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1. 发明申请

US20090296199A1 Laser amplifiers with high gain and small thermal aberrations 审中-公开
公开(公告)号：US20090296199A1
公开(公告)日：2009-12-03
申请号：US12453625
申请日：2009-05-15
申请人： Kresimir Franjic , Renzhong Hua , R. J. Dwayne Miller
发明人： Kresimir Franjic , Renzhong Hua , R. J. Dwayne Miller
IPC分类号： H01S5/00 , H01S3/042 , H01S3/0941
CPC分类号： H01S3/0941 , H01S3/005 , H01S3/025 , H01S3/0407 , H01S3/042 , H01S3/0604 , H01S3/0606 , H01S3/0612 , H01S3/0615 , H01S3/0632 , H01S3/094053 , H01S3/094057 , H01S3/094084 , H01S3/1611 , H01S3/1673 , H01S3/2333 , H01S3/2341 , H01S2301/02
摘要： The present invention discloses a laser amplifier with high gain and low thermally induced optical aberrations on the amplified laser beam. The amplifier designs allow simple multipass configurations to optimally extract the gain and reduce thermally induced index of refraction aberrations, making it possible to obtain an amplified laser beam of high quality combined with very high overall gains comparable to those achievable with expensive regenerative amplifiers. The amplifier includes a thin active laser solid to create the population inversion and associated heat generation within the thin laser active solid possible for the desired gain value. The system includes a cooling device in thermal contact with the thin active laser solid to provide good heat transport and high reflectivity coatings at the wavelengths of the pump and laser wavelengths. The pump light sources are laser diodes tuned to the maximum absorption of the laser active material. The amplifier also includes an optical system to transport the pump light to the laser active solid in such a way as to further confine the absorption of light along the two orthogonal directions in the plane of the laser active solid in order to get high population inversion and consequently high gains possible.

2. 发明授权

US07630418B2 Laser system for generation of high-power sub-nanosecond pulses with controllable wavelength in 2-15 μm region 有权
标题翻译：用于产生2-15mum区域可控波长的大功率亚纳秒脉冲的激光系统
公开(公告)号：US07630418B2
公开(公告)日：2009-12-08
申请号：US11328462
申请日：2006-01-10
申请人： Kresimir Franjic , Darren Kraemer , Michael L. Cowan , Renzhong Hua , R. J. Dwayne Miller
发明人： Kresimir Franjic , Darren Kraemer , Michael L. Cowan , Renzhong Hua , R. J. Dwayne Miller
IPC分类号： H01S3/10
CPC分类号： G02F1/39 , A61B18/20 , A61C1/0046 , A61N2005/0659 , B23K26/0624 , B23K26/38 , B23K2103/32 , B23K2103/50 , G02F1/3534 , G02F2201/16 , G02F2203/11 , H01S3/0092 , H01S3/2383
摘要： A laser system capable of efficient production of high energy sub-nanosecond pulses in the 2-15 μm spectral region is disclosed. Diode pumped solid state lasers are used as pump sources. The system design is simple, reliable and compact allowing for easy integration. The laser system includes a combination of compact solid-state ˜1 micron laser sources, producing high power picosecond pulses, with optical parametric amplification and a quasi-continuous wave laser for seeding the amplification process that enables the efficient conversion of the high power ˜1 micron laser radiation to tuneable mid-infrared sub-ns pulses. New parametric processes are presented for achieving high gains in bulk nonlinear crystals. Furthermore, a method of exceeding the fundamental conversion efficiency limit of direct three wave mixing is presented. The compact and robust nature of this novel laser system opens up the use of high power and high peak power mid-infrared laser pulses to a wide variety of important medical and dental applications.
摘要翻译：公开了能够有效地生产2-15mum光谱区中的高能亚纳秒脉冲的激光系统。二极管泵浦固体激光器用作泵浦源。系统设计简单，可靠，紧凑，易于集成。激光系统包括紧凑型固态〜1微米激光源的组合，产生高功率皮秒脉冲，具有光学参数放大和准连续波激光器，用于播种放大过程，使得能够有效地转换高功率〜1 微米激光辐射可调谐中红外sub-ns脉冲。提出了新的参数化过程，以获得大量非线性晶体的高增益。此外，提出了一种超过直接三波混频的基本转换效率极限的方法。这种新颖的激光系统的紧凑和坚固的性质开启了大功率和高峰值功率的中红外激光脉冲对各种重要医疗和牙科应用的使用。

