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A double-layered xerographic photoreceptor has been investigated to obtain high sensitivity in the near-infrared region. The immersion of sublimed chloroaluminum phthalocyanine chloride (AlClPcCl) in an organic solvent was found to induce an absorption peak shift toward the long wavelength region. The new double-layered photoreceptor, in which AlClPcCl and a pyrazoline derivative were employed in the charge generation layer and charge transport layer, respectively, showed a high sensitivity, equivalent to 1.6 cm2/μJ, in the GaAlAs laser diode emission region.

This paper proposed an X-band 6-bit passive phase shifter (PS) designed in 0.18 m silicon-on-insulator (SOI) CMOS technology, which solves the key problem of high integration degree, low power, and a small size T/R module. The switched-topology is employed to achieve broadband and flat phase shift. The ESD circuit and driver are also integrated in the PS. It covers the frequency band from 7.5 to 10.5 GHz with an EMS phase error less than 7.5 ı . The input and output VSWRs are less than 2 and the insertion loss (IL) is between 8-14 dB across the 7.5 to 10.5 GHz, with a maximum IL difference of 4 dB. The input 1 dB compression point (IP 1dB / is 20 dBm.

Photorefractive polymers with the same electro-optic effect were fabricated to investigate the photorefractive effects in different photoconductive systems. The photoconduction in the polymers was varied by the addition of squarylium dye to diethylaminobenzaldehyde-diphenylhydrazone (DEH), by the formation of a charge-transfer complex between tetracyanoquinodimethane and DEH, and by the thermal decomposition of DEH. The largest photorefractive effect was observed in the thermally decomposed polymer among these polymers. A diffraction efficiency of 1.1% and a beam-coupling gain coefficient of 10 cm−1 were achieved in a 34.9 V/μm dc electric field.

Porphine derivatives containing four alkyl chains with unpolymerizable or polymerizable hydrophilic end groups in peripheral positions were incorporated into polymerizable lipid bilayers. Hole burning of the porphine derivative which was copolymerized in the liposome environment required much smaller energies for the hole-burning photochemistry as compared to monomolecularly dispersed porphine in a polymerized liposome environment. The distribution of the nonpolymerizable porphine was changed upon the polymerization of the lipid matrix, whereas the polymerizable porphine guest molecule maintained its dispersed state. This is, to our knowledge, the first system that allows the preparation of very highly concentrated host-guest systems (>10~2 mol/L) suitable for hole burning.