Patent
Broadband optical diode for a ring laser
TLDR
In this article, a broadband optical diode consisting of a Faraday element within a magnetic field and an optically active element was constructed with the conditions that the forward wave insertion loss does not exceed a maximum specified value, and the differential loss between forward and backward traveling waves is not less than a minimum specified value.Abstract:
A broadband optical diode consists of a Faraday element within a magnetic field and an optically active element. The materials and dimensions of the Faraday element and the optically active element are chosen so that their polarization rotations approximately match over a broad wavelength span, with the rotation angles and the mismatch between them specified by the conditions that the forward wave insertion loss does not exceed a maximum specified value, and the differential loss between forward and backward traveling waves is not less than a minimum specified value.read more
Citations
More filters
Patent
Polarization-modulating optical element
Damian Fiolka,Markus Deguenther +1 more
TL;DR: In this paper, the authors proposed a projection system, comprising a radiation source, an illumination system operable to illuminate a structured mask, and a projection objective for projecting an image of the mask structure onto a light-sensitive substrate.
Patent
Semiconductor ring and folded cavity lasers
TL;DR: In this paper, a semiconductor laser that includes at least one grating reflector with a grating period selected to diffract at a nonperpendicular angle within the plane of the laser waveguide is described.
Patent
Apparatus for providing a pattern of polarization
Michael M Albert,Damian Fiolka +1 more
TL;DR: In this article, a polarization pattern assembly for use in an illuminator and an apparatus for providing at least one polarization pattern in a pupil for a lithography system were presented. But the present system is not suitable for illumination.
Patent
Frequency shifted cavity for electromagnetic radiation
TL;DR: In this article, a frequency shifted cavity apparatus for electromagnetic radiation and a process filtering electromagnetic radia-tion is illustrated and described, which exhibits stationary mode solutions having instantaneous frequencies which change in time, thus eliminating the need for changing the optical path length within the cavity and also eliminating the change in the difference in frequency between two difference resonate modes.
Patent
Acoustically controlled frequency shifted cavity for electromagnetic radiation
TL;DR: In this article, a frequency shifted cavity apparatus for electromagnetic radiation is described, where the instantaneous frequency increases and changes non-linearly in time, and the cavity can optionally include an optical amplifier with sufficient gain to cause oscillation of at least one cavity mode.
References
More filters
Journal ArticleDOI
Design and performance of a broad-band optical diode to enforce one-direction traveling-wave operation of a ring laser
T. Johnston,W. Proffitt +1 more
TL;DR: In this article, the principles for designing an intracavity "optical diode" for operation over a broad wavelength range are discussed, and the design with the broadest range, based on SF-2 glass as the Faraday rotator material, has given stable one-direction single-frequency operation from 425 to 810 nm.
Journal ArticleDOI
High-efficiency single-frequency cw ring dye laser.
S. M. Jarrett,J. F. Young +1 more
TL;DR: In this article, a cw dye laser is described that provides tunable, high-power single-frequency radiation over the entire visible spectrum, eliminating spatial hole burning and enhancing mode competition through the use of a ring resonator and a very low-loss Faraday effect device.
Patent
Differential laser gyro system
TL;DR: In this article, a laser gyro employs both polarization anisotropy and directional anisotropic in the optical path so as to provide two laser gyros operating in the same cavity with cavity modes of different frequencies in the form of mutually opposite polarization (such as both right and left circularly polarized waves, or two waves of mutually perpendicular orientation), in each of the clockwise and counterclockwise directions.
Patent
Compensated frequency biasing system for ring laser
TL;DR: In this article, a compensated Faraday bias cell system is adapted to shift differentially the respective phases of the contradirectionally flowing light waves propagating in a ring laser cavity.