The central theme of our programs has been to advance the understanding of optical and quantum co... more The central theme of our programs has been to advance the understanding of optical and quantum communication, radar, and sensing systems. Broadly speaking, this has entailed: (1) developing system-analytic models for important propagation, detection, and communication scenarios; (2) using these models to derive the fundamental limits on system performance; and (3) identifying, and establishing through experimentation the feasibility of, techniques and devices which can be used to approach these performance limits.
The central theme of our programs has been to advance the understanding of optical and quasioptic... more The central theme of our programs has been to advance the understanding of optical and quasioptical communication, radar, and sensing systems. Broadly speaking, this has entailed: (1) developing system-analytic models for important optical propagation, detection, and communication scenarios; (2) using these models to derive the fundamental limits on system performance; and (3) identifying and establishing through experimentation the feasibility of techniques and devices which can be used to approach these performance limits.
The central theme of our programs has been to advance the understanding of optical and quasioptic... more The central theme of our programs has been to advance the understanding of optical and quasioptical communication, radar, and sensing systems. Broadly speaking, this has entailed: (1) developing system-analytic models for important optical propagation, detection, and communication scenarios; (2) using these models to derive the fundamental limits on system performance; and (3) identifying, and establishing through experimentation the feasibility of, techniques and devices which can be used to approach these performance limits.
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Compu... more Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.Includes bibliographical references (leaves 55-56).by Elliott J. Mason, III.M.Eng
The central theme of our programs has been to advance the understanding of optical and quantum co... more The central theme of our programs has been to advance the understanding of optical and quantum communication, radar, and sensing systems. Broadly speaking, this has entailed: (1) developing system-analytic models for important propagation, detection, and communication scenarios; (2) using these models to derive the fundamental limits on system performance; and (3) identifying, and establishing through experimentation the feasibility of, techniques and devices which can be used to approach these performance limits.
Nonlinear optics plays a key role in many applications not only as a means of frequency synthesis... more Nonlinear optics plays a key role in many applications not only as a means of frequency synthesis and control, but also as a source of twin photons and other nonclas-sical states of light. Advances in nonlinear materials, including engineered nonlinear interactions through the use of quasi-phase matching, have increased the flexibility and performance of many nonlinear optical devices. One of the devices presented in this thesis is a 2:1 frequency divider based on self-phase locking in a type-II phase matched optical parametric oscillator. This device is investigated both theoretically and experimentally. Results are also presented on fabrication of periodically-poled nonlinear crystals for quasi-phase matching in lithium niobate and barium magnesium fluoride. Finally, a high-efficiency frequency-nondegenerate twin photon source is implemented in periodically-poled lithium niobate. Acknowledgments I am grateful to my thesis supervisor Dr. Franco Wong for advising me and supporting m...
We demonstrate efficient generation of highly nondegenerate photon pairs with a type-I phase-matc... more We demonstrate efficient generation of highly nondegenerate photon pairs with a type-I phase-matched, periodically-poled lithium niobate parametric downconverter. The signal photons at 800 nm and the idler photons at 1600 nm were generated in a collinear-propagation configuration with an inferred pair generation rate of 1.4×107/s/mW of pump power. Detection of a signal photon triggered a thermoelectrically cooled, 20%-efficient InGaAs avalanche photodiode for the detection of the 1600-nm conjugate idler photon. Using single-mode fibers as spatial mode filters, the signal-conditioned idler-detection probability was ∼3.1%.
Introduction The central theme of our programs has been to advance the understanding of optical a... more Introduction The central theme of our programs has been to advance the understanding of optical and quasi-optical communication, radar, and sensing systems. Broadly speaking, this has entailed: (1) developing system-analytic models for important optical propagation, detection, and communication scenarios; (2) using these models to derive the fundamental limits on system performance; and (3) identifying, and establishing through experimentation the feasibility of, techniques and devices which can be used to approach these performance limits.
We demonstrate an efficient fiber-coupled source of nondegenerate polarization entangled photons ... more We demonstrate an efficient fiber-coupled source of nondegenerate polarization entangled photons at 795 and 1609 nm using bidirectionally pumped parametric down-conversion in bulk periodically poled lithium niobate. The single-mode source has an inferred bandwidth of 50 GHz and a spectral brightness of 300 pairs/s/GHz/mW of pump power that is suitable for narrowband applications such as entanglement transfer from photonic to atomic qubits.
We demonstrate an efficient fiber-coupled source of nondegenerate polarization-entangled photons ... more We demonstrate an efficient fiber-coupled source of nondegenerate polarization-entangled photons at 795 and 1609nm using bidirectionally pumped parametric down-conversion in bulk periodically poled lithium niobate. The single-mode source has an inferred bandwidth of 50GHz and a spectral brightness of 300pairs/(sGHzmW) of pump power that is suitable for narrowband applications such as entanglement transfer from photonic to atomic qubits.
