专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4841528A Frequency doubled, cavity dumped feedback laser 失效
标题翻译：频率倍增，腔反馈激光
公开(公告)号：US4841528A
公开(公告)日：1989-06-20
申请号：US240205
申请日：1988-09-06
申请人： Donald L. Sipes, Jr. , Deborah L. Robinson
发明人： Donald L. Sipes, Jr. , Deborah L. Robinson
IPC分类号： H01S3/107 , H01S3/109 , H01S3/11
CPC分类号： H01S3/1075 , H01S3/109 , H01S3/08054 , H01S3/082 , H01S3/1068 , H01S3/1103
摘要： Higher efficiency in cavity dumping and frequency doubling in a laser used to produce modulated output beam pulses is achieved by deflecting light out of the resonant cavity to a third mirror through a frequency doubler using an electro-optic modulator and a polarizing beamsplitter in the resonant cavity, or using just an acousto-optic modulator to deflect light out of the laser cavity in response to a control signal (electric or acoustic). The frequency doubler in front of the third mirror rotates the frequency doubled light so that it will pass out of the laser cavity through the polarizing beamsplitter, while undoubled frequency light is reflected by the polarizing beamsplitter back into the gain medium of the laser. In the case of using a type-II frequency doubler, a dichroic beamsplitter deflects out the frequency doubled light and passes the undoubled frequency light to the polarizing beamsplitter for return to the laser gain medium. If an acousto-optic modulator is used, it deflects light out of the primary laser cavity, so a polarizing beamsplitter is not needed, and only a dichroic beamsplitter is needed to separate frequency doubled light out of the path from the third mirror.
摘要翻译：通过使用电光调制器和谐振腔中的偏振分束器将光从谐振腔偏转到倍频器，从而实现用于产生调制输出光束脉冲的激光器中的腔倾倒和倍频效率更高或者仅使用声光调制器来响应于控制信号（电或声）将光偏离激光腔。在第三反射镜前面的倍频器使倍频光旋转，使得其将通过偏振分束器从激光腔中通过，而不频率的光被偏振分束器反射回激光器的增益介质。在使用II型倍频器的情况下，二向色分束器偏转倍频光，并将未加倍频率的光通过偏振分束器返回激光增益介质。如果使用声光调制器，它将光从主激光腔偏转，因此不需要偏振分束器，只需要二向色分束器将倍频光从第三反射镜的路径分开。

2. 发明授权

US5347392A Electric-optic resonant phase modulator 失效
标题翻译：电光谐振相位调制器
公开(公告)号：US5347392A
公开(公告)日：1994-09-13
申请号：US842300
申请日：1992-02-26
申请人： Chien-Chung Chen , Deborah L. Robinson , Hamid Hemmati
发明人： Chien-Chung Chen , Deborah L. Robinson , Hamid Hemmati
IPC分类号： G02F1/21 , H04B10/145 , G03H1/02 , H01S3/10 , G08B5/23
CPC分类号： H04B10/50 , G02F1/21
摘要： An electro-optic resonant cavity is used to achieve phase modulation with lower driving voltages. Laser damage thresholds are inherently higher than with previously used integrated optics due to the utilization of bulk optics. Phase modulation is achieved at higher speeds with lower driving voltages than previously obtained with non-resonant electro-optic phase modulators. The instant scheme uses a data locking dither approach as opposed to the conventional sinusoidal locking schemes. In accordance with a disclosed embodiment, a resonant cavity modulator has been designed to operate at a data rate in excess of 100 Mbps. By carefully choosing the cavity finesse and its dimension, it is possible to control the pulse switching time to within 4 ns and to limit the required switching voltage to within 10 V. Experimentally, the resonant cavity can be maintained on resonance with respect to the input laser signal by monitoring the fluctuation of output intensity as the cavity is switched. This cavity locking scheme can be applied by using only the random data sequence, and without the need of additional dithering of the cavity. Compared to waveguide modulators, the resonant cavity has a comparable modulating voltage requirement. Because of its bulk geometry, resonant cavity modulator has the potential of accommodating higher throughput power. Furthermore, mode matching into a bulk device is easier and typically can be achieved with higher efficiency. On the other hand, unlike waveguide modulators which are essentially traveling wave devices, the resonant cavity modulator requires that the cavity be maintained in resonance with respect to the incoming laser signal. An additional control loop is incorporated into the modulator to maintain the cavity on resonance.
摘要翻译：使用电光谐振腔来实现具有较低驱动电压的相位调制。激光损伤阈值固有地高于以前使用的集成光学元件，因为利用了大量光学元件。相位调制在较高的速度下实现，其驱动电压低于先前用非谐振电光相位调制器获得的驱动电压。本方案使用数据锁定抖动方法，而不是常规的正弦锁定方案。根据所公开的实施例，已经设计了谐振腔调制器以超过100Mbps的数据速率工作。通过仔细选择腔体精度及其尺寸，可以将脉冲切换时间控制在4 ns内，并将所需的开关电压限制在10 V以内。实验上，谐振腔可以相对于输入端保持谐振激光信号通过监视腔切换时输出强度的波动。可以通过仅使用随机数据序列来应用该腔锁定方案，并且不需要额外的空腔抖动。与波导调制器相比，谐振腔具有相当的调制电压要求。由于其体积几何形状，谐振腔调制器具有容纳更高吞吐能力的潜力。此外，模块匹配成批量器件更容易，通常可以以更高的效率实现。另一方面，与基本上是行波器件的波导调制器不同，谐振腔调制器要求腔相对于输入的激光信号保持谐振。调制器中并入一个附加的控制回路，以保持谐振腔。

3. 发明授权

US4744616A Monolithic electro-optic modulator array 失效
标题翻译：单片电光调制器阵列
公开(公告)号：US4744616A
公开(公告)日：1988-05-17
申请号：US704922
申请日：1985-02-25
申请人： Deborah L. Robinson , William K. Marshall , Joseph Katz
发明人： Deborah L. Robinson , William K. Marshall , Joseph Katz
IPC分类号： G02B6/12 , G02F1/015 , G02F1/025 , G02F1/295 , G02B6/10
CPC分类号： G02B6/12004 , G02F1/025 , G02F1/295 , G02F2001/0151 , G02F2001/0155 , G02F2203/24
摘要： A PIN GaAlAs diode structure is provided with parameters for index guiding of light in a single mode. The index of refraction of the central layer I (which in practice may be lightly doped .pi. or .nu.) is greater than the p- and n-layers to create a slab waveguide in the transverse direction. Stripe contacts define separate waveguide channels that are separated electrically and optically by implanting protons or etching grooves between the stripe contacts in the upper layer. Separate reverse biasing voltages may be applied to the stripe contacts for modulation of the light in proportions to the voltage, either with absorption modulation, if the light wavelength is within about 500.ANG. of the bandgap of the .pi.-material, or phase-delay modulation, if the wavelength is separated from the bandgap of the .pi.-material by at least 900.ANG..
摘要翻译： PIN GaAlAs二极管结构具有用于在单个模式中的光的索引引导的参数。中心层I的折射率（实际上可能是轻掺杂的pI或nu）大于p层和n层，以在横向上产生平板波导。条纹触点限定了通过在上层中的条状接触之间注入质子或蚀刻凹槽而电和光学分离的分离的波导通道。如果光波长在pi材料的带隙的约500安培范围内，或者通过吸收调制，则分离的反向偏压电压可以施加到带状触点，以与电压成比例地调制光，或者相位延迟调制如果波长与pi材料的带隙分离至少900安培。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式