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1.发明授权
公开(公告)号：US5088105A
公开(公告)日：1992-02-11
申请号：US675432
申请日：1991-03-26
CPC分类号： H01S5/50 , H01S5/06243 , H01S5/10 , H01S5/1085 , H01S5/1243 , H01S5/4031
摘要： An optical amplifier having one or more amplifier regions with a noncollinear light path provided by curved or folded waveguides therein between input, output and reflective surfaces provided, for example, by a low reflectivity front facet and a high reflectivity rear facet. The amplifier regions are electrically pumped via conductive contacts which may be individually addressable for each amplifier region to provide phase control of the array of emitted light. Light is accepted through the front facet by a first amplifier region, is reflected from the rear facet and is emitted through the front facet. If there are multiple amplifier regions, a portion of the light is reflected by the front facet into an adjacent amplifier region. The light path is incident on the front and rear facets at an angle other than normal thereto and preferably at most 10.degree. from normal. The light source may be a laser diode which can be monolithically integrated on the same substrate as the amplifier to form a master oscillator power amplifier (MOPA) device. The laser can be wavelength tunable. The MOPA can also have a steerable output beam.
摘要翻译： 具有一个或多个具有非直线光路的放大器区域的光放大器区域，其通过弯曲或折叠波导在输入，输出和反射表面之间提供，例如由低反射率正面和高反射率后面提供。 放大器区域经由导电触点电泵浦，该触点可以对于每个放大器区域可单独寻址以提供发射光阵列的相位控制。 光通过第一放大器区域的前面被接受，从后面被反射并通过前面被发射。 如果存在多个放大器区域，则一部分光被前端面反射成相邻的放大器区域。 光路以与其正常不同的角度入射在前面和后面上，优选地与正常情况相比最多为10°。 光源可以是可以与放大器单片集成在同一衬底上的激光二极管，以形成主振荡器功率放大器（MOPA）器件。 激光可以波长可调。 MOPA也可以有一个可控的输出光束。
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公开(公告)号：US5103456A
公开(公告)日：1992-04-07
申请号：US559648
申请日：1990-07-30
CPC分类号： H01S5/026 , H01S5/4031 , H01S5/50
摘要： An integrated master oscillator/power amplifier semiconduction device having a laser diode oscillator, a broad area light amplifier and a coupling grating disposed to deflect light at an angle from the laser oscillator to the light amplifier. The amplifier may terminate as an output facet or use a grating surface emitter to couple amplified light out of the device. The orientation angle and grating period of the coupling grating are chosen to minimize feedback from the amplifier into the laser. This is achieved either by deflecting the light by other than a 90.degree. angle or by orienting the grating at other than 45.degree. with respect to laser even though light is deflected by 90.degree. so that any return light effectively "sees" a different grating. The laser can be a DFB or DBR laser and can be wavelength tunable.
摘要翻译： 一种具有激光二极管振荡器，广域光放大器和耦合光栅的集成主振荡器/功率放大器半导体器件，其设置成将光从激光振荡器偏转到光放大器。 放大器可以终止为输出小面或使用光栅表面发射器将放大的光耦合到设备外。 选择耦合光栅的取向角和光栅周期以最小化从放大器到激光器的反馈。 这可以通过将光偏转90°以外，或通过将光栅相对于激光定向45°以外的方式实现，即使光被偏转90°，使得任何返回光有效地“看到”不同的光栅。 激光器可以是DFB或DBR激光器，可以是波长可调谐的。
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公开(公告)号：US5048036A
公开(公告)日：1991-09-10
申请号：US638358
申请日：1991-01-04
CPC分类号： B82Y20/00 , H01S5/32308 , H01S5/34313 , H01S5/0021 , H01S5/305 , H01S5/3201 , H01S5/3403 , H01S5/343 , H01S5/34306 , H01S5/3432
摘要： Semiconductor heterostructure lasers having at least one lattice mismatched strain layer in the cladding proximate to the active region. Indium or phosphorus may be added in high concentration to form the strain layers. The strain layers may be spaced somewhat apart from the active region or may be adjacent to the active region. In either case, the strain layers decrease transparency current and increase differential gain.
摘要翻译： 半导体异质结构激光器在接近有源区域的包层中具有至少一个晶格失配的应变层。 可以以高浓度加入铟或磷以形成应变层。 应变层可以与有源区域稍微间隔开，或者可以与有源区域相邻。 在任一情况下，应变层降低透明度电流并增加微分增益。
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