公开(公告)号：WO2005046010A3

公开(公告)日：2005-05-19

申请号：PCT/US2004/026015

申请日：2004-08-11

Applicant: RAYTHEON COMPANY

Inventor： SPARIOSU, Kalin ,  BIRNBAUM, Milton

IPC: H01S3/067

Abstract: A solid-state eye-safe laser with gain boost by dual-wavelength, synchronized, pumplights. The laser includes a medium (47) doped with ions that emit light (62) at a laser wavelength as a result of the transition of electron energy from an upper energy level manifold to a lower energy level manifold. A first pumplight (56) couples energy into the medium (47) at a first wavelength that excites a first portion of the ions into said upper energy level manifold. A second pumplight (52) couples energy into said medium (47) at a second wavelength that excites a second portion of the ions to a third energy level manifold. A fraction of the ions relax to the upper energy level manifold and thereby increase the gain of the laser (2). The laser may be an erbium crystal laser, using yttrium­aluminum-garnet operating near 1640 nanometers. A second ion, such as ytterbium, may be diffused into the lasing medium (47), and an inter-ionic energy transfer employed to coupled the second pumplight (52) energy to the upper level energy manifold of he laser transition.

公开(公告)号：WO2004100330A1

公开(公告)日：2004-11-18

申请号：PCT/US2004/013241

申请日：2004-04-29

Applicant: RAYTHEON COMPANY

Inventor： SPARIOSU, Kalin ,  BIRNBAUM, Milton

IPC: H01S3/16

CPC classification number: H01S3/113 ,  H01S3/0612 ,  H01S3/0627 ,  H01S3/07 ,  H01S3/0809 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/1608 ,  H01S3/1611 ,  H01S3/1643

Abstract: An inherently efficient direct eye-safe laser based on Er:Crystal technology utilizing intra-cavity energy conversion. The Er:Crystal laser is intra-cavity pumped by a highly efficient ytterbium or neodymium crystal laser (64), which is in-turn, pumped by conventional infrared diodes array bars (52, 54). The laser is inherently compact and low­ cost allowing for significant scaling of the output energy and power with greatly reduced number of required diode pump sources. This intra-cavity pump scheme of appropriate Er:Crystals also provides for efficient generation of ultra-short Q-switched pulse operation of such lasers.

Abstract translation: 基于利用腔内能量转换的Er：Crystal技术的固有效率的直接眼睛安全激光器。 Er：水晶激光器是通过高效率的镱或钕晶体激光器（64）进行腔内泵浦，这是由传统的红外二极管阵列（52,54）反过来泵浦的。 激光器本质上紧凑且成本低，允许显着缩放输出能量和功率，大大减少了所需二极管泵浦源的数量。 这种适当Er：晶体的腔内泵浦方案还提供了这种激光器的超短Q开关脉冲操作的有效产生。

公开(公告)号：WO2005101594A1

公开(公告)日：2005-10-27

申请号：PCT/US2005/010722

申请日：2005-03-30

Applicant: RAYTHEON COMPANY

Inventor： SPARIOSU, Kalin ,  BIRNBAUM, Milton

IPC: H01S3/113

CPC classification number: H01S3/0627 ,  G02F1/0126 ,  G02F1/3523 ,  H01S3/0604 ,  H01S3/08054 ,  H01S3/106 ,  H01S3/1061 ,  H01S3/1109 ,  H01S3/113

Abstract: A modulated saturable absorber controlled laser. The laser includes an active medium (12); a saturable absorber material (18) operationally coupled to the medium to serve as a passive Q switch; and an energy source (20) disposed external to the medium for apply energy to the absorber. In particular embodiments, the energy source is a diode laser and focusing optics are included between the diode laser and the absorber. Modulation of the gain at the photon round trip time in the laser resonator causes a mode-locked laser output. A dichroic beamsplitter (24) is included in this embodiment for directing energy to the absorber. In an alternative embodiment, the diode laser is a quasi-monolithic diode laser assembly ring (27).

