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1. 发明授权

US07123635B2 Helium-cooled laser device 有权
标题翻译：氦冷激光装置
公开(公告)号：US07123635B2
公开(公告)日：2006-10-17
申请号：US10619305
申请日：2003-07-14
申请人： Yusuke Tamaki , Kazuya Takasago , Taisuke Miura , Hitoshi Sekita
发明人： Yusuke Tamaki , Kazuya Takasago , Taisuke Miura , Hitoshi Sekita
IPC分类号： H01S3/04
CPC分类号： H01S3/042 , H01S3/025 , H01S3/027 , H01S3/0404
摘要： The present invention offers a laser oscillator device having sufficient cooling ability to maintain a lasing medium which generates high-density thermal energy at a temperature appropriate for use, while being capable of being made compact. The laser oscillator device comprises an excitation beam source for generating an excitation beam, a laser medium for receiving the excitation beam and performing optical amplification, a laser oscillator device for causing resonance of light emitted by the laser medium for laser oscillation, and a cooling system for cooling said laser medium, wherein the cooling system uses a gas as the heat-carrying medium.
摘要翻译：本发明提供了具有足够的冷却能力的激光振荡器装置，以保持在适于使用的温度下产生高密度热能的激光介质，同时能够制造得紧凑。激光振荡器装置包括用于产生激发光束的激发光束源，用于接收激发光束并执行光放大的激光介质，用于引起由激光介质发射的用于激光振荡的光的共振的激光振荡器装置，以及冷却系统用于冷却所述激光介质，其中所述冷却系统使用气体作为所述载热介质。

2. 发明授权

US07012940B2 Laser resonator and adjustment method 失效
标题翻译：激光谐振器和调节方法
公开(公告)号：US07012940B2
公开(公告)日：2006-03-14
申请号：US10619303
申请日：2003-07-14
申请人： Yusuke Tamaki , Hitoshi Sekita , Kazuya Takasago , Taisuke Miura
发明人： Yusuke Tamaki , Hitoshi Sekita , Kazuya Takasago , Taisuke Miura
IPC分类号： H01S3/00
CPC分类号： H01S3/235 , H01S3/08 , H01S3/08072 , H01S3/106
摘要： The present invention has the object of offering a laser resonator capable of maintaining high amplification efficiency even if the thermal lensing effect occurring in the laser medium varies during operation or over repeated operation and suspension of the laser device. The laser resonator comprises at least a pair of reflection portions (planar reflective mirrors 3) provided such as to allow a laser beam to oscillate therebetween; a laser medium provided on the optical path of the laser between the pair of reflection portions; an excitation portion (excitation laser device 5) for exciting the laser medium; an optical system (convex lens 1) provided on the optical path of the laser beam between the laser medium and the pair of reflection portions for changing the state of the laser in the laser medium; and a movement portion for moving the optical system along the optical axis of the laser.
摘要翻译：本发明的目的是提供一种激光谐振器，即使在激光介质中发生的热透镜效应在操作期间或者在激光装置的重复操作和暂停时都会发生变化时，其能够保持高的放大效率。激光谐振器包括至少一对反射部分（平面反射镜3），其被设置为允许激光束在它们之间振荡; 设置在所述一对反射部之间的所述激光的光路上的激光介质; 用于激发激光介质的激励部分（激发激光装置5）在激光介质和一对反射部分之间设置在激光束的光路上的光学系统（凸透镜1），用于改变激光介质中激光的状态; 以及用于沿着激光的光轴移动光学系统的移动部分。

