本文選題：光譜學 + 光譜濾波��； 參考：《中國激光》2017年08期

【摘要】：基于雙多層介質(zhì)膜衍射(MLD)光柵的超窄帶光譜濾波系統(tǒng)可以獲得普通窄帶濾光片無法實現(xiàn)的亞納米級超窄光譜濾波寬度,利用該系統(tǒng)有望極大地提高激光回光探測系統(tǒng)的信噪比和抗干擾能力。設計了一套基于雙MLD色散補償光柵的超窄帶光譜濾波系統(tǒng),使用CODE V軟件對系統(tǒng)像差進行理論仿真,發(fā)現(xiàn)系統(tǒng)像差可忽略不計;使用Matlab軟件對系統(tǒng)的濾波線寬和有效能量透過率進行理論仿真,為解決實際濾波問題時,根據(jù)實際需求選擇最優(yōu)系統(tǒng)結構參數(shù)提供了較完整的理論基礎。最后,在實驗室采用國產(chǎn)多層介質(zhì)膜光柵,在1064nm中心波長段,成功將光譜半峰全寬(FWHM)為0.3nm的入射激光轉(zhuǎn)換為光譜FWHM為0.03nm的出射激光。
[Abstract]:The ultra-narrow band spectral filtering system based on double multilayer dielectric film diffraction (MLD) grating can obtain the sub-nanoscale ultra-narrow spectral filter width that ordinary narrow band filter cannot realize. The system is expected to greatly improve the signal-to-noise ratio (SNR) and anti-jamming ability of the laser backlight detection system. An ultra-narrow band spectral filtering system based on double MLD dispersion compensation grating is designed. The aberration of the system is simulated by code V software, and it is found that the aberration of the system is negligible. The theoretical simulation of the filtering linewidth and effective energy transmittance of the system is carried out by using Matlab software, which provides a complete theoretical basis for selecting the optimal system structure parameters according to the actual demand when solving the problem of practical filtering. Finally, at the center wavelength of 1064nm, the incident laser with half width of spectral peak (FWHM) as 0.3nm is converted into an outgoing laser with spectrum FWHM as 0.03nm at the center wavelength of 1064nm using domestic multilayer dielectric film grating.
【作者單位】： 中國工程物理研究院應用電子學研究所;中國工程物理研究院研究生院;
【基金】：中國工程物理研究院高能激光科學與技術重點實驗室基金
【分類號】：TN25;TN713

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