{"title":"Holeburning Holography in Eu3+:Y2SiO5 crystal","authors":"H. Sasaki, K. Karaki, M. Mitsunaga, N. Uesugi","doi":"10.1364/shbs.1994.fd2","DOIUrl":"https://doi.org/10.1364/shbs.1994.fd2","url":null,"abstract":"Holeburning holography is an ultrahigh density image storage technique. Since the memory capacity is governed by the ratio of the inhomogeneous-to-homogeneous linewidths, 103~106 images can be recorded in a single sample spot. An extensive study on holebuming holography has been carried out by Wild et.al for organic dye-doped polymer samples1-4. On the other hand, holeburning holography has not been carried out for crystal samples, because there are few crystals exhibiting persistent holes. We have performed holeburning holography to record images for Eu3+:Y2SiO5 crystal which has been known for exhibiting persistent holes. Moreover, Eu3+:Y2SiO5 has other unique features5,6 such as narrow holewidth and high holeburning quantum efficiency. By using this crystal, we have also succeeded in real-time recording of a moving object.","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115798146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Surface Plasmon Imaging of Ultra-thin LB Films Prepared by Photoreactive Poly(vinyl ocatal acetal)s","authors":"S. Ito, Michiaki Mabuchi, Masahide Yamamoto","doi":"10.1364/shbs.1994.wd62","DOIUrl":"https://doi.org/10.1364/shbs.1994.wd62","url":null,"abstract":"Ultra-thin polymer films prepared by the Langmuir-Blodgett (LB) technique are one of fascinating materials in many fields of applications. Especially, polymer LB films have a lot of advantages as LB materials, for example, fewer pin-hole due to the amorphous character and thinness of each layer due to structural stabilization by the covalent linkage of the hydrophobic units. Furthermore, the chemical structure is easily modified by functional groups, providing various functions to the polymer LB films while keeping the excellent LB characters.","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116869060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Seki, T. Tamaki, Ryouhei Fukuda, M. Yokoi, Hideo Hiramatsu
{"title":"Photoinduced Alignment Behaviors of a Nematic Liquid Crystal on Azobenzene Langmuir-Blodgett Monolayers","authors":"T. Seki, T. Tamaki, Ryouhei Fukuda, M. Yokoi, Hideo Hiramatsu","doi":"10.1364/shbs.1994.wd41","DOIUrl":"https://doi.org/10.1364/shbs.1994.wd41","url":null,"abstract":"Trans/cis photoisomerization of azobenzene (Az) molecular films on the substrate is capable of inducing homeotropic/planar alignment changes of nematic liquid crystals (LCs). These photofunctional surfaces are called \"command surfaces.\" (Fig.1)1 The Langmuir-Blodgett (LB) technique provides importance information on the design of the surface layer. The LB film preparation condition should influence, to a large extent, the aligning behavior of the nematic LC as formerly proposed by Hiltrop and Stegemeyer.2 The present work is undertaken to elucidate the relationship between the conditions of the LB film conditions and the LC aligning behaviors. For Az LB film preparation, two sets of amphiphilic Az side chain polymers are employed, the backbone being (i) poly(vinyl alcohol) and (ii) poly(ethyleneimine). Polymeric materials are required to obtain highly photoreactive Az LB films. Single monolayers are prepared as the Az LB films throughout the investigation to avoid complexity of the film structure.","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115445263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"High Speed Time-Frequency Domain Holographic Storage","authors":"X. Shen, Y. Bai, R. Kachru","doi":"10.1364/shbs.1994.fd1","DOIUrl":"https://doi.org/10.1364/shbs.1994.fd1","url":null,"abstract":"Image storage in coherent time-domain optical memory (CTDOM) has been demonstrated successfully by using high-power pulsed lasers.1-2 Like photochemical hole burning3 and photorefractives,4 this time-domain approach to image storage has the potential of offering ultrahigh storage density and fast data access time. Unlike other optical memories, CTDOM is capable of providing ultrahigh image transfer rates and offers features such as in-memory image processing.5 However, difficulties arise in using the conventional time-domain approach to image storage, namely multiple images per frequency channel. For example, existing image composers such as an electronically-addressed spatial light modulators (SLM) do not have switching times fast enough to accommodate the required recording speeds (≳ MHz). High-power pulsed lasers are needed to make retrieved images detectable by electronic cameras. In addition, features such as random frame (or page) access and variable playback speed are not available with the conventional approach.","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126111262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Asatsuma, Nobuhiko Umezu, Y. Takemoto, Masahiko Kaneko
{"title":"Spectral Hole-Burning at Room Temperature in a Thin Film of SrFClxBr(1-x):Sm2+","authors":"T. Asatsuma, Nobuhiko Umezu, Y. Takemoto, Masahiko Kaneko","doi":"10.1364/shbs.1994.wd30","DOIUrl":"https://doi.org/10.1364/shbs.1994.wd30","url":null,"abstract":"One of the most attractive features of spectral hole-burning (SHB) is the possible its application to higher-density data storage media(1,2). Since the recent successes of SHB at room temperature in Sm2+-doped materials(3-6), the possibility of their practical use has become much larger. In that sense, inorganic materials containing Sm2+ are of interest to us(7).","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125167994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Mitsunaga, U. Wild, S. Altner, H. Sasaki, K. Karaki
