Lightlab Imaging, Inc.

Ludwig-Maximilians-Universitat München

Benjamin Biedermann

Robert Alexander Huber

Christoph Eigenwillig

Wolfgang Wieser

Thomas Klein

Dieter Muellner

Michael Eder

Dieter Müllner

Robert Huber

A Fabry-P&#xe9;rot tuneable filter device is described with reflecting elements separated by an optical path length to form an optical resonator cavity. A first actuator means is directly or indirectly coupled with a first reflecting element. And the first actuator means is configured to modulate the optical path length between first and second reflecting elements by a modulation amplitude to thereby sweep the optical resonator cavity through a band of optical resonance frequencies with a sweep frequency of 70 kHz or more. And the mechanical coupling between selected elements of the arrangement is sufficiently low such that when operated at the sweep frequency, the selected elements act as a system of coupled oscillating elements. In addition or alternatively, the first actuator means is directly or indirectly coupled with the first reflecting element so as to substantially drive the first reflecting element only.

Dynamical Fabry-Perot tuneable filter device

A Fabry-P&#xe9;rot tunable filter device is described with reflecting elements separated by an optical path length to form an optical resonator cavity. A first actuator means is directly or indirectly coupled with a first reflecting element. And the first actuator means is configured to modulate the optical path length between first and second reflecting elements by a modulation amplitude to thereby sweep the optical resonator cavity through a band of optical resonance frequencies with a sweep frequency of 70 kHz or more. And the mechanical coupling between selected elements of the arrangement is sufficiently low such that when operated at the sweep frequency, the selected elements act as a system of coupled oscillating elements. In addition or alternatively, the first actuator means is directly or indirectly coupled with the first reflecting element so as to substantially drive the first reflecting element only.

Dynamical Fabry-P&#xe9;rot tuneable filter device

In at least one embodiment of the wavelength-tunable light source (), it comprises an output source (), which is capable in operation of generating electromagnetic radiation (R). Furthermore, the light source () has a wavelength-selective first filter element (), which is situated downstream from the output source (). Moreover, the light source () contains a first amplifier medium (), which is situated downstream from the first filter element () and is capable of at least partial amplification of the radiation (R) emitted by the output source (). The light source () further comprises at least one wavelength-selective second filter element (), which is situated downstream from the first amplifier medium (), the second filter element () having an optical spacing (L) to the first filter element (). The first filter element () and the at least one second filter element () are tunable via a control unit (), which the light source () has. The filter elements () are tuned for this purpose so that first filter element () and second filter element () are transparent to a partial radiation (P) of the radiation (R) in a time delay (T) to one another, the delay (T) being equal to the quotient of the optical spacing (L) and the speed of light in vacuum (c).

Wavelength-tunable light source

In at least one embodiment of the wavelength-tunable light source, it comprises an output source, which is capable in operation of generating electromagnetic radiation. Furthermore, the light source has a wavelength-selective first filter element, which is situated downstream from the output source. Moreover, the light source contains a first amplifier medium, which is situated downstream from the first filter element and is capable of at least partial amplification of the radiation emitted by the output source. The light source further comprises at least one wavelength-selective second filter element, which is situated downstream from the first amplifier medium, the second filter element having an optical spacing to the first filter element. The first filter element and the at least one second filter element are tunable via a control unit, which the light source has.

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Munich, Germany

Benjamin Biedermann