Abstract translation: 调制可饱和吸收器受控激光器。 激光器包括活性介质（12）; 可操作地耦合到介质以用作无源Q开关的可饱和吸收材料（18）; 以及设置在所述介质外部以将能量施加到所述吸收体的能量源（20）。 在特定实施例中，能量源是二极管激光器，并且聚焦光学器件包括在二极管激光器和吸收器之间。 在激光谐振器中调制光子往返时间的增益导致锁模激光输出。 本实施例中包括二向色分束器（24），用于将能量引导到吸收器。 在替代实施例中，二极管激光器是准单片二极管激光器组件环（27）。

公开(公告)号：EP1741167A1

公开(公告)日：2007-01-10

申请号：EP05740237.2

申请日：2005-03-30

Applicant: RAYTHEON COMPANY

Inventor： SPARIOSU, Kalin ,  BIRNBAUM, Milton

IPC: H01S3/113 ,  H01S3/098 ,  H01S3/106

CPC classification number: H01S3/0627 ,  G02F1/0126 ,  G02F1/3523 ,  H01S3/0604 ,  H01S3/08054 ,  H01S3/106 ,  H01S3/1061 ,  H01S3/1109 ,  H01S3/113

Abstract: A modulated saturable absorber controlled laser. The laser includes an active medium (12); a saturable absorber material (18) operationally coupled to the medium to serve as a passive Q switch; and an energy source (20) disposed external to the medium for apply energy to the absorber. In particular embodiments, the energy source is a diode laser and focusing optics are included between the diode laser and the absorber. Modulation of the gain at the photon round trip time in the laser resonator causes a mode-locked laser output. A dichroic beamsplitter (24) is included in this embodiment for directing energy to the absorber. In an alternative embodiment, the diode laser is a quasi-monolithic diode laser assembly ring (27).

公开(公告)号：EP1658664B1

公开(公告)日：2007-09-26

申请号：EP04816803.3

申请日：2004-08-11

Applicant: RAYTHEON COMPANY

Inventor： SPARIOSU, Kalin ,  BIRNBAUM, Milton

IPC: H01S3/067

CPC classification number: H01S3/0941 ,  H01S3/005 ,  H01S3/025 ,  H01S3/042 ,  H01S3/0606 ,  H01S3/061 ,  H01S3/0612 ,  H01S3/08095 ,  H01S3/09403 ,  H01S3/094038 ,  H01S3/094084 ,  H01S3/094096 ,  H01S3/09415 ,  H01S3/113 ,  H01S3/1608 ,  H01S3/1618 ,  H01S3/1643

Abstract: A solid-state eye-safe laser with gain boost by dual-wavelength, synchronized, pumplights. The laser includes a medium (47) doped with ions that emit light (62) at a laser wavelength as a result of the transition of electron energy from an upper energy level manifold to a lower energy level manifold. A first pumplight (56) couples energy into the medium (47) at a first wavelength that excites a first portion of the ions into said upper energy level manifold. A second pumplight (52) couples energy into said medium (47) at a second wavelength that excites a second portion of the ions to a third energy level manifold. A fraction of the ions relax to the upper energy level manifold and thereby increase the gain of the laser (2). The laser may be an erbium crystal laser, using yttrium­aluminum-garnet operating near 1640 nanometers. A second ion, such as ytterbium, may be diffused into the lasing medium (47), and an inter-ionic energy transfer employed to coupled the second pumplight (52) energy to the upper level energy manifold of he laser transition.

公开(公告)号：EP1618634A1

公开(公告)日：2006-01-25

申请号：EP04750911.2

申请日：2004-04-29

Applicant: RAYTHEON COMPANY

Inventor： SPARIOSU, Kalin ,  BIRNBAUM, Milton

IPC: H01S3/16

CPC classification number: H01S3/113 ,  H01S3/0612 ,  H01S3/0627 ,  H01S3/07 ,  H01S3/0809 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/1608 ,  H01S3/1611 ,  H01S3/1643

Abstract: An inherently efficient direct eye-safe laser based on Er:Crystal technology utilizing intra-cavity energy conversion. The Er:Crystal laser is intra-cavity pumped by a highly efficient ytterbium or neodymium crystal laser (64), which is in-turn, pumped by conventional infrared diodes array bars (52, 54). The laser is inherently compact and low­ cost allowing for significant scaling of the output energy and power with greatly reduced number of required diode pump sources. This intra-cavity pump scheme of appropriate Er:Crystals also provides for efficient generation of ultra-short Q-switched pulse operation of such lasers.

