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High Repetition Rate Collisional Soft X Ray Lasers Based On Grazing Incidence Pumping
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Book Synopsis High Repetition Rate Collisional Soft X-ray Lasers Based on Grazing Incidence Pumping by :
Download or read book High Repetition Rate Collisional Soft X-ray Lasers Based on Grazing Incidence Pumping written by and published by . This book was released on 2005 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: We discuss the demonstration of gain-saturated high repetition rate table-top soft x-ray lasers producing microwatt average powers at wavelengths ranging from 13.9 to 33 nm. The results were obtained heating a pre-created plasma with a picosecond optical laser pulse impinging at grazing incidence onto a pre-created plasma. This pumping geometry increases the energy deposition efficiency of the pump beam into the gain region, making it possible to saturate soft x-ray lasers in this wavelength range with a short pulse pump energy of only 1 J at 800 nm wavelength. Results corresponding to 5 Hz repetition rate operation of gain-saturated 14.7 nm Ni-like Pd and 32.6 nm line Ne-like Ti lasers pumped by a table-top Ti:sapphire laser are reported. We also discuss results obtained using a 1 [omega] 1054 nm pre-pulse and 2[omega] 527 nm short pulse from a Nd:glass pump laser. This work demonstrates the feasibility of producing compact high average power soft x-ray lasers for applications.
Book Synopsis High Repetition Rate Grazing Incidence Pumped X-ray Laser Operating at 18.9 Nm by :
Download or read book High Repetition Rate Grazing Incidence Pumped X-ray Laser Operating at 18.9 Nm written by and published by . This book was released on 2004 with total page 103901 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have demonstrated a 10 Hz Ni-like Mo X-ray laser operating at 18.9 nm with 150 mJ total pump energy by employing a novel pumping scheme. The grazing incidence scheme is described, where a picosecond pulse is incident at a grazing angle to a Mo plasma column produced by a slab target irradiated by a 200 ps laser pulse. This scheme uses refraction of the short pulse at a pre-determined electron density to increase absorption to pump a specific gain region. The high efficiency inherent to this scheme allows a reduction in the pump energy where 70 mJ long pulse energy and 80 mJ short pulse energy are sufficient to produce lasing at a 10 Hz repetition rate. Under these conditions and by optimizing the delay between the pulses, we achieve strong amplification and saturation for 4 mm long targets.
Book Synopsis Grazing Incidence Pumping for High Efficiency X-ray Lasers by : J. Dunn
Download or read book Grazing Incidence Pumping for High Efficiency X-ray Lasers written by J. Dunn and published by . This book was released on 2005 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last decade, most laser-driven collisional excitation x-ray lasers have relied on the absorption of the pump energy incident at normal incidence to a pre-formed plasma. The main advantage is that the inversion can be created at various plasma regions in space and time where the amplification and ray propagation processes are best served. The main disadvantage is that different plasma regions regardless of the contribution to the inversion have to be pumped simultaneously in order to make the laser work. This leads to a loss of efficiency. The new scheme of grazing incidence pumping (GRIP) addresses this issue. In essence, a chosen electron density region of a pre-formed plasma column, produced by a longer pulse at normal incidence onto a slab target, is selectively pumped by focusing a short pulse of 100 fs-10 ps duration laser at a determined grazing incidence angle to the target surface. The exact angle is dependent on the pump wavelength and relates to refraction of the drive beam in the plasma. The controlled use of refraction of the pumping laser in the plasma results in several benefits: The pump laser path length is longer and there is an increase in the laser absorption in the gain region for creating a collisional Ni-like ion x-ray laser. There is also an inherent traveling wave, close to c, that increases the overall pumping efficiency. This can lead to a 3-30 times reduction in the pump energy for mid-Z, sub-20 nm lasers. We report several examples of this new x-ray laser on two different laser systems. The first demonstrates a 10 Hz x-ray laser operating at 18.9 nm pumped with a total of 150 mJ of 800 nm wavelength from a Ti:Sapphire laser. The second case is shown where the COMET laser is used both at 527 nm and 1054 nm wavelength to pump higher Z materials with the goal of extending the wavelength regime of tabletop x-ray lasers below 10 nm.
Book Synopsis Grazing Incidence Pumping for Efficient X-ray Lasers by : R. F. Smith
Download or read book Grazing Incidence Pumping for Efficient X-ray Lasers written by R. F. Smith and published by . This book was released on 2004 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report progress in developing efficient pumping of laser-driven x-ray lasers that opens new possibilities for both high average power x-ray lasers as well as producing progressively shorter wavelength lasers. The new scheme of grazing incidence pumping (GRIP) is described. In essence, a chosen electron density region of a pre-formed plasma column, produced by a longer pulse at normal incidence onto a slab target, is selectively pumped by focusing the short pulse {approx}ps laser at a determined grazing incidence angle to the target. The controlled use of refraction of the pumping laser in the plasma results in several benefits: The pump laser path length is longer and there is an increase in the laser absorption in the gain region for creating a collisional Ni-like ion x-ray laser. There is also an inherent traveling wave, close to c, that increases the overall pumping efficiency. The scheme requires careful tailoring of the pump and plasma conditions to the specific x-ray laser under investigation but the main advantage is a 3 - 30 times reduction in the laser pump energy for mid-Z materials. We report several examples of this new x-ray laser on two different laser systems. The first demonstrates a 10 Hz x-ray laser operating at 18.9 nm pumped with a total of 150 mJ of 800 nm wavelength from a Ti:Sapphire laser. The second case is shown where the COMET laser is used both at 527 nm and 1054 nm wavelength to pump higher Z materials with the goal of extending the wavelength regime of tabletop x-ray lasers below 10 nm.
Download or read book X-ray Lasers ... written by and published by . This book was released on 1990 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book X-Ray Lasers 2006 written by P.V. Nickles and published by Springer Science & Business Media. This book was released on 2008-01-18 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt: The search for table-top and repetitive pump schemes during the last decade has been the driving force behind the spectacular advances demonstrated during the 10th International Conference on X-Ray Lasers, organized in 2006 in Berlin. The proceedings of this series of conferences constitute a comprehensive source of reference of the acknowledged state-of the-art in this specific area of laser and plasma physics.
Book Synopsis Efficient Pumping Schemes for High Average Brightness Collisional X-ray Lasers by : R. F. Smith
Download or read book Efficient Pumping Schemes for High Average Brightness Collisional X-ray Lasers written by R. F. Smith and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in transient collisional x-ray lasers have been demonstrated over the last 5 years as a technique for achieving tabletop soft x-ray lasers using 2-10 J of laser pump energy. The high peak brightness of these sources operating in the high output saturation regime, in the range of 10{sup 24}-10{sup 25} ph. mm{sup -2} mrad{sup -2} s-1 (0.1% BW){sup -1}, is ideal for many applications requiring high photon fluence in a single short burst. However, the pump energy required for these x-ray lasers is still relatively high and limits the x-ray laser repetition rate to 1 shot every few minutes. Higher repetition rate collisional schemes have been reported and show some promise for high output in the future. We report a novel technique for enhancing the coupling efficiency of the laser pump into the gain medium that could lead to enhanced x-ray inversion with a factor of ten reduction in the drive energy. This has been applied to the collisional excitation scheme for Ni-like Mo at 18.9 nm and x-ray laser output has been demonstrated. Preliminary results show lasing on a single shot of the optical laser operating at 10 Hz and with 70 mJ in the short pulse. Such a proposed source would have higher average brightness, {approx}10{sup 14} ph. mm{sup -2} mrad{sup -2} s{sup -1} (0.1% BW){sup -1}, than present bending magnet 3rd generation synchrotron sources operating at the same spectral range.
Download or read book X-Ray Lasers 2008 written by Ciaran Lewis and published by Springer Science & Business Media. This book was released on 2009-09-29 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 11th International Conference on X-Ray Lasers had contributions in the following topical areas: Transient Collisional X-Ray Lasers, Table-Top High Repetition Rate X-Ray Lasers, Optical-Field Ionised (OFI) X-Ray Lasers, Theory and Simulation of X-Ray Lasers, High Order Harmonic Generation, XUV Optics and X-Ray Laser Applications, Capillary Discharge X-Ray Lasers, Alternative Sources of coherent XUV Radiation. The proceedings of this conference constitute a comprehensive source of reference for scientists involved in researching the development and application of coherent X-Ray sources.
Download or read book X-Ray Lasers 2004 written by J Zhang and published by CRC Press. This book was released on 2005-06-15 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: X-Ray Lasers 2004 comprises invited, contributed, and poster papers presented at the 9th International Conference on X-Ray Lasers (ICXRL2004) held in Beijing in May 2004. Some 120 participants from 13 countries and regions met in Beijing to compare results and exchange views on future developments in x-ray lasers and related fields. The book covers the following topics: overviews of x-ray lasers research, collisionally pumped x-ray lasers, capillary discharge-pumped x-ray lasers, OFI and photo-pumped x-ray lasers, high-order harmonics XUV radiation, grazing incidence pumping x-ray lasers, theory and simulations of x-ray lasers and plasma media, free-electron lasers and accelerator-based x-ray sources, alternative pumping schemes for x-ray lasers, applications of x-ray lasers and other bright x-ray sources, x-ray optics and instrumentation, investigations of x-ray laser media, and developments of x-ray laser drivers. X-Ray Lasers 2004 provides not only an overview and an up-to-date progress report on this fast moving field, but also important reference material on which future work can be built.
