Institute for Laser Science

Institute for Laser Science

The Institute for Laser Science is a department of the University of Electro Communications, located near Tokyo, Japan.

Location

The Institute for Laser Science is located at 1-5-1 Chofugaoka, Chofu, Tokyo, 182-8585, Japan. The coordinates are (+35.657952,+139.54128).

Access:
* By train: Keiō Line, Chofu station (about 20 min from Shinjuku by "express"); exit to North, 5 min walk North until road 20, cross road 20, walk left and enter the campus of University of Electro Communications tgrough the Sei-mon (main gate), walk North and West, pass through the "Naka-mon" (central gate) and walk East; the last building at the left hand side.

* By car: Chuo higway, Exit "Chofu", (toward Shinjuku), one block East by road 20, then left (North) at the first traffic signal, then first right through "Nishi-mon" (West gate).

* By walking: from Chofu airport, walk East until road 12 and turn right (South); after to cross Nogawa river and then to pass under the Chuo highway, look left for the "Nishi-mon"(West gate) and enter there. (20 min to walk)

History and achievements

Established in 1980, the Institute specializes mainly in improving the performance of gas lasers, especially excimer lasers. Between 1990 and 2005, the Institute developed fiber disk lasers,
disk laser (active mirror)cite journal| url=http://bookstore.spie.org/index.cfm?fuseaction=DetailPaper&ProductId=143686&coden=PSISDG
author=K. Ueda| coauthors=N. Uehara| title=Laser-diode-pumped solid state lasers for gravitational wave antenna| journal=Proceedings of SPIE| volume=1837| pages=336–345| year=1993| doi=10.1117/12.143686
] and the concept of power scaling. Ultra-low loss mirror was developedcite journal
url=http://www.ils.uec.ac.jp
author=N.Uehara
coauthors=A.Ueda, K.Ueda, H.Sekiguchi, T.Mitake, K.Nakamura, N.Kitajima, and I.Kataoka.
title=Ultralow-loss mirror of the parts-in-106 level at 1064 nm
journal=Optics Letters
volume=20
pages=530–532
year=1995
] aiming application for high power lasers (1995).

Since 2000, its main research directions have been in the areas of solid state lasers, fiber lasers and ceramics. Since then, the Institute has carried out experiments with quantum reflection of cold excited neon atoms from silicon surfaces.cite journal
url=http://prola.aps.org/abstract/PRL/v86/i6/p987_1
author= F.Shimizu
comment=6
title=Specular Reflection of Very Slow Metastable Neon Atoms from a Solid Surface
journal=PRL
volume=86
pages=987–990
year=2001
doi=10.1103/PhysRevLett.86.987
] cite journal
url=http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PLRAAN000071000005052901000001&idtype=cvips&gifs=yes
author=H.Oberst
coauthors=Y.Tashiro, K.Shimizu, F.Shimizu
title=Quantum reflection of He* on silicon
journal=PRA
volume=71
pages=052901
year=2005
doi=10.1103/PhysRevA.71.052901
]

The institute has also performed the first experiments with quantum reflection cite journal
url=http://prola.aps.org/abstract/PRL/v86/i6/p987_1
author= F.Shimizu
comment=6
title=Specular Reflection of Very Slow Metastable Neon Atoms from a Solid Surface
journal=PRL
volume=86
pages=987–990
year=2001
doi=10.1103/PhysRevLett.86.987
] of cold atoms from Si surfaceand, in particular, ridged mirrors cite journal
comment=8
url=http://jpsj.ipap.jp/link?JPSJ/71/5/
author= F.Shimizu
coauthors=J. Fujita
title=Giant Quantum Reflection of Neon Atoms from a Ridged Silicon Surface
journal=Journal of the Physical Society of Japan
volume=71
pages=5–8
year=2002
doi=10.1143/JPSJ.71.5
] for cold atoms and the interpretation as Zeno effect.cite journal
url=http://annex.jsap.or.jp/OSJ/opticalreview/TOC-Lists/vol12/12e0363tx.htm
author= D.Kouznetsov
coauthors= H.Oberst
title=Reflection of Waves from a Ridged Surface and the Zeno Effect
journal=Optical Review
volume=12
pages=1605–1623
year=2005
doi=10.1007/s10043-005-0363-9
]

Y. 2003.Development of fundamental concepts of propagation and scattering of waves.cite journal
comment=8
url=http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PLRAAN000072000001013617000001&idtype=cvips&gifs=yes
free=http://www.ils.uec.ac.jp/~dima/PhysRevA_72_013617.pdf
author= D.Kouznetsov
coauthors=H.Oberst
title=Scattering of waves at ridged mirrors.
journal=PRA
volume=72
pages=013617
year=2005
doi=10.1103/PhysRevA.72.013617
] cite journal
comment=7
url=http://annex.jsap.or.jp/OSJ/opticalreview/TOC-Lists/vol12/12e0363tx.htm
author= D.Kouznetsov
coauthors= H.Oberst
title=Reflection of Waves from a Ridged Surface and the Zeno Effect
journal=Optical Review
volume=12
pages=1605–1623
year=2005
doi=10.1007/s10043-005-0363-9
]

In 2004, the Institute developed the first microchip atomic trap." [http://www.ils.uec.ac.jp/Eatomoptics.html Atom Optics, Coherence and Ultra Cold Atoms] " on the website of ILS.] cite journal
url=http://www.ils.uec.ac.jp
author= M.Horikoshi
coauthors=K.Nakagawa
title=Atom chip based fast production of Bose-Einstein condensat
journal=Applied Physics B
volume=83
pages=363–366
year=2006
doi=10.1007/s00340-005-2083-z
]

