Reliable 5 fs and EUV Generation with a One-Box Titanium Sapphire Amplifier

Achieve pulse widths shorter than 5 fs, generate EUV wavelengths down to 13 nm, and perform broadband two-dimensional spectroscopy scans lasting 48 hours with a turnkey, industrial-grade ultrafast amplifier.

LaserFousWorld Test
LaserFousWorld Test

In the world of ultrafast laser amplifiers and their applications, cutting edge operating regimes such as pulse widths < 5 fs and extreme ultraviolet (EUV) wavelengths < 50 nm have only been available in specialized laboratories with extensive laser expertise. That’s because there was a marked trade-off in commercial Ti:Sapphire systems between complexity and performance. Open architecture systems enabled access to the shortest pulse widths and highest pulse energies, but these systems required a knowledgeable “laser jock” in order to obtain optimum performance. Conversely, one-box integrated amplifiers provided much simpler ease of use, but usually at the expense of achieving cutting edge performance.

Article1 Astrella Fig1

Pulse widths as short as 5 fs are now routinely available using a turnkey Astrella amplifier from Coherent.

This has now changed with next-generation integrated amplifiers such as the Coherent Astrella, where higher energies and shorter pulse durations have largely closed the gap with more complex multi-box amplifiers. In conjunction with commercially available accessories, Astrella now provides turnkey access to operating parameters that were formerly only available in a handful of specialist laser labs. In this whitepaper we describe three applications that highlight the simplicity of reaching extreme performance together with industrial reliability.

A collaboration between Coherent, Professor John Tisch and Dr. Daniel Walke from Imperial College of London, and scientists from Sphere Ultrafast Photonics, shows how the Astrella amplifier to reach 5 fs pulse widths with pulse energies as high as 2 mJ.

Article1 Astrella Fig2

Generation of 13.5 nm EUV using a simple combination of Coherent Astrella and a commercial HHG unit filled with helium gas.

A collaboration between Coherent and K-M Labs demonstrates how to produce EUV wavelengths as short as 10 nm. Finally a study by Professor Wei Xiong at University of California, San Diego, illustrates a demanding 2D spectroscopy experiment requiring high laser output stability for up to 40 consecutive hours.

Article1 Fig3

2D spectroscopy studies using the Astrella amplifier enabled scientists to determine the orientation of a heterogeneous
CO2 reduction catalyst with potential importance in sustainable energy schemes.

> Download the full whitepaper to learn more!

More in Coherent Inc