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1

Improvement of Radiation Resistance of Pure Silica Core Fibers by Hydrogen Treatment

Nagasawa, Kaya, Hoshi, Yutaka, Ohki, Yoshimichi, Yahagi, Kichinosuke

Journal:

Japanese Journal of Applied Physics

Year:

1985

File:

PDF, 703 KB

1985

2

Triplet-state defect in high-purity silica glass

Tohmon, Ryoichi, Shimogaichi, Yasushi, Tsuta, Yoshiki, Munekuni, Shuji, Ohki, Yoshimichi, Hama, Yoshimasa, Nagasawa, Kaya

Journal:

Physical Review B

Year:

1990

Language:

english

File:

PDF, 159 KB

english, 1990

3

radicals in vacuum-ultraviolet-irradiated high-purity silica glass

Nishikawa, Hiroyuki, Nakamura, Ryuta, Ohki, Yoshimichi, Nagasawa, Kaya, Hama, Yoshimasa

Journal:

Physical Review B

Year:

1992

Language:

english

File:

PDF, 383 KB

english, 1992

4

with oxygen vacancy

Tohmon, Ryoichi, Mizuno, Hiroyasu, Ohki, Yoshimichi, Sasagane, Kotoku, Nagasawa, Kaya, Hama, Yoshimasa

Journal:

Physical Review B

Year:

1989

Language:

english

File:

PDF, 449 KB

english, 1989

5

Distant metastasis in patients with myxofibrosarcoma

Tsuchie, Hiroyuki, Kaya, Mitsunori, Nagasawa, Hiroyuki, Emori, Makoto, Murahashi, Yasutaka, Mizushima, Emi, Miyakoshi, Naohisa, Yamashita, Toshihiko, Shimada, Yoichi

Journal:

Upsala Journal of Medical Sciences

Year:

2017

Language:

english

File:

PDF, 735 KB

english, 2017

6

Radial distribution of some defect-related optical absorption and PL bands in silica glasses

Yuryo Sakurai, Kaya Nagasawa

Journal:

Journal of Non-Crystalline Solids

Year:

2000

Language:

english

File:

PDF, 274 KB

english, 2000

7

Light emission associated with laser damage in silica glass and optical glass

Yuryo Sakurai, Kaya Nagasawa

Journal:

Journal of Non-Crystalline Solids

Year:

2000

Language:

english

File:

PDF, 172 KB

english, 2000

8

Excitation energy dependence of the photoluminescence band at 2.7 and 4.3 eV in silica glass at low temperature

Yuryo Sakurai, Kaya Nagasawa

Journal:

Journal of Non-Crystalline Solids

Year:

2001

Language:

english

File:

PDF, 99 KB

english, 2001

9

A study of the PL emission mechanisms in silica glass by considering the growth of the PL

Yuryo Sakurai, Kaya Nagasawa

Journal:

Journal of Non-Crystalline Solids

Year:

2001

Language:

english

File:

PDF, 109 KB

english, 2001

10

Correlation between 1.5 eV photoluminescence-band and 3.8 eV absorption band in silica glass

Yuryo Sakurai, Kaya Nagasawa

Journal:

Journal of Non-Crystalline Solids

Year:

2000

Language:

english

File:

PDF, 231 KB

english, 2000

11

2.7-eV luminescence in as-manufactured high-purity silica glass

Tohmon, Ryoichi, Shimogaichi, Yasushi, Mizuno, Hiroyasu, Ohki, Yoshimichi, Nagasawa, Kaya, Hama, Yoshimasa

Journal:

Physical Review Letters

Year:

1989

Language:

english

File:

PDF, 193 KB

english, 1989

12

Spatial distribution of defects in high‐purity silica glasses

Tohmon, Ryoichi, Ikeda, Akihiro, Shimogaichi, Yasushi, Munekuni, Shuji, Ohki, Yoshimichi, Nagasawa, Kaya, Hama, Yoshimasa

Journal:

Journal of Applied Physics

Year:

1990

Language:

english

File:

PDF, 624 KB

english, 1990

13

Cause of the 5.0 ev absorption band in pure silica glass

Ryoichi Tohmon, Yoshiya Yamasaka, Kaya Nagasawa, Yoshimichi Ohki, Yoshimasa Hama

Journal:

Journal of Non-Crystalline Solids

Year:

1987

Language:

english

File:

PDF, 325 KB

english, 1987

14

Hydrogen bond of OH-groups in silica glass and its relation to the 1.39 μm absorption

Yukihiro Yokomachi, Ryoichi Tohmon, Kaya Nagasawa, Yoshimichi Ohki

Journal:

Journal of Non-Crystalline Solids

Year:

1987

Language:

english

File:

PDF, 349 KB

english, 1987

15

SPIE Proceedings [SPIE 1989 Intl Congress on Optical Science and Engineering - Paris, France (Monday 24 April 1989)] Glasses for Optoelectronics - Red Luminescence In Pure Silica Glass

Tohmon, Ryoichi, Shimogaichi, Yasushi, Munekuni, Shuji, Ohki, Yoshimichi, Nagasawa, Kaya, Sakurai, Yuryo, Hama, Yoshimasa, Righini, Giancarlo C.

