Q-adjusting semiconductor laser constant-power output control device
An output control and optical power technology, applied in semiconductor lasers, devices for controlling laser output parameters, lasers, etc., can solve problems such as small adjustable range, low control accuracy, and impact on pump life.
Active Publication Date: 2017-06-13
深圳瑞丰恒激光技术有限公司
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Problems solved by technology
The adjustable range of this solution is relatively small, and it will affect the life of the pump, so the circuit aging is relatively fast, the control accuracy is relatively low, the flexibility is poor, the cost is high, and the long-term stability is relatively poor
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0020] figure 1 A schematic structural diagram of a...
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The invention provides a Q-adjusting semiconductor laser constant-power output control device. The Q-adjusting semiconductor laser constant-power output control device monitors an error between the output power of a laser and target power in real time, traverses one or more of an energy storage time parameter, a frequency doubling temperature parameter and / or a pumping current parameter when the absolute value of the error is greater than a preset adjusting threshold value, and uses the parameter having the luminous power quantization error lower than the adjusting threshold value to adjust the laser so as to control the error between the output power of the laser and the target power. The device achieves constant-power laser output by monitoring and adjusting the luminous power in real time and automatically optimizing the parameters without artificial participation, has the advantages of being low in cost, high in flexibility and control precision and the like and is more suitable for certain applications having very strict marking and cutting requirements and the like.
Description
technical field [0001] The invention relates to the technical field of semiconductor lasers, in particular to a constant power output control device of a Q-switched semiconductor laser. Background technique [0002] The emergence and application of laser Q-switching technology is a major breakthrough in the history of laser development. Through Q-switching technology, the general output continuous or pulsed laser energy is compressed into extremely narrow pulses for emission, so that the peak power of the laser can be increased by several orders of magnitude. As a result, semiconductor lasers with high power and high repetition rate are widely used in many fields such as material processing, laser medicine, laser ranging, radar, guidance, high-speed photography, high-resolution spectroscopy and nuclear fusion. Frequency doubling technology is a second-order nonlinear optical effect, which is widely used in laser technology. Q-switching technology not only greatly increases...
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Login to View More IPC IPC(8): H01S5/06
CPCH01S5/0615
Inventor 陶孝收胡德洲郑全昌黄梓能李嘉雄
Owner 深圳瑞丰恒激光技术有限公司