Laser mode competition effects on output optical pulse high-frequency noise
| Autor: | Shi-yu Wang, Li Bingbin, Wu Mengyao, De-fang Cai, Zhen Guo, Peng-fei Qu |
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| Rok vydání: | 2019 |
| Předmět: |
Physics
business.industry Frequency band Fast Fourier transform Physics::Optics 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Pulse (physics) Power (physics) 010309 optics Optics Amplitude law Optical cavity 0103 physical sciences Electrical and Electronic Engineering 0210 nano-technology business Noise (radio) |
| Zdroj: | Optik. 183:323-328 |
| ISSN: | 0030-4026 |
| DOI: | 10.1016/j.ijleo.2019.02.090 |
| Popis: | High-frequency noise in an output optical pulse severely affects amplitude stability and pulse within the high-power acousto-optic Q-switched diode-pumped solid-state laser. In this study, we assessed the output optical pulse via fast Fourier transform (FFT) method under high pump power conditions to find that high-frequency noise in the output optical pulse is chiefly concentrated in the 0.25–1.8 GHz frequency band. High-frequency noise within 0.25–1 GHz and 1–1.8 GHz is mainly caused by high transverse and multi-longitudinal modes in the laser resonator. Our experimental and theoretical analysis results are in close accordance; both indicate that mode competition is the main factor affecting the output optical pulse high-frequency noise. |
| Databáze: | OpenAIRE |
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