Year:

1989

Language:

english

File:

PDF, 252 KB

english, 1989

16

SPIE Proceedings [SPIE San Dieg - DL Tentative - San Diego, CA (Sunday 1 July 1990)] Properties and Characteristics of Optical Glass II - Paramagnetic centers induced by ArF excimer laser irradiation in high-purity silica glasses

Nishikawa, Hiroyuki, Nakamura, Ryuta, Tohmon, Ryoichi, Ohki, Yoshimichi, Hama, Yoshimasa, Sakurai, Yuryo, Nagasawa, Kaya, Marker III, Alexander J.

Year:

1990

Language:

english

File:

PDF, 577 KB

english, 1990

17

Gamma-Ray Induced 2 eV Optical Absorption Band in Pure-Silica Core Fibers

Nagasawa, Kaya, Ohki, Yoshimichi, Hama, Yoshimasa

Journal:

Japanese Journal of Applied Physics

Year:

1987

File:

PDF, 503 KB

1987

18

Gamma-Ray Induced Absorption Band at 770 nm in Pure Silica Core Optical Fibers

Nagasawa, Kaya, Tanabe, Manabu, Yahagi, Kichinosuke, Iino, Akira, Kuroha, Toshiaki

Journal:

Japanese Journal of Applied Physics

Year:

1984

File:

PDF, 861 KB

1984

19

Visible photoluminescence from Si clusters in γ-irradiated amorphous SiO2

Nishikawa, Hiroyuki, Watanabe, Eiki, Ito, Daisuke, Sakurai, Yuryo, Nagasawa, Kaya, Ohki, Yoshimichi

Journal:

Journal of Applied Physics

Year:

1996

Language:

english

File:

PDF, 307 KB

english, 1996

20

Effect of Cladding Material on 2-eV Optical Absorption in Pure-Silica Core Fibers and Method to Suppress the Absorption

Nagasawa, Kaya, Tohmon, Ryoichi, Ohki, Yoshimichi

Journal:

Japanese Journal of Applied Physics

Year:

1987

File:

PDF, 624 KB

1987

21

Radiation Effects on Pure Silica Core Optical Fibers by γ-Rays: Relation between 2 eV Band and Non-Bridging Oxygen Hole Centers

Nagasawa, Kaya, Hoshi, Yutaka, Ohki, Yoshimichi, Yahagi, Kichinosuke

Journal:

Japanese Journal of Applied Physics

Year:

1986

File:

PDF, 781 KB

1986

22

Characteristic red photoluminescence band in oxygen-deficient silica glass

Sakurai, Yuryo, Nagasawa, Kaya, Nishikawa, Hiroyuki, Ohki, Yoshimichi

Journal:

Journal of Applied Physics

Year:

1999

Language:

english

File:

PDF, 311 KB

english, 1999

23

Defects and optical absorption bands induced by surplus oxygen in high-purity synthetic silica

Nishikawa, Hiroyuki, Tohmon, Ryoichi, Ohki, Yoshimichi, Nagasawa, Kaya, Hama, Yoshimasa

Journal:

Journal of Applied Physics

Year:

1989

Language:

english

File:

PDF, 778 KB

english, 1989

24

Photoluminescence from defect centers in high-purity silica glasses observed under 7.9-eV excitation

Nishikawa, Hiroyuki, Shiroyama, Taiji, Nakamura, Ryuta, Ohki, Yoshimichi, Nagasawa, Kaya, Hama, Yoshimasa

Journal:

Physical Review B

Year:

1992

Language:

english

File:

PDF, 400 KB

english, 1992

25

Green photoluminescence band in γ-irradiated oxygen-surplus silica glass

Sakurai, Yuryo, Nagasawa, Kaya

Journal:

Journal of Applied Physics

Year:

1999

Language:

english

File:

PDF, 319 KB

english, 1999

26

Point defects in high purity silica induced by high-dose gamma irradiation

Sakurai, Yuryo, Nagasawa, Kaya, Nishikawa, Hiroyuki, Ohki, Yoshimichi

Journal:

Journal of Applied Physics

Year:

1994

Language:

english

File:

PDF, 838 KB

english, 1994

27

Generation mechanism of photoinduced paramagnetic centers from preexisting precursors in high-purity silicas

