For example, while many commercial diode products based on AlGaInP semiconductors exist for red wavelengths above 630 nm, few exist for the wavelengths below. The output wavelength is determined by properties of the semiconductor material inside the laser cavity, and for any given atomic or molecular transition, there may not be a corresponding diode available. However, a major limitation is the incomplete wavelength coverage of commercial laser diodes. The ECDL design can be used for diodes of any available wavelength, allowing individual diodes to be tuned continuously over tens of nanometers and extending the wavelength coverage of commercial laser diodes.ĭiode lasers are compact, robust optical sources with a broad range of applications in physics research. For two different diode models, single-mode operation is achieved with 38 mW output power at 616.8 nm and 69 mW at 622.6 nm, more than 15 nm below their ambient temperature free-running wavelengths. The laser system integrates temperature and diffraction grating feedback tunability for coarse and fine wavelength adjustments, respectively. Using a combination of multiple-stage thermoelectric cooling and water cooling, the operating temperature of a laser diode is lowered to −64 ☌, more than 85 ☌ below the ambient temperature. The performance achieved with multiple diode models addresses the scarcity of commercial red laser diodes below 633 nm, which is a wavelength range relevant to the spectroscopy of many molecules and ions. 56, 155–159 (2023).We report on the design and characterization of a low-temperature external cavity diode laser (ECDL) system for broad wavelength tuning. Experimental setup for high-resolution characterization of crystal optics for coherent X-ray beam applications. Goniometric and topographic characterization of synthetic IIa diamonds. Small Bragg-plane slope errors revealed in synthetic diamond crystals. An experiment of X-ray photon-photon elastic scattering with a Laue-case beam collider. of the Free Electron Laser Conference THOBNO02 (eds Scholl, C. Transverse gradient undulators for a storage ring x-ray FEL oscillator. Misalignment effects on the performance and stability of X-ray free-electron laser oscillator. Signatures of misalignment in X-ray cavities of cavity-based X-ray free-electron lasers. ![]() The dynamics of synchrotron with straight sections. Optical guiding in a free-electron laser. Dynamical Theory of X-ray Diffraction (Oxford Univ. A compound refractive lens for focusing high-energy X-rays. Wavefront preserving and high efficiency diamond grating beam splitter for X-ray free electron laser. All-diamond optical assemblies for a beam-multiplexing X-ray monochromator at the Linac Coherent Light Source. Performance of a beam-multiplexing diamond crystal monochromator at the Linac Coherent Light Source. The X-ray Pump-Probe instrument at the Linac Coherent Light Source. Crystal cavity resonance for hard X-rays: a diffraction experiment. HPHT synthesis and crystalline quality of large high-quality (001) and (111) diamond crystals. Cavity based X-ray free electron laser demonstrator at the European X-ray Free Electron Laser facility. of the Free Electron Laser Conference TUD04 (eds Decking, W. Cavity-based free-electron laser research and development: a joint Argonne National Laboratory and SLAC National Laboratory collaboration. Population inversion X-ray laser oscillator. A proposal for an X-ray free-electron laser oscillator with an energy-recovery linac. of the Free Electron Laser Conference, TUP032 Vol. Regenerative amplification for a hard X-ray free-electron laser. Refractive guide switching a regenerative amplifier free-electron laser for high peak and average power hard X-rays. Fully coherent X-ray pulses from a regenerative-amplifier free-electron laser. Cascaded hard X-ray self-seeded free-electron laser at MHz-repetition-rate. High-brightness self-seeded X-ray free-electron laser covering the 3.5 keV to 14.6 keV range. Generation of narrow-band X-ray free-electron laser via reflection self-seeding. Demonstration of single-crystal self-seeded two-color X-ray free-electron lasers. 36th International Free Electron Laser Conference, TUC01 (eds Chrin, J. Hard X-ray self-seeding set-up and results at SACLA. Demonstration of self-seeding in a hard-X-ray free-electron laser. Synchrotron Radiation and Free-Electron Lasers: Principles of Coherent X-Ray Generation (Cambridge Univ. Collective instabilities and high-gain regime in a free electron laser. Generation of coherent radiation by a relativistic electron beam in am undulator. Proposal for a free electron laser in the X-ray region. X-ray interferometry with microelectronvolt resolution. Storage of X-ray photons in a crystal resonator. ![]() Dynamics of the Duke storage ring UV FEL. First operation of a free-electron laser. Stimulated emission of bremsstrahlung in a periodic magnetic field.
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