Results 281 to 290 of about 583,572 (316)
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Modulated cross-phase-modulation spectra
OSA Annual Meeting, 1993When a weak probe and a strong pump pulses propagate together in a material, coupled interactions occur through the third order nonlinearity. This process leads to the self-phase-modulation (SPM) and cross-phase-modulation (XPM). The spectral shift of XPM can be controlled by adjusting the time delay between the pump and probe pulses.1 When the pump ...
Q. Z. Wang +4 more
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Conversion of amplitude modulation to phase modulation
International Journal of Electronics, 1977The paper begins with a review of the work in the field of AM—PAI conversion by the injection synchronization technique. It presents a detailed theoretical investigation of the performance of such a system, and presents a now system of injection synchronization.
B. N. BISWAS, S. K. RAY, P. BANERJEE
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Organic polymer phase modulator
Optical Society of America Annual Meeting, 1991There has been an increasing interest in using organic polymers to implement optical waveguide devices. Organic polymers have low intrinsic losses, and devices built with these materials can easily be fabricated using standard VLSI technology. However, most organic polymers have a glass transition temperature (T g ) of less than 100°C.
Yuen, S.F. +2 more
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Achromatic optical phase shifter–modulator
Optics Letters, 2001We propose and demonstrate, theoretically and experimentally, a novel achromatic optical phase shifter-modulator based on a frequency-domain optical delay line configured to maintain zero group delay as variable phase delay is generated by means of tilting a mirror.
Zvyagin, A.V., Sampson, David
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Modulated phase-shifting for 3D scanning
2008 IEEE Conference on Computer Vision and Pattern Recognition, 2008We present a new 3D scanning method using modulated phase-shifting. Optical scanning of complex objects or scenes with significant global light transport, such as subsurface scattering, interreflections, volumetric scattering, etc. is a difficult task since the direct surface reflection will be mixed with the global illumination.
Chen, T. +2 more
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Modulating ionization through phase control
Physical Review A, 1992We present a theory of modulating ionization by controlling the phases of incident laser fields. Specific calculations have been performed for the Na atom using the density-matrix equations. Significant modulation of the ion signal can be obtained by choosing the appropriate combinations of laser intensities and frequencies, in resonant as well as ...
T. NAKAJIMA +3 more
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Dynamic Transmissive Metasurface for Broadband Phase‐Only Modulation Based on Phase‐Change Materials
Laser and Photonics Reviews, 2023Mingjie Zhang, Tianhua Feng
exaly