Book Synopsis Experimental Study of Saturated Ni-like Soft-x-ray Lasers Using Grazing-incidence Pumping by : Christoph Imesch
Download or read book Experimental Study of Saturated Ni-like Soft-x-ray Lasers Using Grazing-incidence Pumping written by Christoph Imesch and published by . This book was released on 2008 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Grazing Incidence Pumped Zr X-ray Laser for Spectroscopy on Li-like Ions by : Daniel Ursescu
Download or read book Grazing Incidence Pumped Zr X-ray Laser for Spectroscopy on Li-like Ions written by Daniel Ursescu and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Saturated High Repetition Rate Soft X-ray Lasers by : Yong Wang
Download or read book Saturated High Repetition Rate Soft X-ray Lasers written by Yong Wang and published by . This book was released on 2007 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: These high repetition rate short wavelength lasers will make possible a variety of new studies of surfaces and materials, and enable the development of unique metrology and processing tools for industry.
Book Synopsis Development of a Very Compact High Repetition Rate Soft X-ray Laser by : Federico Juan Antonio Furch
Download or read book Development of a Very Compact High Repetition Rate Soft X-ray Laser written by Federico Juan Antonio Furch and published by . This book was released on 2010 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Study of Staturated Ni-like Soft-x-ray Lasers Using Grazing-incidence Pumping by : Christoph Imesch
Download or read book Experimental Study of Staturated Ni-like Soft-x-ray Lasers Using Grazing-incidence Pumping written by Christoph Imesch and published by . This book was released on 2008 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A 10 Hz Grazing Incidence Pumped Ni-like Mo Laser at 18.9 Nm with 150 MJ Pump Energy by : R. F. Smith
Download or read book A 10 Hz Grazing Incidence Pumped Ni-like Mo Laser at 18.9 Nm with 150 MJ Pump Energy written by R. F. Smith and published by . This book was released on 2004 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first demonstration of the grazing incidence pumping (GRIP) scheme for laser-driven x-ray lasers (XRLs) is described utilizing 2-pulse pumping. A long pulse is incident normal to the target to produce a plasma with a particular density profile. Then a short pulse is incident at a grazing angle, chosen to optimally couple the short pulse laser energy into the specific density region where the inversion process will occur. The short pulse is simultaneously absorbed and refracted at a maximum electron density specified by the chosen pump angle then turns back into the gain region. The increased path length gives improved absorption allowing a reduction in the drive energy required for lasing. A Ni-like Mo XRL at 18.9 nm has been demonstrated with only 150 mJ total pump energy and a repetition rate of 10 Hz. We report high gains of 60 cm{sup -1} and the achievement of gain saturation for targets of 4 mm length.
Download or read book X-Ray Lasers 2010 written by Jongmin Lee and published by Springer Science & Business Media. This book was released on 2012-06-01 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a thorough account of the current status of achievements made in the area of soft X-Ray laser source development and of the increasingly diverse applications being demonstrated using such radiation sources. There is significant effort worldwide to develop very bright, short duration radiation sources in the X-Ray spectral region – driven by the multitude of potential applications in all branches of science. This book contains updates on several different approaches for comparative purposes but concentrates on developments in the area of laser-produced plasmas, whereby transient population inversion and gain between ion states is pumped by optical lasers interacting with pre-formed plasmas. Topics covered will include Laser-driven XRLs, Collisional XRLs, Recombination XRLs, Transient Inversion Collisional XRLs, Optical Field Ionization XRLs, Alternative XRL, pumping schemes Theory and simulations of XRL gain media and beam properties High order harmonic sources of XUV radiation, Free-electron lasers and other accelerator based X-Ray sources, X-Ray Laser drives, X-Ray optics and instrumentation Spectroscopy, and other diagnostics of laser media Applications of XRLs.
Download or read book X-Ray Lasers 2008 written by Ciaran Lewis and published by Springer. This book was released on 2009-07-29 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 11th International Conference on X-Ray Lasers had contributions in the following topical areas: Transient Collisional X-Ray Lasers, Table-Top High Repetition Rate X-Ray Lasers, Optical-Field Ionised (OFI) X-Ray Lasers, Theory and Simulation of X-Ray Lasers, High Order Harmonic Generation, XUV Optics and X-Ray Laser Applications, Capillary Discharge X-Ray Lasers, Alternative Sources of coherent XUV Radiation. The proceedings of this conference constitute a comprehensive source of reference for scientists involved in researching the development and application of coherent X-Ray sources.
