Advanced Solid State Lasers

16 - 21 11月 2014
Hilton Shanghai Hongqiao, Shanghai, China

Short Courses

Short Courses cover a broad range of topic areas at a variety of educational levels (introductory to advanced). The courses are taught by highly regarded industry experts in a variety of specialties. Short Courses are an excellent opportunity to learn about new products, cutting-edge technology and vital information at the forefront of your field. They are designed to increase your knowledge of a specific subject while offering you the experience of knowledgeable teachers.

Certificate of Attendances are available for those who register and attend a course. To request a Certificate of Attendance after the conference, please email with your name, the course name, conference name, and year.
Each Short Course requires a separate fee. Paid registration includes admission to the course and one copy of the Short Course Notes. Advance registration is advisable. The number of seats in each course is limited, and on-site registration is not guaranteed.

Short courses will be offered on Sunday, 16 November. The short course schedule will be avaiable in the upcoming weeks.

2014 ASSL Short Courses

SC290 High Power Fiber Lasers and Amplifiers

SC419 Crystal Parametric Nonlinear Optics: Modelling, Materials and Devices

2014 Short Course Descriptions

SC290 High Power Fiber Lasers and Amplifiers

Johan Nilsson; Univ. of Southampton, UK

Course Level
Advanced Beginner (basic understanding of topic is necessary to follow course material)

Course Description: This course describes the principles and capabilities of high power fiber lasers and amplifiers, with output powers that can exceed a kilowatt. It describes the fundamentals of such devices and discusses current state of the art and research directions of this rapidly advancing field. Fiber technology, pump laser requirements and input coupling will be addressed. Rare-earth-doped fiber devices are the focus of the course, but Raman lasers and amplifiers will be considered, too, if time allows. This includes Yb-doped fibers at 1.0 - 1.1 μm, Er-doped fibers at 1.5 - 1.6 μm, and Tm-doped fibers at around 2 μm. Operating regimes extending from continuous-wave single-frequency to short pulses will be considered. Key equations will be introduced to find limits and identify critical parameters. For example, pump brightness is a critical parameter for some devices in some regimes but not always. Important limitations relate to nonlinear and thermal effects, as well as damage, energy storage and, of course, materials. Methods to mitigate limitations in different operating regimes will be discussed. Fiber, laser and amplifiers designs for different operating regimes will be described.

Benefits and Learning Objectives:
  • Describe the fundamentals of high power fiber lasers and amplifiers.
  • List key strengths, relative merits, and specific capabilities of high power fiber lasers and amplifiers.
  • Assess performance limitations and describe the underlying physical reasons in different operating regimes.
  • Design or specify basic fiber properties for specific operating regimes.
  • Describe the possibilities, limitations, and implications of current technology regarding core size and rare earth concentration of doped fibers.
  • Discuss different options for suppressing detrimental nonlinearities.
  • Design basic high power fiber lasers and amplifier systems.
  • List strengths and weaknesses of different pumping schemes.
Intended Audience: This course is intended for scientists and engineers involved or interested in commercial and military high power fiber systems. This includes system designers, laser designers, fiber fabricators, and users. A basic knowledge of fibers and lasers is needed.
Biography: Johan Nilsson is a professor in the Optoelectronics Research Centre (ORC), University of Southampton, England. He received a doctorate in engineering sciences from the Royal Institute of Technology, Stockholm, Sweden, in 1994, for research on optical amplification. Since then, he has worked on optical amplifiers and amplified lightwave systems, optical communications, guided-wave lasers and nonlinear optics, first at Samsung Electronics and now at the ORC, where he is leading a research group in the field of high-power fiber devices and applications. His research has primarily focused on devices but has also covered system, fabrication and materials aspects. He has given courses on high-power fiber sources at conferences such as Photonics West, ASSP, and OFC.

