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US07733925B2 Continuous wavelength tunable laser source with optimum positioning of pivot axis for grating 有权
连续波长可调激光源，光栅枢轴的最佳定位

Continuous wavelength tunable laser source with optimum positioning of pivot axis for grating
Abstract:
A laser source (10) for generating a continuously wavelength tunable light (12) includes a gain media (16), an optical output coupler (36F), a cavity collimator (38A), a diffraction grating (30), a grating beam (54), and a beam attacher (56). The diffraction grating (30) is spaced apart from the cavity collimator (38A) and the grating (30) cooperates with the optical output coupler (36F) to define an external cavity (32). The grating (30) includes a grating face surface (42A) that is in a grating plane (42B). The beam attacher (56) retains the grating beam (54) and allows the grating beam (54) and the grating (30) to effectively pivot about a pivot axis (33) that is located approximately at an intersection of a pivot plane (50) and the grating plane (42B). As provided herein, the diffraction grating (30) can be pivoted about the unique pivot axis (33) to move the diffraction grating (30) relative to the gain media (16) to continuously tune the lasing frequency of the external cavity (32) and the wavelength of the output light (12) so that the output light (12) is mode hop free.
Abstract(Chinese):

用于产生连续波长可调光（12）的激光源（10）包括增益介质（16），光输出耦合器（36F），空腔准直器（38A），衍射光栅（30），光栅束 54），以及梁附着器（56）。 衍射光栅（30）与空腔准直器（38A）间隔开，并且光栅（30）与光输出耦合器（36F）协作以限定外部空腔（32）。 光栅（30）包括位于光栅平面（42B）中的光栅面（42A）。 光束附着器（56）保持光栅束（54）并且允许光栅束（54）和光栅（30）有效地围绕位于枢转平面（50）的交叉点处的枢转轴线（33）枢转 ）和光栅平面（42B）。 如本文所提供的，衍射光栅（30）可围绕唯一的枢转轴线（33）枢转以相对于增益介质（16）移动衍射光栅（30），以连续调节外部空腔（32）的激光频率， 和输出光（12）的波长，使得输出光（12）无跳跃。

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