Didier Perrodin - Profile on Academia.edu (original) (raw)

Papers by Didier Perrodin

Caractérisations de fibres monocristallines YAG dopées Yb produites par micro-pulling-down (µPD) pour applications lasers

Continuous wave and Q-switch laser operation in Nd:YAG single- crystal fiber grown by micro-pulling-down technique

Summary We present a significant breakthrough in laser operation with single crystal fibers grown... more Summary We present a significant breakthrough in laser operation with single crystal fibers grown by micro-pulling down technique. We achieved 10 W of continuous wave power and 360 kW of peak power at 1064 nm in a diode-pumped Nd:YAG fiber, for 60 W of pump power. A laser medium that would benefit from the spectroscopic and thermo-mechanical advantages of bulk crystals, and from the pump guiding and the good heat load repartition of doped glass fibers would be ideal for high average power and high peak power laser systems. This leads to the design of crystal fibers: long and thin crystals with a low doping concentration and pump guiding properties to dispatch the heat load along the active media. Micro-Pulling-Down (1) and Laser Heathed Pedestal Growth (2) are the two usual methods to manufacture such fibers, cheaper compared to other techniques (3). Up to now, the laser performances with such materials were limited due to low quality of the fibers, but thanks to recent improvements...

Oxide crystal-fibers grown by micro-pulling-down technique and applications for lasers and scintillators

Oxide-based Materials and Devices III, 2012

ABSTRACT We demonstrated growth of YAG, LuAG and CALGO single crystal fibers with doping Nd, Yb, ... more ABSTRACT We demonstrated growth of YAG, LuAG and CALGO single crystal fibers with doping Nd, Yb, Er, and Ce by the micro-pulling-down technique. Those fibers have applications in high power lasers and scintillating detectors. For laser operation, average power of 65 W energy of 4 mJ and peak power above 7 MW have been demonstrated in various configurations. Those results push the limits of end-pumped bulk crystals in terms of average power and exceed the limits of pulsed fibers lasers in terms of energy. For scintillating applications, high density/high light yield detectors are developed for nuclear science and medical applications.

High power laser based on Nd:YAG single-crystal fiber grown by micro-pulling-down technique

2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference, 2007

A 50 mm long and 1 mm diameter fiber-coupled laser-diode-pumped 0.2%-Nd doped YAG crystal fiber l... more A 50 mm long and 1 mm diameter fiber-coupled laser-diode-pumped 0.2%-Nd doped YAG crystal fiber laser is designed in this study. The crystal fibers with 98% optical transmission are obtained by cutting and polishing. Results show 12 ns optical pulse generation with an energy of 4.4 mJ at 1 kHz repetition rate in Q-switched operation.

High-power laser with Yb:YAG crystal fiber directly grown by the micro-pulling down technique

CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, 2009

ABSTRACT We present the demonstration of high average power laser emission in CW and Q-switched r... more ABSTRACT We present the demonstration of high average power laser emission in CW and Q-switched regime from a directly grown Yb:YAG crystal fiber. We designed the gain medium by the use of thermal dependant numerical simulations by taking into account the absorption saturation effects due to the quasi-three level behaviour of the Yb3+ transition. The crystal fiber is longitudinally pumped by a fiber-coupled laser diode with a maximum output power of 200 W at 940 nm.

Continuous wave and Q-switch laser operation in Nd: YAG single-crystal fiber grown by micro-pulling-down technique

Summary We present a significant breakthrough in laser operation with single crystal fibers grown... more Summary We present a significant breakthrough in laser operation with single crystal fibers grown by micro-pulling down technique. We achieved 10 W of continuous wave power and 360 kW of peak power at 1064 nm in a diode-pumped Nd:YAG fiber, for 60 W of pump power. A laser medium that would benefit from the spectroscopic and thermo-mechanical advantages of bulk

Laser à fibres cristallines dopées Nd et Yb: point sur les avancées récentes

Laser emission from an Yb: YAG Single Crystal Fiber grown by the Micro-Pulling Down technique

Dispositif à guide optique destiné à produire un signal optique par pompage optique, applications

