Publication detail

Near field optical beam induced current measurements on heterostructures

LÉTAL, P., TOMÁNEK, P., GRMELA, L.

Original Title

Near field optical beam induced current measurements on heterostructures

Czech Title

Měření opticky indukovaného fotoproudu v blízkém poli na heterostrukturách

English Title

Near field optical beam induced current measurements on heterostructures

Type

conference paper

Language

en

Original Abstract

We report near field optical beam induced current (NOBIC) measurements on semiconductor quantum well (QW) structures. A sub-wavelength fiber tip is coupled with a tunable laser source and scanned over a sample surface. The induced photocurrent reveals the compositional profile of quantum structures. We demonstrated that the resolution of this technique depends strongly on the aperture size.

Czech abstract

Článek přináší informace o měření opticky indukovaného fotoproudu v blízkém poli na heterostrukturách s kvantovou jámou. Hrot sondy je připojen k laditelnému laseru a skenuje povrch. Indukovaný fotoproud odráží profil složení kvantové struktury. Ukazuje se, že rozlišení těsně závisí na velikosti apertury sondy.

English abstract

We report near field optical beam induced current (NOBIC) measurements on semiconductor quantum well (QW) structures. A sub-wavelength fiber tip is coupled with a tunable laser source and scanned over a sample surface. The induced photocurrent reveals the compositional profile of quantum structures. We demonstrated that the resolution of this technique depends strongly on the aperture size.

Keywords

near field optics, locally induced photocurrent, quantum wells, lateral resolution

RIV year

2001

Released

15.11.2001

Publisher

Vysoké učení technické v Brně

Location

Brno

ISBN

80-214-1992-X

Book

Nové trendy ve fyzice (New trends in Physics)

Edition

sv.2

Pages from

387

Pages to

393

Pages count

7

BibTex


@inproceedings{BUT6610,
  author="Petr {Létal} and Pavel {Tománek} and Lubomír {Grmela}",
  title="Near field optical beam induced current measurements on heterostructures",
  annote="We report near field optical beam induced current (NOBIC) measurements on semiconductor quantum well (QW) structures. A sub-wavelength fiber tip is coupled with a tunable laser source and scanned over a sample surface. The induced photocurrent reveals the compositional profile of quantum structures. We demonstrated that the resolution of this technique depends strongly on the aperture size.",
  address="Vysoké učení technické v Brně",
  booktitle="Nové trendy ve fyzice (New trends in Physics)",
  chapter="6610",
  edition="sv.2",
  institution="Vysoké učení technické v Brně",
  year="2001",
  month="november",
  pages="387",
  publisher="Vysoké učení technické v Brně",
  type="conference paper"
}