SC419 Crystal Parametric Nonlinear Optics: Modelling, Materials and Devices
Benoit Boulanger, Grenoble Univ., CNRS-NEEL Institute, France
Course Level
Course Description
This lecture focuses on fundamental crystal parametric optics that is one of the most fascinating field of nonlinear optics involving corpuscular and wave aspects of light in strong interaction with the electrons of matter, and leading to optical frequency synthesis and mixing at the origin of numerous applications.
  • Constitutive relations and Maxwell equations.
  • Classification of the nonlinear interactions through the corpuscular approach: fusion and splitting involving three or four photons, spontaneous and stimulated processes.
  • Calculation of the electric susceptibility by Lorentz model: perturbation approach leading to the definition of the different orders of the electric susceptibility, wavelength dispersion, intrinsic symmetries (Kleinman and ABDP), implications of spatial symmetry on the susceptibility tensors (Neumann principle).
  • Tensor algebra and calculation of the first, second and third order polarizations.
  • Modelling of the macroscopic nonlinearities of matter from the microscopic scale using the bond charge model and ab initio calculation, Miller index.
  • Basics in linear crystal optics: propagation equation, index surface, birefringence, double refraction, eigenmodes.
  • Amplitude equations in the nonlinear regime, Manley-Rowe relations.
  • Calculation of the effective coefficient based on the field tensor formalism.
  • Types and topology of collinear and non-collinear Birefringence Phase-matching and Quasi-Phase-Matching in bulk media and whispering-gallery-mode resonators.
  • Conversion efficiency calculation of second harmonic generation (SHG), direct and cascaded third harmonic generation (THG), and optical parametric interactions: fluorescence, amplification (OPA), chirped pulse amplification (OPCPA), generation (OPG), oscillation (OPO).
  • Angular, spectral and thermal acceptances.
  • Spatial and temporal walk-off effects.
  • Techniques of characterization of nonlinear crystals for the determination of phase-matching and quasi-phase-matching loci, magnitude and relative signs of the nonlinear coefficients, acceptances.
  • The main materials for parametric generation, from ultraviolet to THz.
Benefits and Learning Objectives
This new course aims at giving guidelines and tools for the design, characterization and use of crystals for parametric generation. This course should enable participants to :
  • Explain the main lines and key parameters of fundamental crystal parametric optics
  • Compare the figures of merit of various nonlinear materials
  • Compute phase-matching directions, quasi-phase-matching periodicities, angular and spectral acceptances, effective coefficients, conversion efficiencies
  • Measure nonlinear coefficients, phase-matching directions, spectral and angular acceptances, a figure of merit, a conversion efficiency
  • Define the relevant parameters for the design of new nonlinear crystal
  • List the main nonlinear materials enabling parametric generation
  • Identify the right crystal corresponding to the targeted application
  • Design up-conversion and down-conversion parametric devices
Intended Audience
This course is specifically built for physicists as well as chemists interested in crystal parametric optics: crystal growers and designers wanting to identify the relevant parameters, laser physicists aiming at working in nonlinear optics or users willing to go deeper in the field at the frontier of crystal physics,  coming from industry or universities and other academic institutes. Various job levels are concerned: PhD students, postdocs, engineers, researchers, professors. The basics of electromagnetism, solid state and laser physics are recommended.
Instructor Biography
Benoit Boulanger is Professor at Grenoble University and CNRS - Néel Institute. He has authored over 180 papers in refereed journals and conference proceedings. His work is at the frontiers between nonlinear crystal optics, material engineering and quantum optics. His main achievements concern the crystal growth of KTP compounds, the development of the field factor formalism, the invention of the sphere method, the understanding of gray-tracking in KTP, the development of angular-quasi-phase-matching, and the first demonstration of triple photon generation. Benoit Boulanger is Fellow of OSA and EOS since 2012, he was general co-chair of Non Linear Optics / OSA – Hawaii 2013, and he is Topical Editor for Optics Letters since 2014.