A dual-signal detection laser frequency stabilization integrated optical circuit device
A technology for detecting lasers and integrating optical circuits, used in lasers, laser parts, circuits, etc., can solve problems such as RAM noise interference, achieve reliable and stable application, improve optical interface stability and anti-interference ability, and reduce RAM noise levels Effect
Active Publication Date: 2020-05-01
SUN YAT SEN UNIV
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Problems solved by technology
[0004] In order to overcome the defects of RAM noise interference in the above prior art, the present invention provides a dual-signal detection laser frequency stabilization integrated optical circuit device that can effectively suppress RAM noise interference
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[0019] The accompanying drawings are for illustrative purposes only and cannot be construed as limiting the patent;
[0020] In order to better illustrate this embodiment, some parts in the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product;
[0021] For those skilled in the art, it is understandable that some well-known structures and descriptions thereof may be omitted in the drawings.
[0022] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0023] The dual-signal detection laser frequency stabilization integrated optical circuit device includes: a laser frequency stabilization integrated optical platform 16, a PDH laser frequency stabilization optical circuit and a loop structure for RAM noise detection control.
[0024] Such as figure 1 As shown in FIG. 1 , it is a schematic structural diagram of a laser frequency stabilization...
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Abstract
A laser frequency stabilization integrated optical path device for dual-signal detection A laser frequency stabilizing device comprise a laser, an electro-optical modulator, a laser frequency stabilizing integrate optical platform, a RAM signal photodetector and a PDH signal photodetector, wherein that integrated optical platform comprises a platform base, a collimation system, a beam splitting isolation element, a lens, a first mirror, a second mirror and an ultrastable cavity; A laser signal passes through an electro-optical modulator in turn, Collimation system and beam splitting isolationelement, A laser signal is separated by a beam-splitting isolation element, A light beam is reflect into a RAM signal photodetector, and another light beam is reflected through a lens, a first mirrorand a second mirror, wherein a part of that laser signal is transmitted into an ultra-stable cavity to complete cavity coupling, and the rest of the laser signal is returned to a beam splitting isolation element and is reflected into a PDH signal photodetector. The invention effectively improves the portability and the anti-interference ability of the optical platform, and realizes the maximum reduction of the noise level of the RAM.
Description
technical field [0001] The invention relates to the field of laser frequency stabilization devices, and more specifically, to a dual-signal detection laser frequency stabilization integrated optical circuit device. Background technique [0002] Laser frequency stabilization technology refers to locking the optical frequency of the laser on an ultra-stable external frequency reference through feedback control to make it meet certain frequency stability requirements. In a non-laboratory environment such as a space environment or outdoors, the laser frequency stabilization system requires a specific mode-matching optical system to shape and align the incident laser beam, so it needs sufficient mechanical strength and stability to withstand vibration in a non-laboratory environment or impact noise interference. In addition, there is residual amplitude modulation noise (Residual Amplitude Modulation—RAM) in the optical system. In the optical system, the noise signal of RAM and t...
Claims
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IPC IPC(8): H01S3/13H01S3/139
CPCH01S3/1305H01S3/139
Inventor 骆颖欣段会宗李祝薛超叶贤基梅健伟罗俊覃璇
Owner SUN YAT SEN UNIV