3. 发明授权

US06882469B2 Regenerative optical amplifier 失效
标题翻译：再生光放大器
公开(公告)号：US06882469B2
公开(公告)日：2005-04-19
申请号：US10619310
申请日：2003-07-14
申请人： Yusuke Tamaki , Kazuya Takasago , Taisuke Miura , Hitoshi Sekita
发明人： Yusuke Tamaki , Kazuya Takasago , Taisuke Miura , Hitoshi Sekita
IPC分类号： G02F1/03 , H01S3/107 , H01S3/23 , H01S3/00
CPC分类号： H01S3/235 , H01S3/1075
摘要： The invention offers a regenerative optical amplifier enabling voltage to be easily applied to polarizing elements such as Pockels cells, without the need for complicated drive circuitry. An input beam of S-polarized light is reflected by a polarizer 1 and advances to a Pockels cell 2. In the time it takes for the input beam, having once passed through the Pockels cell 2, to be reflected by a reflective mirror 3 and return to the Pockels cell 2, a voltage VP1 causing a 90-degree rotation in the polarization of transmitted light is applied to the Pockels cell 2, and this applied voltage VP1 is maintained. The input beam is converted by the Pockels cell 2 into a P-polarized light pulse which is transmitted by the polarizer. Subsequently, the light pulse is converted from P-polarized light to S-polarized light and back to P-polarized light with each roundtrip of the Pockels cell 2, while passing each time between the reflective mirror 3, laser crystal 4 and reflective mirror 7, so as to be amplified in the resonator formed thereby. The amplified light pulse is extracted by applying a voltage VP2 causing a 90-degree rotation of the polarization of the transmitted light to the Pockels cell 6 to convert the light pulse to S-polarized light which is then reflected out of the resonator by the polarizer 5.
摘要翻译：本发明提供一种再生式光放大器，其使电压容易地应用于诸如Pockels电池的偏振元件，而不需要复杂的驱动电路。 S偏振光的输入光束被偏振器1反射并前进到Pockels单元2。在输入光束一旦经过普克尔斯单元2而被反射镜3反射并返回到普克尔斯单元2的时候，将产生90度的电压V P1，透射光的偏振度的旋转角度被施加到普克尔斯单元2，并且保持该施加电压V P1。输入光束由Pockels单元2转换成由偏振器透射的P偏振光脉冲。随后，光脉冲从P偏振光转换成S偏振光，并且随着普克尔斯单元2的每个往返光而被转换成P偏振光，同时每次在反射镜3，激光晶体4和反射镜7之间通过以便在由此形成的谐振器中被放大。通过施加将透射光的偏振90度旋转到Pockels单元6的电压V P2 P2来提取放大的光脉冲，以将光脉冲转换成S偏振光由偏振器5反射出谐振器。

4. 发明申请

US20060274795A1 Femtosecond laser device having output stabilizing mechanism 有权
标题翻译：具有输出稳定机构的飞秒激光装置
公开(公告)号：US20060274795A1
公开(公告)日：2006-12-07
申请号：US11407712
申请日：2006-04-20
申请人： Hitoshi Sekita , Kazuya Takasago , Nobuo Nakata , Arata Nakamura
发明人： Hitoshi Sekita , Kazuya Takasago , Nobuo Nakata , Arata Nakamura
IPC分类号： H01S3/13 , H01S3/098
CPC分类号： H01S3/005 , H01S3/1301 , H01S3/235
摘要： A femtosecond laser with stabilized output, and a method for stabilizing the output of a femtosecond laser. The femtosecond laser comprises a regenerative amplifier, a photodetector, a control portion and a variable attenuator, wherein the variable attenuator is provided so as to be capable of controlling an output beam of the regenerative amplifier, the photodetector is provided between the regenerative amplifier and the variable attenuator, the photodetector detects an output beam of the regenerative amplifier and transmits the results of the detection to a power controller, and the power controller controls the variable attenuator depending on the a difference between a predetermined target value and the results.
摘要翻译：具有稳定输出的飞秒激光器和用于稳定飞秒激光器的输出的方法。飞秒激光器包括再生放大器，光电检测器，控制部分和可变衰减器，其中可变衰减器被设置为能够控制再生放大器的输出光束，光电检测器设置在再生放大器和可变衰减器，光电检测器检测再生放大器的输出光束，并将检测结果发送到功率控制器，功率控制器根据预定目标值与结果之间的差异来控制可变衰减器。

5. 发明授权

US07466730B2 Femtosecond laser device having output stabilizing mechanism 有权
标题翻译：具有输出稳定机构的飞秒激光装置
公开(公告)号：US07466730B2
公开(公告)日：2008-12-16
申请号：US11407712
申请日：2006-04-20
申请人： Hitoshi Sekita , Kazuya Takasago , Nobuo Nakata , Arata Nakamura
发明人： Hitoshi Sekita , Kazuya Takasago , Nobuo Nakata , Arata Nakamura
IPC分类号： H01S3/13
CPC分类号： H01S3/005 , H01S3/1301 , H01S3/235
摘要： A femtosecond laser with stabilized output, and a method for stabilizing the output of a femtosecond laser. The femtosecond laser comprises a regenerative amplifier, a photodetector, a control portion and a variable attenuator, wherein the variable attenuator is provided so as to be capable of controlling an output beam of the regenerative amplifier, the photodetector is provided between the regenerative amplifier and the variable attenuator, the photodetector detects an output beam of the regenerative amplifier and transmits the results of the detection to a power controller, and the power controller controls the variable attenuator depending on the a difference between a predetermined target value and the results.
摘要翻译：具有稳定输出的飞秒激光器和用于稳定飞秒激光器的输出的方法。飞秒激光器包括再生放大器，光电检测器，控制部分和可变衰减器，其中可变衰减器被设置为能够控制再生放大器的输出光束，光电检测器设置在再生放大器和可变衰减器，光电检测器检测再生放大器的输出光束，并将检测结果发送到功率控制器，功率控制器根据预定目标值与结果之间的差异来控制可变衰减器。