We demonstrate efficient generation of collinearly propagating, highly nondegenerate photon pairs... more We demonstrate efficient generation of collinearly propagating, highly nondegenerate photon pairs in a periodically-poled lithium niobate cw parametric downconverter with an inferred pair generation rate of 1.4*10^7/s/mW of pump power. Detection of an 800-nm signal photon triggers a thermoelectrically-cooled 20%-efficient InGaAs avalanche photodiode for the detection of the 1600-nm conjugate idler photon. Using single-mode fibers as spatial mode filters, we obtain a signal-conditioned idler-detection probability of about 3.1%.
We have analyzed the mode structure of the 800-nm signal output from a PPLN parametric downconver... more We have analyzed the mode structure of the 800-nm signal output from a PPLN parametric downconverter and achieved a signal-conditioned 1600-nm-idler detection probability of 5.2% with single-mode fiber coupling for both outputs.
We demonstrate efficient generation of collinearly propagating, highly nondegenerate photon pairs... more We demonstrate efficient generation of collinearly propagating, highly nondegenerate photon pairs in a periodically poled lithium niobate cw parametric downconverter with an inferred pair generation rate of 1.4 × 107/s/mW of pump power. Detection of an 800-nm signal photon triggers a thermoelectrically cooled 20%-efficient InGaAs avalanche photodiode for the detection of the 1600-nm conjugate idler photon. Using single-mode fibers as spatial mode filters, we obtain a signal-conditioned idler-detection probability of ~3.1%.
Summary form only given. When an optical parametric oscillator (OPO) is above threshold, the osci... more Summary form only given. When an optical parametric oscillator (OPO) is above threshold, the oscillator frequencies of the signal and idler modes are determined by the phase-matching condition, which is satisfied in a rather broad frequency range, and by the resonances of the cavity, which change with the cavity length. Consequently, in OPOs, the exact oscillation frequencies cannot be controlled very precisely, which can be a serious drawback. For example, the regime in which the signal and idler modes have exactly the same frequency, equal to half the pump frequency, is obviously very important to reach in metrology, but also in quantum optics where degenerate OPOs have many interesting quantum properties. Recently, Mason and Wong (1998) demonstrated experimentally that one can force the signal and idler modes of an OPO to oscillate at the same frequency by inserting a quarter-wave plate inside the OPO cavity that contains a type II phase-matched nonlinear crystal (with orthogonally polarized signal and idler). The aim of this presentation is to give a detailed theoretical analysis of this phenomenon.
The central theme of our programs has been to advance the understanding of optical and quantum co... more The central theme of our programs has been to advance the understanding of optical and quantum communication, radar, and sensing systems. Broadly speaking, this has entailed: (1) developing system-analytic models for important propagation, detection, and communication scenarios; (2) using these models to derive the fundamental limits on system performance; and (3) identifying, and establishing through experimentation the feasibility of, techniques and devices which can be used to approach these performance limits.
The central theme of our programs has been to advance the understanding of optical and quasioptic... more The central theme of our programs has been to advance the understanding of optical and quasioptical communication, radar, and sensing systems. Broadly speaking, this has entailed: (1) developing system-analytic models for important optical propagation, detection, and communication scenarios; (2) using these models to derive the fundamental limits on system performance; and (3) identifying and establishing through experimentation the feasibility of techniques and devices which can be used to approach these performance limits.
The central theme of our programs has been to advance the understanding of optical and quasioptic... more The central theme of our programs has been to advance the understanding of optical and quasioptical communication, radar, and sensing systems. Broadly speaking, this has entailed: (1) developing system-analytic models for important optical propagation, detection, and communication scenarios; (2) using these models to derive the fundamental limits on system performance; and (3) identifying, and establishing through experimentation the feasibility of, techniques and devices which can be used to approach these performance limits.
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Compu... more Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.Includes bibliographical references (leaves 55-56).by Elliott J. Mason, III.M.Eng
The central theme of our programs has been to advance the understanding of optical and quantum co... more The central theme of our programs has been to advance the understanding of optical and quantum communication, radar, and sensing systems. Broadly speaking, this has entailed: (1) developing system-analytic models for important propagation, detection, and communication scenarios; (2) using these models to derive the fundamental limits on system performance; and (3) identifying, and establishing through experimentation the feasibility of, techniques and devices which can be used to approach these performance limits.
Nonlinear optics plays a key role in many applications not only as a means of frequency synthesis... more Nonlinear optics plays a key role in many applications not only as a means of frequency synthesis and control, but also as a source of twin photons and other nonclas-sical states of light. Advances in nonlinear materials, including engineered nonlinear interactions through the use of quasi-phase matching, have increased the flexibility and performance of many nonlinear optical devices. One of the devices presented in this thesis is a 2:1 frequency divider based on self-phase locking in a type-II phase matched optical parametric oscillator. This device is investigated both theoretically and experimentally. Results are also presented on fabrication of periodically-poled nonlinear crystals for quasi-phase matching in lithium niobate and barium magnesium fluoride. Finally, a high-efficiency frequency-nondegenerate twin photon source is implemented in periodically-poled lithium niobate. Acknowledgments I am grateful to my thesis supervisor Dr. Franco Wong for advising me and supporting m...
