Ti:sapphire rib channel waveguide fabricated by reactive ion etching of a planar waveguide

A. Crunteanu; Markus Pollnau; G. Jänchen; C. Hibert; P. Hoffmann; R.P. Salathé; R.W. Eason; C. Grivas; D.P. Shepherd

doi:10.1007/s00340-002-0952-2

Ti:sapphire rib channel waveguide fabricated by reactive ion etching of a planar waveguide

A. Crunteanu, Markus Pollnau, G. Jänchen, C. Hibert, P. Hoffmann, R.P. Salathé, R.W. Eason, C. Grivas, D.P. Shepherd

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Abstract

We report, to our knowledge, the first active channel waveguide in Ti:sapphire. We have created ~ 1.4-μm high ribs in a ~ 10-μm thick Ti:sapphire planar waveguide by reactive ion etching. Following excitation by an Ar-ion laser, the rib structure showed channel-waveguide fluorescence emission. The mode profiles and the beam-parameter values (M2) were measured. The coupling efficiency of fluorescence emission into a single-mode fiber was an order of magnitude higher than for fluorescence fromunstructured planar regions of the waveguide. Such devices are of interest as low-threshold tunable lasers and as broadband light sources in low-coherence interferometry.

Original language	Undefined
Article number	10.1007/s00340-002-0952-2
Pages (from-to)	15-17
Number of pages	3
Journal	Applied physics B: Lasers and optics
Volume	75
Issue number	1
DOIs	https://doi.org/10.1007/s00340-002-0952-2
Publication status	Published - 2002

Keywords

IOMS-APD: Active Photonic Devices
IR-70082
EWI-17548

Access to Document

10.1007/s00340-002-0952-2

http://eprints.eemcs.utwente.nl/secure2/17548/01/039-apb3_Crunteanu.pdf

Cite this

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title = "Ti:sapphire rib channel waveguide fabricated by reactive ion etching of a planar waveguide",

abstract = "We report, to our knowledge, the first active channel waveguide in Ti:sapphire. We have created ~ 1.4-μm high ribs in a ~ 10-μm thick Ti:sapphire planar waveguide by reactive ion etching. Following excitation by an Ar-ion laser, the rib structure showed channel-waveguide fluorescence emission. The mode profiles and the beam-parameter values (M2) were measured. The coupling efficiency of fluorescence emission into a single-mode fiber was an order of magnitude higher than for fluorescence fromunstructured planar regions of the waveguide. Such devices are of interest as low-threshold tunable lasers and as broadband light sources in low-coherence interferometry.",

keywords = "IOMS-APD: Active Photonic Devices, IR-70082, EWI-17548",

author = "A. Crunteanu and Markus Pollnau and G. J{\"a}nchen and C. Hibert and P. Hoffmann and R.P. Salath{\'e} and R.W. Eason and C. Grivas and D.P. Shepherd",

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TY - JOUR

T1 - Ti:sapphire rib channel waveguide fabricated by reactive ion etching of a planar waveguide

AU - Crunteanu, A.

AU - Pollnau, Markus

AU - Jänchen, G.

AU - Hibert, C.

AU - Hoffmann, P.

AU - Salathé, R.P.

AU - Eason, R.W.

AU - Grivas, C.

AU - Shepherd, D.P.

PY - 2002

Y1 - 2002

N2 - We report, to our knowledge, the first active channel waveguide in Ti:sapphire. We have created ~ 1.4-μm high ribs in a ~ 10-μm thick Ti:sapphire planar waveguide by reactive ion etching. Following excitation by an Ar-ion laser, the rib structure showed channel-waveguide fluorescence emission. The mode profiles and the beam-parameter values (M2) were measured. The coupling efficiency of fluorescence emission into a single-mode fiber was an order of magnitude higher than for fluorescence fromunstructured planar regions of the waveguide. Such devices are of interest as low-threshold tunable lasers and as broadband light sources in low-coherence interferometry.

AB - We report, to our knowledge, the first active channel waveguide in Ti:sapphire. We have created ~ 1.4-μm high ribs in a ~ 10-μm thick Ti:sapphire planar waveguide by reactive ion etching. Following excitation by an Ar-ion laser, the rib structure showed channel-waveguide fluorescence emission. The mode profiles and the beam-parameter values (M2) were measured. The coupling efficiency of fluorescence emission into a single-mode fiber was an order of magnitude higher than for fluorescence fromunstructured planar regions of the waveguide. Such devices are of interest as low-threshold tunable lasers and as broadband light sources in low-coherence interferometry.

KW - IOMS-APD: Active Photonic Devices

KW - IR-70082

KW - EWI-17548

U2 - 10.1007/s00340-002-0952-2

DO - 10.1007/s00340-002-0952-2

M3 - Article

SN - 0946-2171

VL - 75

SP - 15

EP - 17

JO - Applied physics B: Lasers and optics

JF - Applied physics B: Lasers and optics

IS - 1

M1 - 10.1007/s00340-002-0952-2

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