Strain-induced channel waveguiding in bulk sapphire substrates

被引：9

作者：

Liu, MJ ^{[1
]}

Kim, HK ^{[1
]}

机构：

[1] Univ Pittsburgh, Dept Elect Engn, Pittsburgh, PA 15261 USA

来源：

APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 17期

关键词：

D O I：

10.1063/1.1413221

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on the two-dimensional confinement of light in the channel region of a bulk sapphire substrate, which was formed by utilizing the photoelastic effect in sapphire induced by a sputter-deposited SiO2 film. The experimental result, combined with the simulation results, shows that the sputter-deposited SiO2 films are compressively stressed up to 10 GPa level and that a 1.0-mum-thick film, for example, induces an index change of 5x10(-3) in sapphire in the vertical direction. This amount of index change is found sufficient to support a fundamental mode at wavelengths of 1.54 mum or below. (C) 2001 American Institute of Physics.

引用

页码：2693 / 2695

页数：3

共 12 条

[1] Stress-induced vertical confinement of light in bulk GaAs and Si substrates [J].

Almashary, BA ;

Kim, HK .

IEEE PHOTONICS TECHNOLOGY LETTERS, 1996, 8 (10) :1358-1360

[2]

[Anonymous], 1998, HDB OPTICAL CONSTANT

[3]

ASHCROFT NW, 1976, SOLID STATE PHYS, P125

[4] Stress-induced lateral confinement of light in epitaxial BaTiO3 films grown by radio-frequency magnetron sputtering [J].

Barrios, P ;

Kim, HK .

APPLIED PHYSICS LETTERS, 1998, 73 (08) :1017-1019

[5]

Bass M., 1995, HDB OPTICS, V2

[6] Propagation of guided optical waves in thick GaN layers grown on (0001) sapphire [J].

Ciplys, D ;

Gaska, R ;

Shur, MS ;

Rimeika, R ;

Yang, JW ;

Khan, MA .

APPLIED PHYSICS LETTERS, 2000, 76 (16) :2232-2234

[7] Thin-film-induced index change and channel waveguiding in epitaxial GaN films [J].

Kim, E ;

Lee, B ;

Nahhas, A ;

Kim, HK .

APPLIED PHYSICS LETTERS, 2000, 77 (12) :1747-1749

[8] PHOTO-ELASTIC WAVEGUIDES AND THEIR EFFECT ON STRIPE-GEOMETRY GAAS-GA1-XALXAS LASERS [J].

KIRKBY, PA ;

SELWAY, PR ;

WESTBROOK, LD .

JOURNAL OF APPLIED PHYSICS, 1979, 50 (07) :4567-4579

[9]

LANDOLT H, 1969, NUMERICAL DATA FUNCT, V2, P8

[10]

NYE JF, 1985, PHYS PROPERTIES CRYS, pCH8

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