Determination of photo-induced changes in linear optical coefficients by the Z-scan technique

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• JOSA B, Vol. 26 Issue 11, pp.2171-2175 (2009)
• Fedus, K; Boudebs, G
• We introduce a Z-scan technique as a tool to characterize small phase shift (<1 rad) and photodarkening, both effects induced inside photosensitive materials by light...

Improved model-based infrared reflectrometry for measuring deep trench structures

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• JOSA A, Vol. 26 Issue 11, pp.2327-2335 (2009)
• Zhang, Chuanwei; Liu, Shiyuan; Shi, Tielin; Tang, Zirong
• Model-based infrared reflectrometry (MBIR) has been introduced recently for characterization of high-aspect-ratio deep trench structures in microelectronics. The success of this...

A generalized reference-plane-based calibration method in optical triangular profilometry

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• Optics Express, Vol. 17 Issue 23, pp.20735-20746 (2009)
• Cui, Suochao; Zhu, Xiao
• In this paper, a generalized reference-plane-based calibration method is proposed in optical triangular profilometry by exploring projection ray tracing method and image ray tracing...

Demonstration of an optical frequency synthesizer with zero carrier-envelope-offset frequency stabilized by the direct locking method

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• Optics Express, Vol. 17 Issue 23, pp.20920-20926 (2009)
• Kim, Eok B; Lee, Jae-hwan; Trung, Luu Tran; Lee, Wong-Kyu; Yu, Dai-Hyuk; Ryu, Han Young; Nam, Chang Hee; Park, Chang Yong
• We developed an optical frequency synthesizer (OFS) with the carrier-envelope-offset frequency locked to 0 Hz achieved using the “direct locking method.” This method differs from a...

High resolution interferometer with multiple-pass optical configuration

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• Optics Express, Vol. 17 Issue 23, pp.21042-21049 (2009)
• Ahn, Jeongho; Kim, Jong-Ahn; Kang, Chu-Shik; Kim, Jae-Wan; Kim, Soohyun
• An interferometer having fourteen times higher resolution than a conventional single-pass interferometer has been developed by making multiple-pass optical path. To embody the...

Two-wavelength interferometry: extended range and accurate optical path difference analytical estimator

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• JOSA A, Vol. 26 Issue 12, pp.2503-2511 (2009)
• Houairi, Kamel; Cassaing, Frédéric
• Two-wavelength interferometry combines measurement at two wavelengths λ₁ and λ₂ in order to increase the unambigous range (UR) for the measurement of an optical...

Stokes polarimeter optimization in the presence of shot and gaussian noise

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• Optics Express, Vol. 17 Issue 23, pp.21240-21249 (2009)
• Lara, David; Paterson, Carl
• An error minimization method is presented for Stokes polarimeters applicable when the detected signals are affected by a combination of shot and Gaussian noise. The expectation of...

Device based in-chip critical dimension and overlay metrology

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• Optics Express, Vol. 17 Issue 23, pp.21336-21343 (2009)
• Kim, Young-Nam; Paek, Jong-Sun; Rabello, Silvio; Lee, Sangbong; Hu, Jiangtao; Liu, Zhuan; Hao, Yudong; McGahan, William
• The use of optical metrology techniques in process control for microelectronic manufacturing has become widespread. These techniques are fast and non-destructive, allowing a higher...

Rapid Mueller matrix polarimetry based on parallelized polarization state generation and detection

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• Optics Express, Vol. 17 Issue 24, pp.21396-21407 (2009)
• Tripathi, Santosh; Toussaint, Kimani C
• We present rapid Mueller matrix polarimetry that can extract twelve Muller matrix elements from a single intensity image in real time and with high spatial resolution. This is...

Adaptive correction method of inhomogeneous light intensity for digital speckle interferometry by subtraction

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• Applied Optics, Vol. 48 Issue 33, pp.6426-6431 (2009)
• Gu, Bin; Yang, Dexing; He, Dongsheng; Guo, Shuai; Yang, Zhichun; Fang, Zhiqiang
• In digital speckle interferometry, subtracted fringe patterns are always influenced by inhomogeneous light that is reflected from the tested object and received by the CCD. In this...

Subdivision and direction recognition of λ/16 of orthogonal fringes for nanometric measurement

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• Applied Optics, Vol. 48 Issue 33, pp.6479-6484 (2009)
• Hu, Haijiang; Qiu, Xiaoqian; Wang, Jing; Ju, Aisong; Zhang, Yunbo
• Subdivision is one of the essential methods to improve the measurement resolution of optical instruments. A new method is proposed to solve λ/16 bidirectional subdivision and...

Two-color-absorption sensor for time-resolved measurements of gasoline concentration and temperature

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• Applied Optics, Vol. 48 Issue 33, pp.6492-6500 (2009)
• Pyun, Sung Hyun; Porter, Jason M; Jeffries, Jay B; Hanson, Ronald K; Montoya, Juan C; Allen, Mark G; Sholes, Kevin R
• A midinfrared absorption sensor for crank-angle-resolved in-cylinder measurements of gasoline concentration and gas temperature for spark-ignition internal-combustion engines is...

The general theory of phase shifting algorithms

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• Optics Express, Vol. 17 Issue 24, pp.21867-21881 (2009)
• Servin, M; Estrada, J C; Quiroga, J A
• We have been reporting several new techniques of analysis and synthesis applied to Phase Shifting Interferometry (PSI). These works are based upon the Frequency Transfer Function...

Ultrabroadband optical chirp linearization for precision metrology applications

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• Optics Letters, Vol. 34 Issue 23, pp.3692-3694 (2009)
• Roos, Peter A; Reibel, Randy R; Berg, Trenton; Kaylor, Brant; Barber, Zeb W; Babbitt, Wm Randall
• We demonstrate precise linearization of ultrabroadband laser frequency chirps via a fiber-based self-heterodyne technique to enable extremely high-resolution, frequency-modulated cw...