Conference Digest. 2000 Conference on Lasers and Electro-Optics Europe (Cat. No.00TH8505), 2000
Summary form only given. Extended-cavity diode lasers with diffraction gratings have been well de... more Summary form only given. Extended-cavity diode lasers with diffraction gratings have been well developed for atomic spectroscopy applications. Commercially available devices can be tuned over several nanometers without any mode hops allowing high resolution spectroscopy. Tuning over large intervals usually involves motors for moving the grating. This well controlled movement is necessarily slow. Smaller scans, over several tens of GHz, can be achieved via piezoelectric mounts and can therefore be cycled at rates as high as several hundreds of Hz. However such fast scans suffer from hysteresis and lack of reproducibility. Spectroscopic applications usually do not ask for fast scans. Still extended cavity diode lasers can prove useful in other fields. For such specifications an electro-optic crystal as the tuning element in the extended cavity is an attractive solution. In the existing devices, the electro-optic crystal can tune nothing but the cavity length. The tuning range is limited to one free spectral range of the extended cavity, before a mode hop occurs, and cannot therefore exceeds a few GHz. In addition increase of this range means shortening of the extended cavity length which rapidly increases the linewidth. The new design that we present allows very fast, highly linear and reproducible scans, without any mode hops, over several tens of GHz
IEEE Avionics, Fiber-Optics and Photonics Digest CD, 2012
ABSTRACT Following the increasing availability of reliable optical components, issued from the te... more ABSTRACT Following the increasing availability of reliable optical components, issued from the telecom domain, RF-optical links based on commercial modules have achieved performances which are close enough to system requirements to be extensively considered. With accurate understanding and modeling of these components, it has been demonstrated that RF photonics can be implemented to transmit and process RF signals in equipments. We report on recent progress concerning the development of several photonic modules to implement transmission of radar and EW signals in airborne environment.
Conference on Lasers and Electro-Optics (CLEO 2000). Technical Digest. Postconference Edition. TOPS Vol.39 (IEEE Cat. No.00CH37088), 2000
Summary form only given. Extended-cavity diode lasers with diffraction gratings have been well de... more Summary form only given. Extended-cavity diode lasers with diffraction gratings have been well developed for atomic spectroscopy applications. Commercially available devices can be tuned over several nanometers without any mode hops allowing high-resolution spectroscopy. Tuning over large intervals usually involves motors for moving the grating. This well controlled movement is necessarily slow. Smaller scans, over several tens of GHz, can be achieved via piezoelectric mounts and can therefore be cycled at rates as high as several hundreds of Hz. However such fast scans suffer from hysteresis and lack of reproducibility. Spectroscopic applications usually do not ask for fast scans and the commercially available extended cavity diode laser systems fulfill their needs in most cases. Still extended cavity diode lasers can prove useful in other fields. The new design that we present allows very fast, highly linear and reproducible scans, without any mode hops, over several tens of GHz
2006 International Topical Meeting on Microwave Photonics, 2006
The availability of optoelectronic components operating in the multi-gigahertz domain (up to 20 G... more The availability of optoelectronic components operating in the multi-gigahertz domain (up to 20 GHz) is very attractive for implementing basic optical processing functions of microwave signals such as spectrum analysis, adaptive filtering, and correlation suitable in radar and electronic communication systems. We present an optoelectronic free-space processor for filtering up-link and down-link signals in UMTS base stations. The system uses
International Topical Meeting on Microwave Photonics MWP-02, 2002
We demonstrate application of spectral hole burning to the spectral analysis of broadband radio f... more We demonstrate application of spectral hole burning to the spectral analysis of broadband radio frequency signals. The device operates on an optically carried RF signal and achieves the angular separation of the signal spectral components.
2012 IEEE International Topical Meeting on Microwave Photonics, 2012
ABSTRACT We report on the generation of a low phase noise millimeter-wave signal at 100 GHz with ... more ABSTRACT We report on the generation of a low phase noise millimeter-wave signal at 100 GHz with a dual-frequency laser and a high-speed photodiode. The laser beatnote is phase-locked on the 10th harmonics of a 10 GHz synthesizer through an original photonic down-conversion scheme. The spectral purity of the millimeter wave signal has been fully characterized: it is spurious free over a large bandwidth and its phase noise is limited by the synthesizer itself (-90 dBc/Hz at 10 kHz).
Summary form only given. Extended-cavity diode lasers with diffraction gratings have been well de... more Summary form only given. Extended-cavity diode lasers with diffraction gratings have been well developed for atomic spectroscopy applications. Commercially available devices can be tuned over several nanometers without any mode hops allowing high resolution spectroscopy. Tuning over large intervals usually involves motors for moving the grating. This well controlled movement is necessarily slow. Smaller scans, over several tens of GHz, can be achieved via piezoelectric mounts and can therefore be cycled at rates as high as several hundreds of Hz. However such fast scans suffer from hysteresis and lack of reproducibility. Spectroscopic applications usually do not ask for fast scans. Still extended cavity diode lasers can prove useful in other fields. For such specifications an electro-optic crystal as the tuning element in the extended cavity is an attractive solution. In the existing devices, the electro-optic crystal can tune nothing but the cavity length. The tuning range is limit...
