712A3 (en) * | 2007-08-30 | 2011-08-17 | The Boeing Company | Minimizing wavefront errors in resonators with thin disk lasers |
| JP2011211234A (ja) * | 2011-06-24 | 2011-10-20 | Gigaphoton Inc | 紫外線ガスレーザ装置 |
| US8699128B2 (en) * | 2009-10-16 | 2014-04-15 | Olympus Corporation | Laser scanning microscope |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008244084A (ja) * | 2007-03-27 | 2008-10-09 | Gigaphoton Inc | 紫外線ガスレーザ装置 |
| EP2031712A3 (en) * | 2007-08-30 | 2011-08-17 | The Boeing Company | Minimizing wavefront errors in resonators with thin disk lasers |
| WO2009049978A3 (de) * | 2007-10-10 | 2009-08-20 | Bosch Gmbh Robert | Lasermodul |
| US8699128B2 (en) * | 2009-10-16 | 2014-04-15 | Olympus Corporation | Laser scanning microscope |
| JP2011211234A (ja) * | 2011-06-24 | 2011-10-20 | Gigaphoton Inc | 紫外線ガスレーザ装置 |
| JP2017045753A (ja) * | 2015-08-24 | 2017-03-02 | ファナック株式会社 | 保守作業用の温度管理機能を有するレーザ装置 |
| JP2020516073A (ja) * | 2017-03-29 | 2020-05-28 | アイピージー フォトニクス コーポレーション | 小型ブラッグ格子パルス成形器を有するチャープパルス増幅レーザーシステム及び、これを近変換限界パルスを発生させるために動作させる方法 |
| JP7189146B2 (ja) | 2017-03-29 | 2022-12-13 | アイピージー フォトニクス コーポレーション | 小型ブラッグ格子パルス成形器を有するチャープパルス増幅レーザーシステム及び、これを近変換限界パルスを発生させるために動作させる方法 |
| JP2022190278A (ja) * | 2021-06-14 | 2022-12-26 | シヤチハタ株式会社 | 光学式距離測定装置の較正装置 |
| JP7718651B2 (ja) | 2021-06-14 | 2025-08-05 | シヤチハタ株式会社 | 恒温槽 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112006001413T5 (de) | 2008-04-30 |
| JPWO2006129502A1 (ja) | 2008-12-25 |
| CN101189766A (zh) | 2008-05-28 |
| US20090141746A1 (en) | 2009-06-04 |
| JP4803176B2 (ja) | 2011-10-26 |
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