Microspectroscopy of ultrafast laser inscribed channel waveguides in Yb:tungstate crystals

F. M. Bain; W. F. Silva; A. A. Lagatsky; R. R. Thomson; N. D. Psaila; A. K. Kar; W. Sibbett; D. Jaque; C. T. A. Brown

doi:10.1063/1.3573999

Microspectroscopy of ultrafast laser inscribed channel waveguides in Yb:tungstate crystals

F. M. Bain, W. F. Silva, A. A. Lagatsky, R. R. Thomson, N. D. Psaila, A. K. Kar, W. Sibbett, D. Jaque, C. T. A. Brown

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We report microspectroscopy measurements of crystalline channel waveguides fabricated in Yb:KGd(WO4)(2) and Yb:KY(WO4)(2) using the ultrafast laser inscription technique. From these measurements we find that densification of the WO2W bridge in the double tungstate crystal lattice is responsible for the refractive index increase, which creates the waveguide confinement. We identified that shifts toward lower energies in the ~760 cm(-1) Raman mode indicate regions, which guide light polarized along the crystallographic b axis, while higher energy shifts in the 682 and 898 cm(-1) Raman lines correspond to guiding regions for light polarized along the crystallographic a axis.

Original language	English
Article number	141108
Number of pages	3
Journal	Applied Physics Letters
Volume	98
Issue number	14
DOIs	https://doi.org/10.1063/1.3573999
Publication status	Published - Apr 2011

Keywords

Crystal structure
Refractive index
Luminescence
Channel waveguides
Photonic crystal waveguides
Lanthanides
Tungsten

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10.1063/1.3573999

1.3573999
Copyright 2011, American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters, Vol 98, Issue 14, and may be found at: http://scitation.aip.org/content/aip/journal/apl/98/14/10.1063/1.3573999
Final published version, 2.44 MB

Modular Ultrafast Sources EP/E06440X/1: Modular Ultrafast Sources
Sibbett, W. (PI) & Brown, C. T. A. (CoI)
EPSRC
1/09/07 → 30/06/12
Project: Standard
Nano- and Micro-scale Integration: Nano- and Micro-scale Integration of glass and semiconductors. Basic Technology grant
Sibbett, W. (PI), Brown, C. T. A. (CoI) & Herrington, C. S. (CoI)
EPSRC
3/07/06 → 2/12/10
Project: Standard
Nano/ micro-scale integration EP/D04622X: Nano-and Micro-scale Integration of glass and semiconductors. Basic Technology grant
Herrington, C. S. (PI), Brown, C. T. A. (CoI) & Sibbett, W. (CoI)
EPSRC
3/07/06 → 2/12/10
Project: Standard

Cite this

@article{d06a7e7c8c8b435d9228b31ef6c67c13,

title = "Microspectroscopy of ultrafast laser inscribed channel waveguides in Yb:tungstate crystals",

abstract = "We report microspectroscopy measurements of crystalline channel waveguides fabricated in Yb:KGd(WO4)(2) and Yb:KY(WO4)(2) using the ultrafast laser inscription technique. From these measurements we find that densification of the WO2W bridge in the double tungstate crystal lattice is responsible for the refractive index increase, which creates the waveguide confinement. We identified that shifts toward lower energies in the ~760 cm(-1) Raman mode indicate regions, which guide light polarized along the crystallographic b axis, while higher energy shifts in the 682 and 898 cm(-1) Raman lines correspond to guiding regions for light polarized along the crystallographic a axis.",

keywords = "Crystal structure, Refractive index, Luminescence, Channel waveguides, Photonic crystal waveguides, Lanthanides, Tungsten",

author = "Bain, {F. M.} and Silva, {W. F.} and Lagatsky, {A. A.} and Thomson, {R. R.} and Psaila, {N. D.} and Kar, {A. K.} and W. Sibbett and D. Jaque and Brown, {C. T. A.}",

year = "2011",

month = apr,

doi = "10.1063/1.3573999",

language = "English",

volume = "98",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "14",

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TY - JOUR

T1 - Microspectroscopy of ultrafast laser inscribed channel waveguides in Yb:tungstate crystals

AU - Bain, F. M.

AU - Silva, W. F.

AU - Lagatsky, A. A.

AU - Thomson, R. R.

AU - Psaila, N. D.

AU - Kar, A. K.

AU - Sibbett, W.

AU - Jaque, D.

AU - Brown, C. T. A.

PY - 2011/4

Y1 - 2011/4

N2 - We report microspectroscopy measurements of crystalline channel waveguides fabricated in Yb:KGd(WO4)(2) and Yb:KY(WO4)(2) using the ultrafast laser inscription technique. From these measurements we find that densification of the WO2W bridge in the double tungstate crystal lattice is responsible for the refractive index increase, which creates the waveguide confinement. We identified that shifts toward lower energies in the ~760 cm(-1) Raman mode indicate regions, which guide light polarized along the crystallographic b axis, while higher energy shifts in the 682 and 898 cm(-1) Raman lines correspond to guiding regions for light polarized along the crystallographic a axis.

AB - We report microspectroscopy measurements of crystalline channel waveguides fabricated in Yb:KGd(WO4)(2) and Yb:KY(WO4)(2) using the ultrafast laser inscription technique. From these measurements we find that densification of the WO2W bridge in the double tungstate crystal lattice is responsible for the refractive index increase, which creates the waveguide confinement. We identified that shifts toward lower energies in the ~760 cm(-1) Raman mode indicate regions, which guide light polarized along the crystallographic b axis, while higher energy shifts in the 682 and 898 cm(-1) Raman lines correspond to guiding regions for light polarized along the crystallographic a axis.

KW - Crystal structure

KW - Refractive index

KW - Luminescence

KW - Channel waveguides

KW - Photonic crystal waveguides

KW - Lanthanides

KW - Tungsten

U2 - 10.1063/1.3573999

DO - 10.1063/1.3573999

M3 - Article

SN - 0003-6951

VL - 98

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 14

M1 - 141108

ER -

Microspectroscopy of ultrafast laser inscribed channel waveguides in Yb:tungstate crystals

Abstract

Keywords

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Projects

Modular Ultrafast Sources EP/E06440X/1: Modular Ultrafast Sources

Nano- and Micro-scale Integration: Nano- and Micro-scale Integration of glass and semiconductors. Basic Technology grant

Nano/ micro-scale integration EP/D04622X: Nano-and Micro-scale Integration of glass and semiconductors. Basic Technology grant

Cite this