3. 发明授权

US07535633B2 Laser amplifiers with high gain and small thermal aberrations 有权
标题翻译：具有高增益和较小热像差的激光放大器
公开(公告)号：US07535633B2
公开(公告)日：2009-05-19
申请号：US11328450
申请日：2006-01-10
申请人： Kresimir Franjic , Renzhong Hua , R. J. Dwayne Miller
发明人： Kresimir Franjic , Renzhong Hua , R. J. Dwayne Miller
IPC分类号： H01S5/00 , H01S3/16 , H01S3/042
CPC分类号： H01S3/0941 , H01S3/005 , H01S3/025 , H01S3/0407 , H01S3/042 , H01S3/0604 , H01S3/0606 , H01S3/0612 , H01S3/0615 , H01S3/0632 , H01S3/094053 , H01S3/094057 , H01S3/094084 , H01S3/1611 , H01S3/1673 , H01S3/2333 , H01S3/2341 , H01S2301/02
摘要： The present invention discloses a laser amplifier with high gain and low thermally induced optical aberrations on the amplified laser beam. The amplifier designs allow simple multipass configurations to optimally extract the gain and reduce thermally induced index of refraction aberrations, making it possible to obtain an amplified laser beam of high quality combined with very high overall gains comparable to those achievable with expensive regenerative amplifiers. The amplifier includes a thin active laser solid to create the population inversion and associated heat generation within the thin laser active solid possible for the desired gain value. The system includes a cooling device in thermal contact with the thin active laser solid to provide good heat transport and high reflectivity coatings at the wavelengths of the pump and laser wavelengths. The pump light sources are laser diodes tuned to the maximum absorption of the laser active material. The amplifier also includes an optical system to transport the pump light to the laser active solid in such a way as to further confine the absorption of light along the two orthogonal directions in the plane of the laser active solid in order to get high population inversion and consequently high gains possible.
摘要翻译：本发明公开了一种在放大的激光束上具有高增益和低热诱导光学像差的激光放大器。放大器设计允许简单的多通道配置以最佳地提取增益并减少热诱导的折射像差指数，使得可以获得高质量的放大激光束，并且具有与用昂贵的再生放大器可实现的总增益相当的非常高的总增益。该放大器包括薄的有源激光器固体，以产生可用于所需增益值的薄激光器活性固体内的群体反演和相关的热量生成。该系统包括与薄活性激光器固体热接触的冷却装置，以在泵和激光波长的波长处提供良好的热传递和高反射率涂层。泵浦光源是激光二极管，被调整为激光活性材料的最大吸收。该放大器还包括一个光学系统，用于将泵浦光传送到激光活性固体，以进一步限制沿着激光活性固体平面中的两个正交方向的光的吸收，以便获得高的种群反演和因此可能获得高收益。

4. 发明申请

US20060153257A1 Laser amplifiers with high gain and small thermal aberrations 有权
公开(公告)号：US20060153257A1
公开(公告)日：2006-07-13
申请号：US11328450
申请日：2006-01-10
申请人： Kresimir Franjic , Renzhong Hua , R. J. Miller
发明人： Kresimir Franjic , Renzhong Hua , R. J. Miller
IPC分类号： H01S3/04
CPC分类号： H01S3/0941 , H01S3/005 , H01S3/025 , H01S3/0407 , H01S3/042 , H01S3/0604 , H01S3/0606 , H01S3/0612 , H01S3/0615 , H01S3/0632 , H01S3/094053 , H01S3/094057 , H01S3/094084 , H01S3/1611 , H01S3/1673 , H01S3/2333 , H01S3/2341 , H01S2301/02
摘要： The present invention discloses a laser amplifier with high gain and low thermally induced optical aberrations on the amplified laser beam. The amplifier designs allow simple multipass configurations to optimally extract the gain and reduce thermally induced index of refraction aberrations, making it possible to obtain an amplified laser beam of high quality combined with very high overall gains comparable to those achievable with expensive regenerative amplifiers. The amplifier includes a thin active laser solid to create the population inversion and associated heat generation within the thin laser active solid possible for the desired gain value. The system includes a cooling device in thermal contact with the thin active laser solid to provide good heat transport and high reflectivity coatings at the wavelengths of the pump and laser wavelengths. The pump light sources are laser diodes tuned to the maximum absorption of the laser active material. The amplifier also includes an optical system to transport the pump light to the laser active solid in such a way as to further confine the absorption of light along the two orthogonal directions in the plane of the laser active solid in order to get high population inversion and consequently high gains possible.

5. 发明申请

US20060153254A1 Laser system for generation of high-power sub-nanosecond pulses with controlable wavelengths in 2-15 mum region 有权
标题翻译：用于产生2-15mum区域中具有可控制波长的大功率亚纳秒脉冲的激光系统
公开(公告)号：US20060153254A1
公开(公告)日：2006-07-13
申请号：US11328462
申请日：2006-01-10
申请人： Kresimir Franjic , Darren Kraemer , Michael Cowan , Renzhong Hua , R.J. Miller
发明人： Kresimir Franjic , Darren Kraemer , Michael Cowan , Renzhong Hua , R.J. Miller
IPC分类号： H01S3/13
CPC分类号： G02F1/39 , A61B18/20 , A61C1/0046 , A61N2005/0659 , B23K26/0624 , B23K26/38 , B23K2103/32 , B23K2103/50 , G02F1/3534 , G02F2201/16 , G02F2203/11 , H01S3/0092 , H01S3/2383
摘要： A laser system capable of efficient production of high energy sub-nanosecond pulses in the 2-15 μm spectral region is disclosed. Diode pumped solid state lasers are used as pump sources. The system design is simple, reliable and compact allowing for easy integration. The laser system includes a combination of compact solid-state ˜1 micron laser sources, producing high power picosecond pulses, with optical parametric amplification and a quasi-continuous wave laser for seeding the amplification process that enables the efficient conversion of the high power ˜1 micron laser radiation to tuneable mid-infrared sub-ns pulses. New parametric processes are presented for achieving high gains in bulk nonlinear crystals. Furthermore, a method of exceeding the fundamental conversion efficiency limit of direct three wave mixing is presented. The compact and robust nature of this novel laser system opens up the use of high power and high peak power mid-infrared laser pulses to a wide variety of important medical and dental applications.
摘要翻译：公开了能够有效地生产2-15mum光谱区中的高能亚纳秒脉冲的激光系统。二极管泵浦固体激光器用作泵浦源。系统设计简单，可靠，紧凑，易于集成。激光系统包括紧凑型固态〜1微米激光源的组合，产生高功率皮秒脉冲，具有光学参数放大和准连续波激光器，用于播种放大过程，使得能够有效地转换高功率〜1 微米激光辐射可调谐中红外sub-ns脉冲。提出了新的参数化过程，以获得大量非线性晶体的高增益。此外，提出了一种超过直接三波混频的基本转换效率极限的方法。这种新颖的激光系统的紧凑和坚固的性质开启了大功率和高峰值功率的中红外激光脉冲对各种重要医疗和牙科应用的使用。

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