11 YAG: Nd 3: µ-PD and Czochralski Growth and Properties

Module à gain laser et méthode de fabrication d'un tel module

Laser gain module and method for producing such a module

Advances in materials research, shaped crystal growth by micro-pulling-down technique

Caractérisations de fibres monocristallines YAG dopées Yb produites par micro-pulling-down (µPD) pour applications lasers

Micro-Pulling Down Nd:YAG Single Crystal Fibers for High Power Linearly Polarized CW and Q-Switched Lasers

Advanced Solid-State Photonics, 2008

ABSTRACT We achieved 16-W polarized and 20-W unpolarized cw power at 1064 nm for 120-W of pump po... more ABSTRACT We achieved 16-W polarized and 20-W unpolarized cw power at 1064 nm for 120-W of pump power and 360 kW peak power in the Q-Switched regime with Nd:YAG single-crystal fibers grown by micro-pulling-down technique.

First demonstration of laser emission from an Yb:YAG single crystal fiber grown by the micro-pulling down technique

2008 Conference on Lasers and Electro-Optics, 2008

An Ytterbium-doped gain laser medium that would benefit from the spectroscopic and thermal proper... more An Ytterbium-doped gain laser medium that would benefit from the spectroscopic and thermal properties of bulk crystals and the good thermal management of glass fiber will be an ideal candidate to achieve high average power and high peak power laser systems. With the ...

Journal of Instrumentation, 2013

The EndoTOFPET-US project aims to develop a multimodal detector to foster the development of new ... more The EndoTOFPET-US project aims to develop a multimodal detector to foster the development of new biomarkers for prostate and pancreatic tumors. The detector will consist of two main components: an external plate, and a PET extension to an endoscopic ultrasound probe. The external plate is an array of LYSO crystals read out by silicon photomultipliers (SiPM) coupled to an Application Specific Integrated Circuit (ASIC). The internal probe will be an highly integrated and miniaturized detector made of LYSO crystals read out by a fully digital SiPM featuring photosensor elements and digital readout in the same chip. The position and orientation of the two detectors will be tracked with respect to the patient to allow the fusion of the metabolic image from the PET and the anatomic image from the ultrasound probe in the time frame of the medical procedure. The fused information can guide further interventions of the organ, such as biopsy or in vivo confocal microscopy.

Continuous-Wave and Q-Switched Operation in Nd:YAG Single-Crystal Fiber Grown by Micro-Pulling-Down

Advanced Solid-State Photonics, 2007

ABSTRACT We present the first high power laser using single-crystal Nd:YAG fibers grown by micro-... more ABSTRACT We present the first high power laser using single-crystal Nd:YAG fibers grown by micro-pulling-down technique, producing 10-W CW power and 370-kW peak power in Q-switched regime for 60-W of pump power.

YAG:Nd3+: μ-PD and Czochralski Growth and Properties

Advances in Materials Research, 2007

ABSTRACT Y3Al5O12 (YAG) fiber-shaped single crystals about 1m long and 0.3-1.0 mm in diameter, in... more ABSTRACT Y3Al5O12 (YAG) fiber-shaped single crystals about 1m long and 0.3-1.0 mm in diameter, intended for laser applications, are discussed. Crystals with these dimensions are difficult to produce by simply cutting bulk crystals grown by the Czochralski technique or other related melt growth processes. The shape of the fibers permits the development of new optical components based on YAG crystals that have optical and thermal efficiencies that approach those of silica glass fibers. This chapter compares the physicochemical properties of YAG bulk and fiber crystals. The potential development of lasers based on single-crystalline fibers is discussed.

Towards Crystalline Electro-Optic Fibers For High-Voltage Sensing

Conference on Lasers and Electro-Optics 2012, 2012

ABSTRACT Single crystal Bi4Ge3O12 fibers for high-voltage sensing are grown using the micro-pulli... more ABSTRACT Single crystal Bi4Ge3O12 fibers for high-voltage sensing are grown using the micro-pulling down technique. Optimum growth conditions are determined and the fibers characterized as to their optical properties and performance under voltage.