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2014
ABSTRACT A new segmented silicon-array called MUSETT has been built for the study of heavy elemen... more ABSTRACT A new segmented silicon-array called MUSETT has been built for the study of heavy elements using the Recoil-Decay-Tagging technique. MUSETT is located at the focal plane of the VAMOS spectrometer at GANIL and is used in conjunction with a gamma-ray array at the target position. This paper describes the device, which consists of four 10 x 10 cm(2) Si detectors and its associated front-end electronics based on highly integrated ASICs electronics. The triggerless readout electronics, the data acquisition and the analysis tools developed for its characterization are presented. This device was commissioned at GANIL with the EXOGAM gamma-ray spectrometer using the fusion-evaporation reaction Au-197(Ne-22,(5)n)Ac-214. Additionally, the performance of the VAMOS Wien filter used during the in-beam commissioning is also reported.
We investigate a potentially large bandwidth / high resolution RF spectrum analyzer, based on spe... more We investigate a potentially large bandwidth / high resolution RF spectrum analyzer, based on spectral hole burning in Tm3+:YAG. With respect to our previous investigations, we strive to take advantage of recent advances in closed cycle cryogenics, fast scanning DFB lasers, and stable mechanical beam deflectors.
Abstract This paper reports on the potential of RF-MEMS technology to improve and miniaturize new... more Abstract This paper reports on the potential of RF-MEMS technology to improve and miniaturize new functions in Radar front end and antenna modules. The insertion of new MEMS components and subsystems, using RF-MEMS switches, filters and phase shifters, ...
ABSTRACT We report on 10 GHz operation of an all-optical gate based on an Indium Phosphide Photon... more ABSTRACT We report on 10 GHz operation of an all-optical gate based on an Indium Phosphide Photonic Crystal (PhC) Molecule. Wavelength conversion and all-optical mixing of microwave signals are demonstrated using the 2 mW output of a mode locked diode laser. The spectral separation of the optical pump and signal is crucial in suppressing optical cross-talk.
Conference Digest. 2000 Conference on Lasers and Electro-Optics Europe (Cat. No.00TH8505), 2000
Summary form only given. Extended-cavity diode lasers with diffraction gratings have been well de... more Summary form only given. Extended-cavity diode lasers with diffraction gratings have been well developed for atomic spectroscopy applications. Commercially available devices can be tuned over several nanometers without any mode hops allowing high resolution spectroscopy. Tuning over large intervals usually involves motors for moving the grating. This well controlled movement is necessarily slow. Smaller scans, over several tens of GHz, can be achieved via piezoelectric mounts and can therefore be cycled at rates as high as several hundreds of Hz. However such fast scans suffer from hysteresis and lack of reproducibility. Spectroscopic applications usually do not ask for fast scans. Still extended cavity diode lasers can prove useful in other fields. For such specifications an electro-optic crystal as the tuning element in the extended cavity is an attractive solution. In the existing devices, the electro-optic crystal can tune nothing but the cavity length. The tuning range is limited to one free spectral range of the extended cavity, before a mode hop occurs, and cannot therefore exceeds a few GHz. In addition increase of this range means shortening of the extended cavity length which rapidly increases the linewidth. The new design that we present allows very fast, highly linear and reproducible scans, without any mode hops, over several tens of GHz
IEEE Avionics, Fiber-Optics and Photonics Digest CD, 2012
ABSTRACT Following the increasing availability of reliable optical components, issued from the te... more ABSTRACT Following the increasing availability of reliable optical components, issued from the telecom domain, RF-optical links based on commercial modules have achieved performances which are close enough to system requirements to be extensively considered. With accurate understanding and modeling of these components, it has been demonstrated that RF photonics can be implemented to transmit and process RF signals in equipments. We report on recent progress concerning the development of several photonic modules to implement transmission of radar and EW signals in airborne environment.