6. 发明授权

US06463083B1 Laser radiation device employing a fiber laser capable of emitting a laser beam including two or more wavelength components 失效
标题翻译：使用能够发射包括两个或更多个波长分量的激光束的光纤激光器的激光辐射装置
公开(公告)号：US06463083B1
公开(公告)日：2002-10-08
申请号：US09389749
申请日：1999-09-07
申请人： Tetsumi Sumiyoshi , Hitoshi Sekita
发明人： Tetsumi Sumiyoshi , Hitoshi Sekita
IPC分类号： H01S330
CPC分类号： H01S3/06708 , B23K26/06 , B23K26/064 , B23K26/0643 , B23K26/0648 , B23K26/0665 , H01S3/0809 , H01S3/161 , H01S3/1616
摘要： A laser radiation device comprises a pumping light emission section, a fiber laser device and a beam guiding section. The pumping light emission section generates and emits pumping light. In the fiber laser device, an optical fiber doped with laser ions is excited by the pumping light and thereby a laser beam including two or more wavelength components is generated. The beam guiding section guides the laser beam into desired place and direction. The laser beam including the two or more wavelength components having characteristic effects are focused by a beam shaping section and applied to the surface of an object. When holmium ions are doped in the optical fiber of the fiber laser device as the laser ions, a laser beam including a 3 &mgr;m band component (which is suitable for precise incision of a living body) and a 2 &mgr;m band component (which is suitable for tissue coagulation and hemostasis) is emitted by the fiber laser device, and the two wavelength components are applied to the surface of the object maintaining coaxiality, thereby the two effects of the two wavelength components are attained simultaneously on the object. The laser radiation device including only one laser device can be implemented with low manufacturing cost and in a small size.
摘要翻译：激光辐射装置包括泵浦光发射部分，光纤激光装置和光束引导部分。泵浦光发射部分产生并发射泵浦光。在光纤激光器件中，掺杂有激光离子的光纤被泵浦光激发，由此产生包括两个或更多个波长分量的激光束。光束引导部分将激光束引导到所需的位置和方向。包括具有特征效应的两个或更多个波长分量的激光束由光束成形部分聚焦并施加到物体的表面。当钬离子掺杂在光纤激光器件的光纤中作为激光离子时，包括3个母体带组分（其适用于精确切割活体）和2个母带组分（其合适的）的激光束用于组织凝固和止血）由光纤激光装置发射，并且将两个波长分量施加到保持同轴度的物体的表面，由此在物体上同时获得两个波长分量的两个效果。可以以低制造成本和小尺寸实现仅包括一个激光装置的激光辐射装置。

7. 发明授权

US07689369B2 Problem diagnosis method and problem repair method for laser device 失效
标题翻译：激光装置的问题诊断方法和问题修复方法
公开(公告)号：US07689369B2
公开(公告)日：2010-03-30
申请号：US11436817
申请日：2006-05-18
申请人： Akira Watanabe , Tadashi Okuno , Hiroshi Tsugita , Tetsumi Sumiyoshi , Hitoshi Sekita
发明人： Akira Watanabe , Tadashi Okuno , Hiroshi Tsugita , Tetsumi Sumiyoshi , Hitoshi Sekita
IPC分类号： G01B3/44 , G01B3/52 , G01B5/30
CPC分类号： H01S3/0014 , A61B2018/00636 , B23K26/03 , B23K26/032 , B23K26/034 , B23K26/707 , B23K2103/30 , B23K2103/50 , G06F19/00 , G16H40/40 , H01S3/0007 , H01S3/0602 , H01S3/0941 , H01S3/13 , H01S3/1643
摘要： A problem diagnosis method and problem repair method for a laser device are provided. The method includes measuring the intensity of scattered light generated by an optical part inside the laser device; referring to data indicating a temporal change in the scattered light predicted under predetermined operating conditions of the laser device, and predicting the seriousness of the problem from the intensity of scattered light; and determining what kind of maintenance work is necessary based on the seriousness of the problem. Additionally, the seriousness of the problem in the optical part can be predicted by executing fuzzy logic based on membership functions defining the relationship between scattered light intensity and the seriousness of problems of optical parts.
摘要翻译：提供了一种用于激光装置的问题诊断方法和问题修复方法。该方法包括测量由激光装置内部的光学部件产生的散射光的强度; 参照表示在激光装置的预定操作条件下预测的散射光的时间变化的数据，并根据散射光的强度预测问题的严重性; 并根据问题的严重性确定需要什么样的维护工作。另外，可以通过基于限定散射光强度与光学部件问题严重性之间的关系的隶属函数执行模糊逻辑来预测光学部件中的问题的严重性。

