Measurement and Analysis on Complex Refraction Indices of Pear Pollen in Infrared Band
LI Le, HU Yi-hua*, GU You-lin, CHEN Wei, ZHAO Yi-zheng, CHEN Shan-jing
1. State Key Laboratory of Pulsed Power Laser, Electronic Engineering Institute, Hefei 230037, China 2. Key Laboratory of Electronic Restriction，Hefei 230037, China
Abstract：Pollen is an important part of bioaerosols, and its complex refractive index is a crucial parameter for study on optical characteristics and detection, identification of bioaer- osols. The reflection spectra of pear pollen within the 2.5~15μm waveband were measured by squash method. Based on the measured data, the complex refractive index of pear pollen within the waveband of 2.5 to 15 μm was calculated by using Kramers-Kroning (K-K) rela- tion, and calculation deviation about incident angle and different reflectivities at high and low frequencies were analyzed. The results indicate that18 degrees angle of incidence and different reflectivities at high and low frequencies have little effect on the results，and it is practicable to calculate the complex refractive index of pollen based on its reflection spectral data. The data of complex refractive index of pollen have some reference value for optical characteristics of pollen, detection and identification of bioaerosols.
Key words：Complex refractive index;Pear pollen;Infrared band
李 乐，胡以华*，顾有林，陈 卫，赵义正，陈善静 . 梨花粉红外波段复折射率测定与分析 [J]. 光谱学与光谱分析, 2015, 35(01): 89-92.
LI Le, HU Yi-hua*, GU You-lin, CHEN Wei, ZHAO Yi-zheng, CHEN Shan-jing . Measurement and Analysis on Complex Refraction Indices of Pear Pollen in Infrared Band . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(01): 89-92.
[1] FENG Ming-chun，XU Liang，GAO Min-guang, et al(冯明春，徐 亮，高闽光，等). Spectroscopy and Spectral Analysis(光谱学与光谱析)，2012, 32(12): 3193. [2] LAN Tian-ge, XIONG Wei, FANG Yong-hua, et al(兰天鸽, 熊 伟, 方勇华，等). Acta Optica Sinica(光学学报), 2010, 6(30): 16. [3] ZOU Bing-fang, ZHANG Yin-chao(邹炳芳, 张寅超). Infrared and Laser Engineering(红外与激光工程)，2006, 35(S3) 262. [4] CAI Shu-yao, ZHANG Pei, ZHU Ling-lin, et al(蔡淑窈，张 佩，朱玲琳，等). Acta Optica Sinica(光学学报), 2012, 32(5). [5] LIU Li, WANG Ti-jian, JIANG Zi-qiang, et al(刘 丽, 王体健，蒋自强，等). Acta Scientiae Circumstantiae(环境科学学报), 2012, 32(11): 2670. [6] Tuminello P S，Arakawa E T，Khare B N, et al. Appl. Opt., 1957，36(3)：2818. [7] Ross K F A, Billing Eve. J. Gen. Microbiol., 1997, 16: 418. [8] FENG Chun-xia, HUANG Li-hua, ZHOU Guang-chao, et al(冯春霞, 黄立华, 周光超，等). Chinese Journal of Lasers(中国激光), 2010, 37(10): 2592. [9] Lucarini V, Saarinen J J, Peiponen K E, et al. Tools for Data Analysis in Optics, Acustics, Signal Processing. Germany: Springer Verlag Berlin Heidelberg, 2005. 9. [10] Bohern C F, Huffman D R. Absorption and Scattering of Light by Small Particles. New York: John Wiley&sons，1983. 33. [11] DOU Zheng-wei, LI Xiao-xia, ZHAO Ji-jin(豆正伟, 李晓霞, 赵纪金). Acta Armamentarii(兵工学报), 2011，32(4)：498. [12] Palik E D. Handbook of Optical Constants of Solids. USA: Academic Press, 1985. [13] Gurton K P, Ligon D A, Kvavilashvili R. Appl. Opt., 2001, 40(25): 4444. [14] Rosenheim M S, Linker R. Journal of Quantitative Spectroscopy & Radiative Transfer, 2009, (110): 1147.