Current research

*Laser science, solid-state lasers http://wwwü.ils.uec.ac.jp/Essl.html,
in particular, generation of very short pulses http://www.ils.uec.ac.jp/Ehighintensity.html] , fiber lasers
* Frequency stabilization, http://www.ils.uec.ac.jp/Egravity.html
* Power scaling [cite journal| author=D. Kouznetsov|coauthors= J.-F. Bisson, J. Dong, and K. Ueda
title=Surface loss limit of the power scaling of a thin-disk laser| journal=JOSAB| volume=23| issue=6| pages=1074–1082| year=2006| url=http://josab.osa.org/abstract.cfm?id=90157
free= http://www.ils.uec.ac.jp/~dima/disk.pdf
doi=10.1364/JOSAB.23.001074
] cite journal
author=D.Kouznetsov
coauthors=J.-F.Bisson, J.Dong, K.Ueda
title=Scaling laws of a thin disk lasers
url=http://www.ils.uec.ac.jp/~dima/diskpreprint.pdf
journal= Preprint ILS-UEC
year=2007
format=dead link|date=June 2008 – [http://scholar.google.co.uk/scholar?hl=en&lr=&q=author%3A+intitle%3AScaling+laws+of+a+thin+disk+lasers&as_publication=Preprint+ILS-UEC&as_ylo=2007&as_yhi=2007&btnG=Search Scholar search]
] of disk lasers and limits for density of excitations in laser materials cite journal
author=J.-F.Bisson
coauthors=D.Kouznetsov, K.Ueda, T.Fredrich-Thornton, K.Petermann, and G.Huber
title= Switching of emissivity and photoconductivity in highly doped Yb3+:Y2O3 and Lu2O3 ceramics.
journal=Applied Physics Letters
volume=90
pages=201901
year=2007
doi=10.1063/1.2739318
url=http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=APPLAB000090000020201901000001&idtype=cvips&gifs=yes
free=http://www.ils.uec.ac.jp/~dima/ApplPhysLett_90_201901.pdf
] .
*Application of causality and McCumber relation in physics of laser materialscite journal
url=http://col.org.cn/getArticle.aspx?id=OJ070715000250D0GcIf
free=http://www.ils.uec.ac.jp/~dima/2007mc.pdf
author=D.Kouznetsov
coauthor=
title=Broadband laser materials and the McCumber relation
journal=Chinese Optics Letters
year=2007
volume=5 Supplement
pages=S240–S242
format=dead link|date=June 2008 – [http://scholar.google.co.uk/scholar?hl=en&lr=&q=author%3A+intitle%3ABroadband+laser+materials+and+the+McCumber+relation&as_publication=%5B%5BChinese+Optics+Letters%5D%5D&as_ylo=2007&as_yhi=2007&btnG=Search Scholar search]
] cite journal
author=D.Kouznetsov
title=Efficient diode-pumped Yb:Gd2SiO5 laser: Comment.
journal=Applied Physics Letters
volume=90
pages=066101
year=2007
url=http://link.aip.org/link/?APL/90/066101 |free=http://www.ils.uec.ac.jp/~dima/ApplPhysLett_90_066101.pdf
doi=10.1063/1.2435309
] .
* Coherent addition cite journal
author=D.Kouznetsov
coauthors=J.F.Bisson. A.Shirakawa, K.Ueda
url=http://annex.jsap.or.jp/OSJ/opticalreview/TOC-Lists/vol12/12f0445tx.htm
title=Limits of Coherent Addition of Lasers: Simple Estimate]
journal=Optical Review
volume=12
issue=6
pages=445–­44
year=2005
free=http://www.ils.uec.ac.jp/~dima/CoupledOptRev.pdf
doi=10.1007/s10043-005-0445-8
] of fiber lasers.
* Random lasers
* Self-pulsation cite journal|url=http://www.iop.org/EJ/abstract/-search=15823442.1/1751-8121/40/9/016| author=D.Kouznetsov|coauthors=J.-F.Bisson, J.Li, K.Ueda|title=Self-pulsing laser as oscillator Toda: Approximation through elementary functions|journal=Journal of Physics A|volume=40|pages=1–18| year=2007|doi=10.1088/1751-8113/40/9/016] and Q-switching cite journal
url=http://www3.interscience.wiley.com/cgi-bin/abstract/113390681/ABSTRACT
author=J.Dong
coauthors=A.Shirakawa, K.Ueda
journal=Laser Physics Letters
title=Switchable pulses generation in passively Q-switched multilongitudinal-mode microchip laser
volume=4
issue=2
pages=109–116
year=2007
doi=10.1002/lapl.200610077
] .
*Generation and analysis of multi-charge ions, http://www.ils.uec.ac.jp/EHCI.html,
*Ultra-cold atoms (cooling, trapping, Bose–Einstein condensate, atom optics and holography, quantum reflection and ridged mirrors cite journal
url=http://stacks.iop.org/0953-4075/39/1605
author= D.Kouznetsov
coauthors=H. Oberst, K. Shimizu, A. Neumann, Y. Kuznetsova, J.-F. Bisson, K. Ueda, S. R. J. Brueck
title=Ridged atomic mirrors and atomic nanoscope
journal=JOPB
volume=39
pages=1605–1623
year=2006
doi=10.1088/0953-4075/39/7/005
] .
* Trappingcite journal
url=http://www.ils.uec.ac.jp
author= M.Horikoshi
coauthors=K.Nakagawa
title=Atom chip based fast production of Bose-Einstein condensat
journal=Applied Physics B
volume=83
pages=363–366
year=2006
doi=10.1007/s00340-005-2083-z
] and fluorescense of atoms at nanowires cite journal
url=http://www.opticsinfobase.org/abstract.cfm?URI=oe-15-9-5431
author= L.P.Nayak
coauthors=P.N.Melentiev, M.Morinaga*, F.L.Klein, V.I.Balykin, K.Hakuta.
title=Optical nanofiber as an efficient tool for manipulating and probing atomic fluorescence
journal=Optics Express
volume=15
pages=5431–5438
year=2007
doi=10.1364/OE.15.005431
]
*Fundamentals of quantum mechanics with BECcite journal
url=http://link.aps.org/abstract/PRL/v99/e043002
doi=10.1103/PhysRevLett.99.043002
author=M.Sadgrove
coauthors= M.Horikoshi, T.Sekimura and K.Nakagawa
title=Rectified Momentum Transport for a Kicked Bose-Einstein Condensate
journal=PRL
volume=99
pages=043002
year=2007
] .

ee also

*University of Electro-Communications (English version)

*Japanese version: http://ja.wikipedia.org/wiki/電気通信大学#.E3.83.AC.E3.83.BC.E3.82.B6.E3.83.BC

* http://www.ils.uec.ac.jp/eng , homepage of the Institute (English version)

*Google map; the institute is the large building in the center, just south of the tennis court: http://maps.google.com/maps?q=34.85,138.55&ie=UTF8&om=1&z=19&ll=35.657952,139.54128&spn=0.001077,0.002942&t=h

References


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