Nishikawa, Hiroyuki, Nakamura, Ryuta, Tohmon, Ryoichi, Ohki, Yoshimichi, Sakurai, Yuryo, Nagasawa, Kaya, Hama, Yoshimasa

Journal:

Physical Review B

Year:

1990

Language:

english

File:

PDF, 460 KB

english, 1990

28

Effect of high-temperature treatment on optical-absorption bands in amorphous SiO2

Dohguchi, Nobuyuki, Munekuni, Shuji, Nishikawa, Hiroyuki, Ohki, Yoshimichi, Nagasawa, Kaya

Journal:

Journal of Applied Physics

Year:

1991

Language:

english

File:

PDF, 570 KB

english, 1991

29

Correlation between the green photoluminescence band and the peroxy radical in γ-irradiated silica glass

Sakurai, Yuryo, Nagasawa, Kaya

Journal:

Journal of Applied Physics

Year:

2000

Language:

english

File:

PDF, 319 KB

english, 2000

30

Si—O—Si strained bond and paramagnetic defect centers induced by mechanical fracturing in amorphous SiO2

Munekuni, Shuji, Dohguchi, Nobuyuki, Nishikawa, Hiroyuki, Ohki, Yoshimichi, Nagasawa, Kaya, Hama, Yoshimasa

Journal:

Journal of Applied Physics

Year:

1991

Language:

english

File:

PDF, 1.21 MB

english, 1991

31

SPIE Proceedings [SPIE 1989 Intl Congress on Optical Science and Engineering - Paris, France (Monday 24 April 1989)] Glasses for Optoelectronics - Role Of Nonstoichiometry On UV Absorption And Luminescence In High-Purity Silica.

Nishikawa, Hiroyuki, Tohmon, Ryoichi, Nagasawa, Kaya, Ohki, Yoshimichi, Hama, Yoshimasa, Righini, Giancarlo C.

Year:

1989

Language:

english

File:

PDF, 412 KB

english, 1989

32

Structural Inhomogeneily in Ge-Doped Silica Core of Optical Fibers Made by the VAD Method

Nagasawa, Kaya, Ohki, Yoshimichi

Journal:

Japanese Journal of Applied Physics

Year:

1986

Language:

english

File:

PDF, 63 KB

english, 1986

33

Gamma-Irradiation Effect on High- T c Superconductor YBa 2 Cu 3 O 7- x

Kutsukake, Takao, Somei, Hiromichi, Ohki, Yoshimichi, Nagasawa, Kaya, Kaneko, Fumitaka

Journal:

Japanese Journal of Applied Physics

Year:

1989

File:

PDF, 231 KB

1989

34

Relation between Ge(2) Center and 11.9 mT Hyperfine Structure of ESR Spectra in Ge-Doped Silica Fibers

Nagasawa, Kaya, Fujii, Takashi, Ohki, Yoshimichi, Hama, Yoshimasa

Journal:

Japanese Journal of Applied Physics

Year:

1988

Language:

english

File:

PDF, 159 KB

english, 1988

35

Effect of Oxygen Content on Defect Formation in Pure-Silica Core Fibers

Nagasawa, Kaya, Hoshi, Yutaka, Ohki, Yoshimichi

Journal:

Japanese Journal of Applied Physics

Year:

1987

File:

PDF, 523 KB

1987

36

SPIE Proceedings [SPIE OE/LASE'93: Optics, Electro-Optics, & Laser Applications in Science& Engineering - Los Angeles, CA (Sunday 17 January 1993)] Solid State Lasers IV - Tunable glass laser in UV and visible range by auger-free luminescence

Nagasawa, Kaya, Sakurai, Yuryo, Quarles, Gregory J., Woodall II, Milton A.

Year:

1993

Language:

english

File:

PDF, 404 KB

english, 1993

37

SPIE Proceedings [SPIE 1989 Intl Congress on Optical Science and Engineering - Paris, France (Monday 24 April 1989)] Glasses for Optoelectronics - Triplet State In High-Purity Silica Glasses

Tohmon, Ryoichi, Shimogaichi, Yasushi, Ohki, Yoshimichi, Nagasawa, Kaya, Hama, Yoshimasa, Righini, Giancarlo C.

Year:

1989

Language:

english

File:

PDF, 308 KB

english, 1989

38

[IEEE Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1984 - Claymont, DE, USA (1984.10.21-1984.10.25)] Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1984 - Induced loss characteristics in silicone clad pure silica core fiber under gamma radiation — relation between the NBOHC and the 2.0 eV band —

Nagasawa, Kaya, Hoshi, Yutaka, Yahagi, Kichinosuke

Year:

1984

Language:

english

File:

PDF, 2.30 MB

english, 1984