公开(公告)号：EP1741167B1

公开(公告)日：2009-11-18

申请号：EP05740237.2

申请日：2005-03-30

Applicant: RAYTHEON COMPANY

Inventor： SPARIOSU, Kalin ,  BIRNBAUM, Milton

IPC: H01S3/113 ,  H01S3/098 ,  H01S3/106

CPC classification number: H01S3/0627 ,  G02F1/0126 ,  G02F1/3523 ,  H01S3/0604 ,  H01S3/08054 ,  H01S3/106 ,  H01S3/1061 ,  H01S3/1109 ,  H01S3/113

Abstract: A modulated saturable absorber controlled laser. The laser includes an active medium (12); a saturable absorber material (18) operationally coupled to the medium to serve as a passive Q switch; and an energy source (20) disposed external to the medium for apply energy to the absorber. In particular embodiments, the energy source is a diode laser and focusing optics are included between the diode laser and the absorber. Modulation of the gain at the photon round trip time in the laser resonator causes a mode-locked laser output. A dichroic beamsplitter (24) is included in this embodiment for directing energy to the absorber. In an alternative embodiment, the diode laser is a quasi-monolithic diode laser assembly ring (27).

公开(公告)号：EP1618634B1

公开(公告)日：2009-03-11

申请号：EP04750911.2

申请日：2004-04-29

Applicant: RAYTHEON COMPANY

Inventor： SPARIOSU, Kalin ,  BIRNBAUM, Milton

IPC: H01S3/16

CPC classification number: H01S3/113 ,  H01S3/0612 ,  H01S3/0627 ,  H01S3/07 ,  H01S3/0809 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/1608 ,  H01S3/1611 ,  H01S3/1643

Abstract: An inherently efficient direct eye-safe laser based on Er:Crystal technology utilizing intra-cavity energy conversion. The Er:Crystal laser is intra-cavity pumped by a highly efficient ytterbium or neodymium crystal laser (64), which is in-turn, pumped by conventional infrared diodes array bars (52, 54). The laser is inherently compact and low­ cost allowing for significant scaling of the output energy and power with greatly reduced number of required diode pump sources. This intra-cavity pump scheme of appropriate Er:Crystals also provides for efficient generation of ultra-short Q-switched pulse operation of such lasers.

公开(公告)号：EP1658664A2

公开(公告)日：2006-05-24

申请号：EP04816803.3

申请日：2004-08-11

Applicant: RAYTHEON COMPANY

Inventor： SPARIOSU, Kalin ,  BIRNBAUM, Milton

IPC: H01S3/067

CPC classification number: H01S3/0941 ,  H01S3/005 ,  H01S3/025 ,  H01S3/042 ,  H01S3/0606 ,  H01S3/061 ,  H01S3/0612 ,  H01S3/08095 ,  H01S3/09403 ,  H01S3/094038 ,  H01S3/094084 ,  H01S3/094096 ,  H01S3/09415 ,  H01S3/113 ,  H01S3/1608 ,  H01S3/1618 ,  H01S3/1643

Abstract: A solid-state eye-safe laser with gain boost by dual-wavelength, synchronized, pumplights. The laser includes a medium (47) doped with ions that emit light (62) at a laser wavelength as a result of the transition of electron energy from an upper energy level manifold to a lower energy level manifold. A first pumplight (56) couples energy into the medium (47) at a first wavelength that excites a first portion of the ions into said upper energy level manifold. A second pumplight (52) couples energy into said medium (47) at a second wavelength that excites a second portion of the ions to a third energy level manifold. A fraction of the ions relax to the upper energy level manifold and thereby increase the gain of the laser (2). The laser may be an erbium crystal laser, using yttrium­aluminum-garnet operating near 1640 nanometers. A second ion, such as ytterbium, may be diffused into the lasing medium (47), and an inter-ionic energy transfer employed to coupled the second pumplight (52) energy to the upper level energy manifold of he laser transition.