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In the processing of common optical elements, there are many problems in drilling high-precision holes on the glass ceramics with the traditional drilling technology. The common problems are ellipse, decentration, taper and edge cracks, etc. To resolve these problems, a new drilling technology was used, and a high-precision inner hole, whose diameter tolerance and coaxiality were 0.01mm, was prepared on a glass ceramic by using a simple drilling machine and a universal cylindrical grinder. The production practice shows that this process is repetitive and steady. The problems existing in the glass drilling were solved and the high-precision inner holes were obtained.
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武汉冠嘉的 852 单频激光器采用单频
DFB 激光二极管以及超低噪声驱动模块，
集成隔离器、分束器和光纤耦合输出，
封装尺寸小巧，功耗低，高消光比输
出，抗环境干扰能力更优秀。
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武汉冠嘉的 1.5μm PZT 热调窄线宽
激光器利用高 Q 品质因子的外腔反馈，
通过自注入锁定方式实现超低的相位噪
声，以及超窄线宽激光输出，封装尺寸
小巧，功耗更低，抗环境干扰能力更优
秀，广泛应用于光纤传感，相干通信，
相干激光雷达，量子技术等领域。
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The typical wavelength: 340、380、405、450、492、510、546、578、589、590、600、620、630 nm
Center wavelength tolerance: + / - 2 nm
Peak transmittance: 20% 85% (related to wavelength and instrument types)
Half the peak bandwidth: 8 + / - 2 nm
Background: T 10 or less - 5-10-6
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