Conference on Lasers and Electro-Optics (CLEO 2000). Technical Digest. Postconference Edition. TOPS Vol.39 (IEEE Cat. No.00CH37088), 2000
Summary form only given. Extended-cavity diode lasers with diffraction gratings have been well de... more Summary form only given. Extended-cavity diode lasers with diffraction gratings have been well developed for atomic spectroscopy applications. Commercially available devices can be tuned over several nanometers without any mode hops allowing high-resolution spectroscopy. Tuning over large intervals usually involves motors for moving the grating. This well controlled movement is necessarily slow. Smaller scans, over several tens of GHz, can be achieved via piezoelectric mounts and can therefore be cycled at rates as high as several hundreds of Hz. However such fast scans suffer from hysteresis and lack of reproducibility. Spectroscopic applications usually do not ask for fast scans and the commercially available extended cavity diode laser systems fulfill their needs in most cases. Still extended cavity diode lasers can prove useful in other fields. The new design that we present allows very fast, highly linear and reproducible scans, without any mode hops, over several tens of GHz
2006 International Topical Meeting on Microwave Photonics, 2006
The availability of optoelectronic components operating in the multi-gigahertz domain (up to 20 G... more The availability of optoelectronic components operating in the multi-gigahertz domain (up to 20 GHz) is very attractive for implementing basic optical processing functions of microwave signals such as spectrum analysis, adaptive filtering, and correlation suitable in radar and electronic communication systems. We present an optoelectronic free-space processor for filtering up-link and down-link signals in UMTS base stations. The system uses
International Topical Meeting on Microwave Photonics MWP-02, 2002
We demonstrate application of spectral hole burning to the spectral analysis of broadband radio f... more We demonstrate application of spectral hole burning to the spectral analysis of broadband radio frequency signals. The device operates on an optically carried RF signal and achieves the angular separation of the signal spectral components.
2012 IEEE International Topical Meeting on Microwave Photonics, 2012
ABSTRACT We report on the generation of a low phase noise millimeter-wave signal at 100 GHz with ... more ABSTRACT We report on the generation of a low phase noise millimeter-wave signal at 100 GHz with a dual-frequency laser and a high-speed photodiode. The laser beatnote is phase-locked on the 10th harmonics of a 10 GHz synthesizer through an original photonic down-conversion scheme. The spectral purity of the millimeter wave signal has been fully characterized: it is spurious free over a large bandwidth and its phase noise is limited by the synthesizer itself (-90 dBc/Hz at 10 kHz).
Summary form only given. Extended-cavity diode lasers with diffraction gratings have been well de... more Summary form only given. Extended-cavity diode lasers with diffraction gratings have been well developed for atomic spectroscopy applications. Commercially available devices can be tuned over several nanometers without any mode hops allowing high resolution spectroscopy. Tuning over large intervals usually involves motors for moving the grating. This well controlled movement is necessarily slow. Smaller scans, over several tens of GHz, can be achieved via piezoelectric mounts and can therefore be cycled at rates as high as several hundreds of Hz. However such fast scans suffer from hysteresis and lack of reproducibility. Spectroscopic applications usually do not ask for fast scans. Still extended cavity diode lasers can prove useful in other fields. For such specifications an electro-optic crystal as the tuning element in the extended cavity is an attractive solution. In the existing devices, the electro-optic crystal can tune nothing but the cavity length. The tuning range is limit...
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2014
ABSTRACT A new segmented silicon-array called MUSETT has been built for the study of heavy elemen... more ABSTRACT A new segmented silicon-array called MUSETT has been built for the study of heavy elements using the Recoil-Decay-Tagging technique. MUSETT is located at the focal plane of the VAMOS spectrometer at GANIL and is used in conjunction with a gamma-ray array at the target position. This paper describes the device, which consists of four 10 x 10 cm(2) Si detectors and its associated front-end electronics based on highly integrated ASICs electronics. The triggerless readout electronics, the data acquisition and the analysis tools developed for its characterization are presented. This device was commissioned at GANIL with the EXOGAM gamma-ray spectrometer using the fusion-evaporation reaction Au-197(Ne-22,(5)n)Ac-214. Additionally, the performance of the VAMOS Wien filter used during the in-beam commissioning is also reported.
We investigate a potentially large bandwidth / high resolution RF spectrum analyzer, based on spe... more We investigate a potentially large bandwidth / high resolution RF spectrum analyzer, based on spectral hole burning in Tm3+:YAG. With respect to our previous investigations, we strive to take advantage of recent advances in closed cycle cryogenics, fast scanning DFB lasers, and stable mechanical beam deflectors.
Abstract This paper reports on the potential of RF-MEMS technology to improve and miniaturize new... more Abstract This paper reports on the potential of RF-MEMS technology to improve and miniaturize new functions in Radar front end and antenna modules. The insertion of new MEMS components and subsystems, using RF-MEMS switches, filters and phase shifters, ...
ABSTRACT We report on 10 GHz operation of an all-optical gate based on an Indium Phosphide Photon... more ABSTRACT We report on 10 GHz operation of an all-optical gate based on an Indium Phosphide Photonic Crystal (PhC) Molecule. Wavelength conversion and all-optical mixing of microwave signals are demonstrated using the 2 mW output of a mode locked diode laser. The spectral separation of the optical pump and signal is crucial in suppressing optical cross-talk.
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Papers by L. Menager