Ultraviolet femtosecond pulses: Key technology for sub-micron machining and efficient XUV pulse generation
نویسندگان
چکیده
A new scheme to increase the extractable energy from a table-top KrF amplifier up to 100 mJ/pulse is presented. Applications of such pulses for micro-machining and for the generation of powerful XUV radiation are demonstrated. PACS 42.60.Da; 42.65.Ky; 81.40.-z
منابع مشابه
Control of multiphoton and avalanche ionization using an ultraviolet- infrared pulse train in femtosecond laser micro-/nano-machining of fused silica
We report on the experimental results of microand nanostructures fabricated on the surface of fused silica by a train of two femtosecond laser pulses, a tightly focused 266 nm (ultraviolet, UV) pulse followed by a loosely focused 800 nm (infrared, IR) pulse. By controlling the fluence of each pulse below the damage threshold, microand nanostructures are fabricated using the combined beams. The ...
متن کاملInvestigation of the XUV Emission from the Interaction of Intense Femtosecond Laser Pulses with Solid Targets
The generation of coherent high-order harmonics from the interaction of ultra-intense femtosecond laser pulses with solid density plasmas holds the promise for table-top sources of intense extreme ultraviolet (XUV) and soft x-ray (SXR) radiation. Furthermore, they give rise to the prospect of combining the attosecond pulse duration of conventional gas-harmonic sources with the photon ux current...
متن کاملAttosecond Physics – From Generation of as Pulses to Applications on Solids
The generation of ever shorter pulses is a key to exploring the dynamic behavior of matter on ever shorter time scales. Attosecond XUV pulses together with the few-cycle (few-femtosecond) laser pulses used for their generation have opened the way to the development of a technique for attosecond sampling of electrons ejected from atoms or molecules or solids [1]. This is accomplished by probing ...
متن کاملSplit-pulse spectrometer for absolute XUV frequency measurements.
A split-pulse spectrometer based on pairs of time-delayed femtosecond pulses can give access to accurate frequency measurements in the extreme ultraviolet (XUV) spectral domain. We demonstrate this approach by measuring the absolute frequency of a single-XUV-photon transition to a bound state of atomic argon excited with the ninth harmonic of an amplified Ti:sapphire laser.
متن کاملFemtosecond laser nanomachining initiated by ultraviolet multiphoton ionization.
We report on the experimental results of 300 nm features generated on fused silica using a near-infrared (IR) femtosecond laser pulse initiated by an ultraviolet (UV) pulse. With both pulses at a short (~60 fs) delay, the damage threshold of the UV pulse is only 10% of its normal value. Considerable reduction of UV damage threshold is observed when two pulses are at ± 1.3 ps delay. The damage f...
متن کامل