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Title: New Concepts for Reducing Costs and Increasing Efficiency of Solid-State Laser Drivers for IFE

Abstract

No abstract prepared.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
902368
Report Number(s):
UCRL-CONF-228125
TRN: US200717%%279
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: Presented at: Innovative Confinement Concepts (ICC) Workshop, College Parki, MD, United States, Feb 12 - Feb 14, 2007
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; CONFINEMENT; EFFICIENCY; SOLID STATE LASERS

Citation Formats

Erlandson, A, Ault, E, Barty, C, Bayramian, A, Beach, R, Caird, J, Campbell, R, Cross, R, Ladran, T, Liao, Z, Murray, J R, Page, R, Schaffers, K, Soules, T, Sutton, S, and Telford, S. New Concepts for Reducing Costs and Increasing Efficiency of Solid-State Laser Drivers for IFE. United States: N. p., 2007. Web.
Erlandson, A, Ault, E, Barty, C, Bayramian, A, Beach, R, Caird, J, Campbell, R, Cross, R, Ladran, T, Liao, Z, Murray, J R, Page, R, Schaffers, K, Soules, T, Sutton, S, & Telford, S. New Concepts for Reducing Costs and Increasing Efficiency of Solid-State Laser Drivers for IFE. United States.
Erlandson, A, Ault, E, Barty, C, Bayramian, A, Beach, R, Caird, J, Campbell, R, Cross, R, Ladran, T, Liao, Z, Murray, J R, Page, R, Schaffers, K, Soules, T, Sutton, S, and Telford, S. Fri . "New Concepts for Reducing Costs and Increasing Efficiency of Solid-State Laser Drivers for IFE". United States. doi:. https://www.osti.gov/servlets/purl/902368.
@article{osti_902368,
title = {New Concepts for Reducing Costs and Increasing Efficiency of Solid-State Laser Drivers for IFE},
author = {Erlandson, A and Ault, E and Barty, C and Bayramian, A and Beach, R and Caird, J and Campbell, R and Cross, R and Ladran, T and Liao, Z and Murray, J R and Page, R and Schaffers, K and Soules, T and Sutton, S and Telford, S},
abstractNote = {No abstract prepared.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Feb 09 00:00:00 EST 2007},
month = {Fri Feb 09 00:00:00 EST 2007}
}

Conference:
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  • Based on five technical advances at LLNL and a new systems-analysis code that we have written, we present conceptual designs for diode-pumped solid-state laser (DPSSL) drivers for Inertial Fusion Energy (IFE) power plants. Such designs are based on detailed physics calculations for the driver, and on generic scaling relationships for the reactor and balance of plant (BOP). We describe the performance and economics of such power plants, show how sensitive these results are to changes in the major parameters, and indicate how technological improvements can make DPSSL-driven IFE plants more competitive. [copyright] 1994[ital American] [ital Institute] [ital of] [ital Physics]
  • This paper reviews work on flashlamp-pumped solid state lasers and discusses diode-pumped solid state lasers, the Mercury laser in particular. It also discusses ICF lasers beyond Mercury.
  • Based on five technical advances at LLNL and a new systems-analysis code that we have written, we present conceptual designs for diode-pumped solid-state laser (DPSSL) drivers for Inertial Fusion Energy (IFE) power plants. Such designs are based on detailed physics calculations for the drive, and on generic scaling relationships for the reactor and balance of plant (BOP). We describe the performance and economics of such power plants, show how sensitive these results are to changes in the major parameters, and indicate how technological improvements can make DPSSL-driven IFE plants more competitive.
  • We introduce new concepts for increasing the efficiency of solid state lasers by using gratings deposited on laser slabs or disks. The gratings improve efficiency in two ways: (1) by coupling out of the slab deleterious amplified spontaneous emission (ASE) and (2) by increasing the absorption efficiency of pump light. The gratings also serve as antireflective coatings for the extracting laser beam. To evaluate the potential for such coatings to improve laser performance, we calculated optical properties of a 2500 groove/mm, tantala-silica grating on a 1cm x 4cm x 8cm titanium-doped sapphire slab and performed ray-trace calculations for ASE andmore » pump light. Our calculations show substantial improvements in efficiency due to grating ASE-coupling properties. For example, the gratings reduce pump energy required to produce a 0.6/cm gain coefficient by 9%, 20% and 35% for pump pulse durations of 0.5 {micro}s, 1{micro}s and 3{micro}s, respectively. Gratings also increase 532-nm pump-light absorption efficiency, particularly when the product slab overall absorption is small. For example, when the single-pass absorption is 1 neper, absorption efficiency increases from 66%, without gratings, to 86%, when gratings are used.« less
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