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Compact digital holoscope with dual wavelength

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Compact digital holoscope with dual wavelength
นักวิจัย : Di, Jianglei , Zhao, Jianlin , Asundi, Anand Krishna
คำค้น : DRNTU::Science::Physics::Optics and light
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Di, J., Zhao, J., & Asundi, A. K. (2012). Compact digital holoscope with dual wavelength. Proceedings of SPIE-Information Optics and Optical Data Storage II, 8559. , http://hdl.handle.net/10220/10059 , http://dx.doi.org/10.1117/12.2001862
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : -
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Digital holography allows fast, nondestructive, full-field 3D measurement of reflecting as well as transmitting objects. It is a well-established two-step method of digital recording and numerical reconstruction of the full complex field of wavefront. It has found applications in diverse fields, such as micro-optics and MEMS metrology, cell imaging and particle characterization. However, for quantitative phase measurement there is 2π by phase ambiguities that limit measurements of optical path lengths to the wavelength of the illumination light. For continuous profiles, phase unwrapping is used to overcome the phase jumps. One approach is to use a synthetic wavelength using two lasers with different wavelengths. This synthetic wavelength would depend on the wavelengths of the two sources and thus can be tuned by selecting appropriate sources. In this paper, this concept is integrated into the compact digital holoscope which provides the system with the capability of measuring over a range of step heights from the nanometer to the micrometer realm. Applications of the system for reflecting geometries is discussed.

บรรณานุกรม :
Di, Jianglei , Zhao, Jianlin , Asundi, Anand Krishna . (2555). Compact digital holoscope with dual wavelength.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Di, Jianglei , Zhao, Jianlin , Asundi, Anand Krishna . 2555. "Compact digital holoscope with dual wavelength".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Di, Jianglei , Zhao, Jianlin , Asundi, Anand Krishna . "Compact digital holoscope with dual wavelength."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Di, Jianglei , Zhao, Jianlin , Asundi, Anand Krishna . Compact digital holoscope with dual wavelength. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.