Caractérisations de fibres monocristallines YAG dopées Yb produites par micro-pulling-down (µPD) pour applications lasers

Continuous wave and Q-switch laser operation in Nd:YAG single- crystal fiber grown by micro-pulling-down technique

Summary We present a significant breakthrough in laser operation with single crystal fibers grown... more Summary We present a significant breakthrough in laser operation with single crystal fibers grown by micro-pulling down technique. We achieved 10 W of continuous wave power and 360 kW of peak power at 1064 nm in a diode-pumped Nd:YAG fiber, for 60 W of pump power. A laser medium that would benefit from the spectroscopic and thermo-mechanical advantages of bulk crystals, and from the pump guiding and the good heat load repartition of doped glass fibers would be ideal for high average power and high peak power laser systems. This leads to the design of crystal fibers: long and thin crystals with a low doping concentration and pump guiding properties to dispatch the heat load along the active media. Micro-Pulling-Down (1) and Laser Heathed Pedestal Growth (2) are the two usual methods to manufacture such fibers, cheaper compared to other techniques (3). Up to now, the laser performances with such materials were limited due to low quality of the fibers, but thanks to recent improvements...

Oxide crystal-fibers grown by micro-pulling-down technique and applications for lasers and scintillators

Oxide-based Materials and Devices III, 2012

ABSTRACT We demonstrated growth of YAG, LuAG and CALGO single crystal fibers with doping Nd, Yb, ... more ABSTRACT We demonstrated growth of YAG, LuAG and CALGO single crystal fibers with doping Nd, Yb, Er, and Ce by the micro-pulling-down technique. Those fibers have applications in high power lasers and scintillating detectors. For laser operation, average power of 65 W energy of 4 mJ and peak power above 7 MW have been demonstrated in various configurations. Those results push the limits of end-pumped bulk crystals in terms of average power and exceed the limits of pulsed fibers lasers in terms of energy. For scintillating applications, high density/high light yield detectors are developed for nuclear science and medical applications.

High power laser based on Nd:YAG single-crystal fiber grown by micro-pulling-down technique

2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference, 2007

A 50 mm long and 1 mm diameter fiber-coupled laser-diode-pumped 0.2%-Nd doped YAG crystal fiber l... more A 50 mm long and 1 mm diameter fiber-coupled laser-diode-pumped 0.2%-Nd doped YAG crystal fiber laser is designed in this study. The crystal fibers with 98% optical transmission are obtained by cutting and polishing. Results show 12 ns optical pulse generation with an energy of 4.4 mJ at 1 kHz repetition rate in Q-switched operation.

High-power laser with Yb:YAG crystal fiber directly grown by the micro-pulling down technique

CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, 2009

ABSTRACT We present the demonstration of high average power laser emission in CW and Q-switched r... more ABSTRACT We present the demonstration of high average power laser emission in CW and Q-switched regime from a directly grown Yb:YAG crystal fiber. We designed the gain medium by the use of thermal dependant numerical simulations by taking into account the absorption saturation effects due to the quasi-three level behaviour of the Yb3+ transition. The crystal fiber is longitudinally pumped by a fiber-coupled laser diode with a maximum output power of 200 W at 940 nm.

Continuous wave and Q-switch laser operation in Nd: YAG single-crystal fiber grown by micro-pulling-down technique

Summary We present a significant breakthrough in laser operation with single crystal fibers grown... more Summary We present a significant breakthrough in laser operation with single crystal fibers grown by micro-pulling down technique. We achieved 10 W of continuous wave power and 360 kW of peak power at 1064 nm in a diode-pumped Nd:YAG fiber, for 60 W of pump power. A laser medium that would benefit from the spectroscopic and thermo-mechanical advantages of bulk

Laser à fibres cristallines dopées Nd et Yb: point sur les avancées récentes

Laser emission from an Yb: YAG Single Crystal Fiber grown by the Micro-Pulling Down technique

Dispositif à guide optique destiné à produire un signal optique par pompage optique, applications

