Sommersemester 2004

Sommersemester 2004

13124 Laserinterferometrie und Gravitationswellendetektoren

Danzmann
EV2, Di 9-11, Ort: 2705 SR209

Lehrveranstaltung für Studierende nach der Zwischenprüfung bzw. dem Vordiplom

Inhalt: Es wird eine Einführung in die experimentellen Grundlagen der laserinterferometrischen Längenmessung gegeben. Klassische und moderne optische Verfahren werden erarbeitet sowie die Behandlung technischer und fundamentaler Rauschquellen wie Seismik, Schrotrauschen, thermisches Rauschen und Unschärfebeziehung. Zusätzlich werden die Grundlagen der Regelungstechnik und der Stabilisierung von Lasern vorgestellt.

Literatur: P. Saulson, "Fundamentals of Gravitational Wave Detectors". World Scientific, Singapore 1994

Hörerkreis: Für Physiker/innen (auch HL) und Ingenieure/innen ab 5. Semester.

Voraussetzung: Vorexamenskenntnisse in Physik.

Vorlesungsbeginn: 13.4.


13125 Gravitational Radiation

Schutz
EV2, Termin: siehe Aushang, Ort: 2705 SR209

Description: An introduction to the theory of gravitational radiation and its detection, with a survey of astronomical systems that are likely to be the strongest sources of detectable radiation.

Audience: Students should previously have studied the foundations of general relativity and have reached the 5th or 7th semester.

Literature: B.F. Schutz, "A First Course in General Relativity". Cambridge University Press K.S. Thorne, "Gravitational Radiation" in: S.W. Hawking & W. Israel (eds.), "300 Years of Gravitation". Cambridge University Press 1987


13126 Nonclassical Interferometry

Schnabel
TV2, Fr 9-11, Ort: 2705 SR209

Description:
Quantum-noise of the electromagnetic field is one of the major noise sources in advanced interferometric grvitational wave detectors. Two sources of quantum noise need to be considered: Shot noise arises from uncertainty due to quantum fluctuations in the number of photons at the interferometer output. Radiation pressure noise arises from the uncertainties in the mirror positions due to quantum fluctuations of internal fields. The sum in quadrature of both contributions leads to the so-called Standard-Quantum-Limit (SQL) and has long been thought to describe a fundamental boundary for detector sensitivities. During the last decade it has been shown that quantum correlated light (nonclassical light) is able to break the SQL. The lectures will introduce proposed concepts for nonclassical interferometry, like squeezed light injection, ponderomotive squeezing and speed meters as well as first experiments.

Audience: Studierende ab dem 8. Semester; (especially recommended for Graduate Studies students).

Literature: Introduction into Quantum Optics, Non-Classical Light.

 
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