{"title":"High-resolution nonlinear laser spectroscopy and its applications using rare-earth-doped crystals","authors":"M. Mitsunaga, U. Wild, S. Altner, H. Sasaki, K. Karaki","doi":"10.1364/shbs.1994.wc2","DOIUrl":"https://doi.org/10.1364/shbs.1994.wc2","url":null,"abstract":"Due to their ultralong dephasing times, rare-earth-ion-doped crystals can be a powerful tool for investigating small interactions undergoing in the crystal. Furthermore, narrow spectral holes along with persistent lifetimes make them an ideal candidate of high-density optical data storage. We present some recent topics in this area.","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128209121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Persistent Hole Burning and Holography in Anthraquinone Derivatives","authors":"E. Yagyu, T. Nishimura, M. Yoshimura","doi":"10.1364/shbs.1994.wd57","DOIUrl":"https://doi.org/10.1364/shbs.1994.wd57","url":null,"abstract":"We have reported persistent spectral hole burning (PHB) in anthraquinone derivatives. 1-3) Hole burning spectroscopy desires high resolution to detect narrow and shallow holes. Laser induced grating (Holography) technique is very effective for the investigation of a shallow hole, because it enables to detect a small signal without a large background. 4-6) In addition, we can achieve many holographic applications: 3D image storage and reconstruction, holographic memory, holographic computing, etc. However, we should note that hole signal represents a diffraction efficiency in holographic detection, not the absorption spectrum. Consequently, material characteristics, hole width, depth, area, Debye-Waller factor, etc., are not directly obtainable using holographic detection.","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123117596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Photochemical Hole Burning in the Soret Absorption Band of Zinc-tetrabenzoporphin Derivative by Two-photon Excitation","authors":"Martin Vacha, S. Machida, K. Horie","doi":"10.1364/shbs.1994.thf2","DOIUrl":"https://doi.org/10.1364/shbs.1994.thf2","url":null,"abstract":"Line-narrowing spectroscopic techniques, such as site-selection spectroscopy (fluorescence line narrowing) and spectral hole burning, have, to our knowledge, so far failed to eliminate the effect of inhomogeneous broadening of optical transitions to the second and/or higher excited singlet electronic states (Soret absorption band) of porphin-type dyes in low temperature matrices, mainly due to: (1) Perturbations between different electronic states and resulting broadening of the homogeneous spectral bands [1], and (2) Increasing density of vibronic states with increasing transition energy and lack of correlation between individual states of different molecules. However, in a class of porphin derivatives - free-base and metallotetrabenzoporhines (TBP) - the former effects are substantially reduced. As a result, quasiline structure of S0-S2 transitions of ZnTBP in an Ar matrix [2], and later of ZnTBP in supersonic expansions [3] were observed. Further, fluorescence from S2 state of ZnTBP [2,4] and recently also of Zn-tetratolyl-TBP [5] and Zn-TPP [6] were reported.","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129537328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. von Borczyskowski, J. Wrachtrup, J. Bernard, R. Brown, M. Orrit
{"title":"Single Spin-Single Molecule Detection","authors":"C. von Borczyskowski, J. Wrachtrup, J. Bernard, R. Brown, M. Orrit","doi":"10.1364/shbs.1994.wb4","DOIUrl":"https://doi.org/10.1364/shbs.1994.wb4","url":null,"abstract":"Recently magnetic resonance on single molecules has been successful. A detailed overview including investigations with steady state electron spin resonance and coherent experiments with single electron spins will be presented.","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129902461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Site-Selective Excitation Spectroscopy of Dye-doped Inorganic Amorphous Hosts Prepared by Sol-Gel Method","authors":"Y. Ichino, Y. Kanematsu, T. Kushida","doi":"10.1364/shbs.1994.wd11","DOIUrl":"https://doi.org/10.1364/shbs.1994.wd11","url":null,"abstract":"Dye-doped inorganic glasses prepared by a sol-gel method have received much interest during the last decade, especially for the application of optical media such as solid-state dye lasers and high-density optical memories.1-3 In order to obtain a preferable combination of host matrices and guest molecules for optical applications, it is important to know precisely about the electron-phonon interaction of the host-guest system. So far, we have experimentally determined the Debye-Waller factor, the site energy distribution function, and the density of states of low-frequency host vibrational modes weighted by the electron-phonon coupling strength in porphyrindoped polymers using a resonance fluorescence technique.4,5 In this study, sol-gel inorganic matrices, SiO2 and SiO2-TiO2, are examined using a similar method by employing a cationic laser dye, oxazine 4 perchlorate(ox4), as the optical center.","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133509612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}