Design of semiconductor laser driver circuit and analysis of loop noise -suppression

Tao, 吴涛 Wu; Tao, 庞涛 Pang; Yuquan, 汤玉泉 Tang; Pengshuai, 孙鹏帅 Sun; Zhirong, 张志荣 Zhang; Qiming, 徐启铭 Xu

doi:10.3788/irla20190386

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“…The separation between the light source module and the interference optical path prevents stray light from entering the interference optical path and affecting the result of interference measurement. In the short coherent light source module, the laser enters the system after collimating through the collimator [11]. Because the laser beam of semiconductor is gaussian beam, the laser beam is visible as quasi-direct light in the short optical path.…”

Section: Analysis Of Key Components In Short Coherent Light Source Sy...mentioning

confidence: 99%

Research on the current modulated short coherent light source based on semiconductor laser

Zhang

2023

3rd International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2023)

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The traditional interferometry only uses laser light source, because of the ultra-high coherence rate of laser, there will be great crosstalk in the detection of special optical devices such as parallel plate and prism. LED, tungsten lamp and other traditional light sources are not suitable as ideal light sources for testing interferometers of special optical components because of their poor collimation, poor laser intensity stability and short coherence length. The short coherence superposition laser illumination source has the advantages of good directivity, high brightness and moderate coherence length, so it is an ideal light source for special components to detect interferometers. As a new type of semiconductor device, laser is widely used in people's life, but its problems are also obvious. In this paper, modulation of short coherent light source based on photoelectric effect is studied. The paper initially introduces the realization and optimization of the short coherent light source, then analyzes the longitudinal modeling of the semiconductor laser, and calibrates the semiconductor laser. Finally, based on the photoelectric effect, a short coherent light source is proposed to replace conventional electroluminescent devices with certain reliability, low cost and stability.

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Section: Analysis Of Key Components In Short Coherent Light Source Sy...mentioning

confidence: 99%

Research on the current modulated short coherent light source based on semiconductor laser

Zhang

2023

3rd International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2023)

View full text Add to dashboard Cite

show abstract

Design of semiconductor laser driver circuit and analysis of loop noise -suppression

Cited by 1 publication

References 0 publications

Research on the current modulated short coherent light source based on semiconductor laser

Research on the current modulated short coherent light source based on semiconductor laser

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