IN-SITU OPTICAL MEASUREMENT USING OPTICAL FIBERS FOR A-SIH ULTRA-THIN FILMS - THEORETICAL AND NUMERICAL-ANALYSIS

被引：0
作者：
LEBLANC, F
MAEDA, Y
MINEMURA, T
机构：
[1] Hitachi Research Laboratory, Hitachi Ltd, Hitachi-shi
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1993年 / 32卷 / 10B期
关键词：
OPTICAL FIBER; THIN FILM; A-SH; ABSORPTION;
D O I：
10.1143/JJAP.32.L1546
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A new in situ optical characterization technique, consisting of measuring the transmittance of a multimode optical fiber when depositing a hydrogenated amorphous silicon (a-Si:H) thin film on the unclad core, is theoretically and numerically analyzed. Due to a large interferential effect, an apparent increase of the optical gap occurs when decreasing the film thickness below 10 nm. The same effect allows the measurement of the absorption coefficient at a given wavelength in the mid-gap region, lower than 5 cm-1 for 20-nm-thick films. The method is a promising tool to investigate the Density of States (DOS) of a-Si:H ultra-thin films.
引用
收藏
页码：L1546 / L1548
页数：3
相关论文
共 31 条
  • [11] Efficient Sub-wavelength Plasmonic Superconducting Photodetectors in Ultra-Thin Planar Waveguides and in Optical Fibers
    V. A. Popescu
    Journal of Superconductivity and Novel Magnetism, 2013, 26 : 2563 - 2571
  • [12] Measurement of sub-nanometer lubricant films using ultra-thin film interferometry
    Glovnea, RP
    Forrest, AK
    Olver, AV
    Spikes, HA
    TRIBOLOGY LETTERS, 2003, 15 (03) : 217 - 230
  • [13] Measurement of Sub-Nanometer Lubricant Films Using Ultra-Thin Film Interferometry
    R.P. Glovnea
    A.K. Forrest
    A.V. Olver
    H.A. Spikes
    Tribology Letters, 2003, 15 : 217 - 230
  • [14] In-situ high temperature study of ceramics and ceramic ultra-thin films using a x-ray diffractometer with a parabolic multilayer mirror
    Roebben, G
    Zhao, C
    Duan, RG
    Vleugels, J
    Heyns, M
    Van der Biest, O
    EURO CERAMICS VII, PT 1-3, 2002, 206-2 : 775 - 778
  • [15] A New Method for In-Situ Measurement of Internal Solitary Waves Based on the Stimulated Raman Scattering in Optical Fibers
    Jing Wang
    Meng Zhang
    Xiangying Miao
    Zhonghao Yang
    Zhixin Li
    Dianheng Huo
    Hongli Miao
    Journal of Ocean University of China, 2023, 22 : 658 - 664
  • [16] A New Method for In-Situ Measurement of Internal Solitary Waves Based on the Stimulated Raman Scattering in Optical Fibers
    Wang, Jing
    Zhang, Meng
    Miao, Xiangying
    Yang, Zhonghao
    Li, Zhixin
    Huo, Dianheng
    Miao, Hongli
    JOURNAL OF OCEAN UNIVERSITY OF CHINA, 2023, 22 (03) : 658 - 664
  • [17] Anomalous thickness-dependent optical energy gap of ALD-grown ultra-thin CuO films
    Tripathi, T. S.
    Terasaki, I.
    Karppinen, M.
    JOURNAL OF PHYSICS-CONDENSED MATTER, 2016, 28 (47)
  • [18] Nonlinear optical properties of poly (vinyl alcohol) thin films doped with in-situ WSe2/rGO composite
    Zu, Yanli
    He, Chunying
    Liu, Dongmei
    Chen, Lan
    Li, Wanlu
    Zhang, Wang
    OPTICS AND LASER TECHNOLOGY, 2021, 142
  • [19] Refractive index measurement of silicon thin films using slab optical waveguides
    Takezawa, N
    Kato, I
    Nojima, S
    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1997, 36 (02): : 920 - 925
  • [20] Temperature-induced transition of the diffusion mechanism of n-hexane in ultra-thin polystyrene films, resolved by in-situ Spectroscopic Ellipsometry
    Ogieglo, Wojciech
    Wormeester, Herbert
    Wessling, Matthias
    Benes, Nieck E.
    POLYMER, 2013, 54 (01) : 341 - 348
1234