11 YAG: Nd 3: µ-PD and Czochralski Growth and Properties

Module à gain laser et méthode de fabrication d'un tel module

Laser gain module and method for producing such a module

Advances in materials research, shaped crystal growth by micro-pulling-down technique

Caractérisations de fibres monocristallines YAG dopées Yb produites par micro-pulling-down (µPD) pour applications lasers

Micro-Pulling Down Nd:YAG Single Crystal Fibers for High Power Linearly Polarized CW and Q-Switched Lasers

Advanced Solid-State Photonics, 2008

ABSTRACT We achieved 16-W polarized and 20-W unpolarized cw power at 1064 nm for 120-W of pump po... more ABSTRACT We achieved 16-W polarized and 20-W unpolarized cw power at 1064 nm for 120-W of pump power and 360 kW peak power in the Q-Switched regime with Nd:YAG single-crystal fibers grown by micro-pulling-down technique.

First demonstration of laser emission from an Yb:YAG single crystal fiber grown by the micro-pulling down technique

2008 Conference on Lasers and Electro-Optics, 2008

An Ytterbium-doped gain laser medium that would benefit from the spectroscopic and thermal proper... more An Ytterbium-doped gain laser medium that would benefit from the spectroscopic and thermal properties of bulk crystals and the good thermal management of glass fiber will be an ideal candidate to achieve high average power and high peak power laser systems. With the ...

Journal of Instrumentation, 2013

The EndoTOFPET-US project aims to develop a multimodal detector to foster the development of new ... more The EndoTOFPET-US project aims to develop a multimodal detector to foster the development of new biomarkers for prostate and pancreatic tumors. The detector will consist of two main components: an external plate, and a PET extension to an endoscopic ultrasound probe. The external plate is an array of LYSO crystals read out by silicon photomultipliers (SiPM) coupled to an Application Specific Integrated Circuit (ASIC). The internal probe will be an highly integrated and miniaturized detector made of LYSO crystals read out by a fully digital SiPM featuring photosensor elements and digital readout in the same chip. The position and orientation of the two detectors will be tracked with respect to the patient to allow the fusion of the metabolic image from the PET and the anatomic image from the ultrasound probe in the time frame of the medical procedure. The fused information can guide further interventions of the organ, such as biopsy or in vivo confocal microscopy.

Continuous-Wave and Q-Switched Operation in Nd:YAG Single-Crystal Fiber Grown by Micro-Pulling-Down

Advanced Solid-State Photonics, 2007

ABSTRACT We present the first high power laser using single-crystal Nd:YAG fibers grown by micro-... more ABSTRACT We present the first high power laser using single-crystal Nd:YAG fibers grown by micro-pulling-down technique, producing 10-W CW power and 370-kW peak power in Q-switched regime for 60-W of pump power.

YAG:Nd3+: μ-PD and Czochralski Growth and Properties

Advances in Materials Research, 2007

ABSTRACT Y3Al5O12 (YAG) fiber-shaped single crystals about 1m long and 0.3-1.0 mm in diameter, in... more ABSTRACT Y3Al5O12 (YAG) fiber-shaped single crystals about 1m long and 0.3-1.0 mm in diameter, intended for laser applications, are discussed. Crystals with these dimensions are difficult to produce by simply cutting bulk crystals grown by the Czochralski technique or other related melt growth processes. The shape of the fibers permits the development of new optical components based on YAG crystals that have optical and thermal efficiencies that approach those of silica glass fibers. This chapter compares the physicochemical properties of YAG bulk and fiber crystals. The potential development of lasers based on single-crystalline fibers is discussed.

Towards Crystalline Electro-Optic Fibers For High-Voltage Sensing

Conference on Lasers and Electro-Optics 2012, 2012

ABSTRACT Single crystal Bi4Ge3O12 fibers for high-voltage sensing are grown using the micro-pulli... more ABSTRACT Single crystal Bi4Ge3O12 fibers for high-voltage sensing are grown using the micro-pulling down technique. Optimum growth conditions are determined and the fibers characterized as to their optical properties and performance under voltage.