73,520 research outputs found
Acousto-optic filter for electronic laser tuning
Electronically tunable lithium niobate filter utilizes acoustic-optic diffraction for tuning laser to desired frequencies. Filter placed inside laser cavity diffracts incident optical signal of one polarization into orthogonal polarization by collinearly propagating acoustic beam to desired wavelength
Proposed acousto-optic filter
Narrow band optical filter is electronically tunable over a large wavelength region. The filter utilizes collinear acousto-optic diffraction in an optically anisotropic media
Investigation of laser dynamics, modulation and control by means of intra-cavity time varying perturbation Semiannual status report
Laser dynamics, control, and stabilization of optical frequency radiatio
Investigation of laser dynamics, modulation and control by means of intra-cavity time varying perturbation
Work continued on a number of projects aimed at the generation of tunable visible, infrared, and ultraviolet light; and on the control of this light by means of novel mode-locking and modulation techniques. Progress is summarized for the following projects: (1) the transient modelocking of the Nd:YAG laser and application of short optical pulses; (2) studies of the sodium-xenon excimer laser; (3) development of techniques for vacuum ultraviolet holography; and (4) studies of multiple photon pumped xenon and argon excimer lasers
Investigation of laser dynamics, modulation and control by means of intra-cavity time varying perturbation Quarterly status report, 1 Feb. - 30 Apr. 1970
Tunable optical sources by means of nonlinear optical technique
Observation of Nonlocal Modulation with Entangled Photons
We demonstrate a new type of quantum mechanical correlation where phase
modulators at distant locations, acting on the photons of an entangled pair,
interfere to determine the apparent depth of modulation. When the modulators
have the same phase, the modulation depth doubles; when oppositely phased, the
modulators negate each other.Comment: 4 pages, 4 figure
Nonlocal Modulation of Entangled Photons
We consider ramifications of the use of high speed light modulators to
questions of correlation and measurement of time-energy entangled photons.
Using phase modulators, we find that temporal modulation of one photon of an
entangled pair, as measured by correlation in the frequency domain, may be
negated or enhanced by modulation of the second photon. Using amplitude
modulators we describe a Fourier technique for measurement of biphoton wave
functions with slow detectors
Multimode analysis of the light emitted from a pulsed optical parametric oscillator
We present a multimode treatment of the optical parametric oscillator, which
is valid for both pulsed and continuous-wave pump fields. The two-time
correlation functions of the output field are derived, and we apply the theory
to analyze a scheme for heralded production of non-classical field states that
may be subsequently stored in an atomic quantum memory.Comment: 11 pages, 6 figure
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