8. 发明授权

US06631153B2 Light generating device and laser device using said light generating device 失效
公开(公告)号：US06631153B2
公开(公告)日：2003-10-07
申请号：US09876329
申请日：2001-06-07
申请人： Tetsumi Sumiyoshi , Hitoshi Sekita , Akira Shiratori
发明人： Tetsumi Sumiyoshi , Hitoshi Sekita , Akira Shiratori
IPC分类号： H01S310
CPC分类号： G02F1/39 , H01S3/0941 , H01S3/1024
摘要： The invention offers a low-noise, compact, high-efficiency light generating device and an irradiation method thereof for use in medical applications. A fundamental harmonic laser head 106 is composed of a quasi-continuous wave oscillation mode laser diode (QCW-LD) 101, a laser crystal 103, a rear mirror 104 and an output mirror 105. The QCW-LD 101 is driven by an LD power source 102 capable of modulating the pulse waveform in time. A beam adjusting portion 108 comprises a wave plate, a polarizer, a lens and an isolator. A wavelength converting portion 112 is an optical parametric oscillator (OPO) comprising a non-linear optical crystal 109, an OPO input mirror and an OPO output mirror 111.

9. 发明申请

US20060274794A1 Problem diagnosis method and problem repair method for laser device 失效
标题翻译：激光装置的问题诊断方法和问题修复方法
公开(公告)号：US20060274794A1
公开(公告)日：2006-12-07
申请号：US11436817
申请日：2006-05-18
申请人： Akira Watanabe , Tadashi Okuno , Hiroshi Tsugita , Tetsumi Sumiyoshi , Hitoshi Sekita
发明人： Akira Watanabe , Tadashi Okuno , Hiroshi Tsugita , Tetsumi Sumiyoshi , Hitoshi Sekita
IPC分类号： H01S3/13 , H01S3/00
CPC分类号： H01S3/0014 , A61B2018/00636 , B23K26/03 , B23K26/032 , B23K26/034 , B23K26/707 , B23K2103/30 , B23K2103/50 , G06F19/00 , G16H40/40 , H01S3/0007 , H01S3/0602 , H01S3/0941 , H01S3/13 , H01S3/1643
摘要： A problem diagnosis method and problem repair method for a laser device such as laser treatment devices used in the medical field and laser processing devices used in industrial fields, capable of detecting problems in laser devices early and reducing the time required for maintenance work on the laser devices are provided. The method comprises a step of measuring the intensity of scattered light generated by an optical part inside the laser device; a step of referring to data indicating a temporal change in the scattered light predicted under predetermined operating conditions of the laser device, and predicting the seriousness of the problem from the intensity of scattered light; and a step of determining what kind of maintenance work is necessary based on the seriousness of the problem. Additionally, the seriousness of the problem in the optical part can be predicted by executing fuzzy logic based on membership functions defining the relationship between scattered light intensity and the seriousness of problems of optical parts.
摘要翻译：用于医疗领域中使用的激光治疗装置的激光装置的问题诊断方法和问题修复方法以及在工业领域中使用的激光加工装置，能够及早检测激光装置中的问题，并减少激光器的维护工作所需的时间提供设备。该方法包括测量由激光装置内部的光学部件产生的散射光的强度的步骤; 参考指示在激光装置的预定操作条件下预测的散射光的时间变化的数据的步骤，并且根据散射光的强度预测问题的严重性; 并根据问题的严重性确定必要的维修工作。另外，可以通过基于限定散射光强度与光学部件问题严重性之间的关系的隶属函数执行模糊逻辑来预测光学部件中的问题的严重性。

10. 发明授权

US5982792A Solid-state laser device 失效
标题翻译：固态激光器件
公开(公告)号：US5982792A
公开(公告)日：1999-11-09
申请号：US63053
申请日：1998-04-21
申请人： Tadashi Kasamatsu , Hitoshi Sekita
发明人： Tadashi Kasamatsu , Hitoshi Sekita
IPC分类号： H01S3/02 , H01S3/04 , H01S3/042 , H01S3/094 , H01S3/0941 , H01S3/16
CPC分类号： H01S3/042 , H01S3/025 , H01S3/0405 , H01S3/09415 , H01S3/1618 , H01S3/164
摘要： In a quasi-three-level solid-state laser that is excited by a semiconductor laser, a temperature-controlling apparatus is used to operate the crystal temperature that enables optimum laser operation in terms of both efficiency and output, based on the effect that cooling the crystal has on reducing the efficiency of absorption of power from the semiconductor excitation laser and the effect that cooling the crystal has on lowering the oscillation threshold value.
摘要翻译：在由半导体激光器激发的准三电平固体激光器中，使用温度控制装置来操作晶体温度，以便在效率和输出两方面基于冷却效果来实现最佳的激光器操作该晶体已经降低了半导体激光激光器的功率吸收效率和降低晶体振荡阈值的效果。

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