Apparatus and Method for Producing and Detecting Laser Pulses Whose Amplitude, Phase and Polarization Have Been Shaped

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This invention provides an apparatus and method for producing and detecting laser pulses whose amplitude, phase, and polarization can be shaped independently. It enables precise and flexible control of ultrafast laser pulses (especially femtosecond pulses) by splitting a laser pulse into its spectral components, modulating each one's phase, amplitude, and polarization separately via advanced modulator elements and polarizing elements, then recombining them. The invention also covers a method and system for analyzing these shaped pulses, helping users to tailor laser characteristics for specific scientific or industrial needs.

Use CasesContent extracted from patent full text and abstract with AI.

• Spectroscopy and advanced materials analysis, such as Laser-Induced Breakdown Spectroscopy (LIBS).
• Femtochemistry or femtobiology research, where tailored pulse shapes control molecular reactions.
• Precision micro-/nano-machining and materials processing with optimized laser effects.
• Quantum control experiments or quantum information transfer using custom-encoded pulses.
• Advanced medical procedures, such as selective eye or skin treatments with minimal collateral damage.
• Selective excitation or breaking of chemical bonds, enabling controlled isomerization or enantiomer conversion in molecules.
• Communication systems using laser pulses with information encoded in amplitude, phase, and polarization.

BenefitsContent extracted from patent full text and abstract with AI.

• Enables complete, independent control of all key laser pulse characteristics (amplitude, phase, polarization), overcoming previous technical limitations.
• Improves measurement and detection fidelity for complex shaped pulses, allowing accurate feedback and optimization.
• Broadens the range of applications by permitting pulse shapes tailored to very specific interaction dynamics, maximizing process efficiency or selectivity.
• Facilitates more intuitive and efficient adjustment or optimization via software interfaces and parametric definitions.
• Supports iterative or algorithmic optimization (including machine learning/evolutionary algorithms) to discover the best pulse shapes automatically for a given process or experiment.
• Enables the encoding and transmission of more information per pulse for communication purposes.
• Supports cutting-edge ultrafast science with better control of light-matter interactions, leading to new discoveries in chemistry, biology, and physics.

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Inventors & Applicants

Patent Abstract

The invention relates to an apparatus for producing shaped laser pulses, said apparatus having a pulse shaper through which a laser pulse to be shaped passes and which has at least one modulator element that is arranged in the beam path of the laser pulse, wherein the pulse shaper is designed to separate the laser pulse to be shaped into its spectral components, to supply the spectral components to the at least one modulator element and to then recombine them to form a shaped laser pulse, and the at least one modulator element is designed to set the polarization of the spectral components of the laser pulse. In this case, the invention is characterized in that the pulse shaper (10) additionally has at least one polarizing element (120, 121), which is arranged in the beam path (S) of the laser pulse (L, Lx, Ly), and is designed and provided for the purpose of shaping the amplitude, phase and polarization of the laser pulse (L) independently of one another using the at least one modulator element (a, b, c, d, e, f, ax, ay, bx, by) and the at least one polarizing element (120, 121). In addition, the invention also relates to a method for producing shaped laser pulses and to a method for detecting shaped laser pulses. The invention thus achieves the object of providing an apparatus and a method which can be used to optimally shape short laser pulses.