We demonstrate efficient generation of highly nondegenerate photon pairs with a type-I phase-matc... more We demonstrate efficient generation of highly nondegenerate photon pairs with a type-I phase-matched, periodically-poled lithium niobate parametric downconverter. The signal photons at 800 nm and the idler photons at 1600 nm were generated in a collinear-propagation configuration with an inferred pair generation rate of 1.4×107/s/mW of pump power. Detection of a signal photon triggered a thermoelectrically cooled, 20%-efficient InGaAs avalanche photodiode for the detection of the 1600-nm conjugate idler photon. Using single-mode fibers as spatial mode filters, the signal-conditioned idler-detection probability was ∼3.1%.
Introduction The central theme of our programs has been to advance the understanding of optical a... more Introduction The central theme of our programs has been to advance the understanding of optical and quasi-optical communication, radar, and sensing systems. Broadly speaking, this has entailed: (1) developing system-analytic models for important optical propagation, detection, and communication scenarios; (2) using these models to derive the fundamental limits on system performance; and (3) identifying, and establishing through experimentation the feasibility of, techniques and devices which can be used to approach these performance limits.
We demonstrate an efficient fiber-coupled source of nondegenerate polarization entangled photons ... more We demonstrate an efficient fiber-coupled source of nondegenerate polarization entangled photons at 795 and 1609 nm using bidirectionally pumped parametric down-conversion in bulk periodically poled lithium niobate. The single-mode source has an inferred bandwidth of 50 GHz and a spectral brightness of 300 pairs/s/GHz/mW of pump power that is suitable for narrowband applications such as entanglement transfer from photonic to atomic qubits.
We demonstrate an efficient fiber-coupled source of nondegenerate polarization-entangled photons ... more We demonstrate an efficient fiber-coupled source of nondegenerate polarization-entangled photons at 795 and 1609nm using bidirectionally pumped parametric down-conversion in bulk periodically poled lithium niobate. The single-mode source has an inferred bandwidth of 50GHz and a spectral brightness of 300pairs/(sGHzmW) of pump power that is suitable for narrowband applications such as entanglement transfer from photonic to atomic qubits.
We demonstrate efficient generation of collinearly propagating, highly nondegenerate photon pairs... more We demonstrate efficient generation of collinearly propagating, highly nondegenerate photon pairs in a periodically-poled lithium niobate cw parametric downconverter with an inferred pair generation rate of 1.4*10^7/s/mW of pump power. Detection of an 800-nm signal photon triggers a thermoelectrically-cooled 20%-efficient InGaAs avalanche photodiode for the detection of the 1600-nm conjugate idler photon. Using single-mode fibers as spatial mode filters, we obtain a signal-conditioned idler-detection probability of about 3.1%.
We have analyzed the mode structure of the 800-nm signal output from a PPLN parametric downconver... more We have analyzed the mode structure of the 800-nm signal output from a PPLN parametric downconverter and achieved a signal-conditioned 1600-nm-idler detection probability of 5.2% with single-mode fiber coupling for both outputs.
We demonstrate efficient generation of collinearly propagating, highly nondegenerate photon pairs... more We demonstrate efficient generation of collinearly propagating, highly nondegenerate photon pairs in a periodically poled lithium niobate cw parametric downconverter with an inferred pair generation rate of 1.4 × 107/s/mW of pump power. Detection of an 800-nm signal photon triggers a thermoelectrically cooled 20%-efficient InGaAs avalanche photodiode for the detection of the 1600-nm conjugate idler photon. Using single-mode fibers as spatial mode filters, we obtain a signal-conditioned idler-detection probability of ~3.1%.
Summary form only given. When an optical parametric oscillator (OPO) is above threshold, the osci... more Summary form only given. When an optical parametric oscillator (OPO) is above threshold, the oscillator frequencies of the signal and idler modes are determined by the phase-matching condition, which is satisfied in a rather broad frequency range, and by the resonances of the cavity, which change with the cavity length. Consequently, in OPOs, the exact oscillation frequencies cannot be controlled very precisely, which can be a serious drawback. For example, the regime in which the signal and idler modes have exactly the same frequency, equal to half the pump frequency, is obviously very important to reach in metrology, but also in quantum optics where degenerate OPOs have many interesting quantum properties. Recently, Mason and Wong (1998) demonstrated experimentally that one can force the signal and idler modes of an OPO to oscillate at the same frequency by inserting a quarter-wave plate inside the OPO cavity that contains a type II phase-matched nonlinear crystal (with orthogonally polarized signal and idler). The aim of this presentation is to give a detailed theoretical analysis of this phenomenon.
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Papers by Elliott Mason