Diagnostic of laser contrast using target reflectivity

Pirozhkov, A. S.; Choi, I. W.; Sung, J. H.; Lee, S. K.; Yu, T. J.; Jeong, T. M.; Kim, I J.; Hafz, N.; Kim, C. M.; Pae, K. H.; Noh, Y.-C.; Ko, D.-K.; Lee, J.; Robinson, A. P. L.; Foster, P.; Hawkes, S.; Streeter, M.; Spindloe, C.; McKenna, P.; Carroll, D. C.
June 2009
Applied Physics Letters;6/15/2009, Vol. 94 Issue 24, p241102
Academic Journal
Using three different laser systems, we demonstrate a convenient and simple plasma based diagnostic of the contrast of high-power short-pulse lasers. The technique is based on measuring the specular reflectivity from a solid target. The reflectivity remains high even at relativistic intensities above 1019 W/cm2 in the case of a high-contrast prepulse-free laser. On the contrary, the specular reflectivity drops with increasing intensities in the case of systems with insufficient contrast due to beam breakup and increased absorption caused by preplasma.


Related Articles

  • Many variant lasers compete in the blue. Marshall, Larry // Laser Focus World;Oct2004, Vol. 40 Issue 10, p79 

    Examines the market for low-power blue-emitting lasers in the United States. Directly doubled diodes; Upconversion fiber lasers; Diode-pumped solid-state lasers.

  • Big Light: Optical Coherence Over Very Large Areas in Photonic-Crystal Distributed-Feedback Lasers. Bewley, W. W.; Lindle, J. R.; Kim, C. S.; Vurgaftman, I.; Canedy, C. L.; Kim, M.; Meyer, J. R. // AIP Conference Proceedings;2005, Vol. 772 Issue 1, p1525 

    Recent progress in the development of edge-emitting and surface-emitting photonic-crystal distributed-feedback lasers is reviewed. For an edge-emitting device with a mid-IR “w” active region, the beam quality is no worse than 8 times the diffraction limit for stripes as wide as 600...

  • Solid-state lasers: status and perspectives. Huber, G.; Limpert, J.; Tünnermann, A. // Applied Physics B: Lasers & Optics;Oct2009, Vol. 97 Issue 2, p249 

    The authors reflect upon the present status of diode-pumped solid-state lasers in various technological and scientific purposes. They state that solid-state lasers are being used as a source of coherent radiation for continuous wave and pulse operations and mention that the next generation of...

  • Cavity-enhanced graphene. Gerstner, Ed // Nature Physics;Aug2012, Vol. 8 Issue 8, p580 

    The article focuses on a research which found that graphene has extraordinary electrical properties that could be used for the development of highspeed optoelectronic devices like photodetectors, optical modulators and solid-state lasers.

  • Loss reduction in fully contacted organic laser waveguides using TE2 modes. Görrn, P.; Rabe, T.; Riedl, T.; Kowalsky, W. // Applied Physics Letters;7/23/2007, Vol. 91 Issue 4, p041113 

    A strategy to contact organic lasers is proposed. Without the need for thick transport layers that keep the optical mode away from the contacts waveguide losses similar to those of structures without contacts can be achieved. The key to this concept is to position the contacts in the intensity...

  • Electricity drives Raman laser.  // Laser Focus World;Apr2005, Vol. 41 Issue 4, p9 

    Reports on the first Raman laser that is electrically-driven and requires no external optical pump. Combination of nonlinear optical devices and semiconductor injection lasers; Difference from conventional solid-state Raman lasers that rely on photon energy from an external optical pump.

  • Distributed multimode architectures deliver low-cost power and reliability. Strite, Toby; Pflueger, Silke; Rossin, Victor; Zucker, Erik; Tai, Kuochou; Wolak, Ed // Laser Focus World;Jun2004, Vol. 40 Issue 6, p149 

    Reports on the emergence of diode-pumped laser architectures as alternatives to traditional flashlamp-pumped Nd:YAG lasers. Advantages of diode-pumped lasers over flashlamp-pumped Nd:YAG lasers; Low-cost power and reliability of distributed multimode architectures; Acceleration levels attainable...

  • MANUFACTURERS' PRODUCT SHOWCASE.  // Laser Focus World;Jun2004, Vol. 40 Issue 6, p188 

    Highlights products in the laser industry available as of June 2004. IMPEX High Tech's CW Green DPSS Microchip Laser; Optikos Corp.'s Lens Measurement Services; Crystal lasers from CrystalLaser.

  • Gaining momentum. Hoult, Anthony // Industrial Laser Solutions;Jan2006, Vol. 21 Issue 1, p19 

    The article provides information on the application of fiber lasers in stent cutting and solder mask stencil cutting. Stenting involves the insertion of laser cut into a fine wall wire mesh-like structure. Fiber lasers have an edge in such process because it produce low-taper, high aspect ratio...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics