NIF injection laser system

Peter J. Wisoff; Mark Whitman Bowers; Gaylen V. Erbert; Donald F. Browning; Donald R. Jedlovec

doi:10.1117/12.538466

28 May 2004 NIF injection laser system

Peter J. Wisoff, Mark Whitman Bowers, Gaylen V. Erbert, Donald F. Browning, Donald R. Jedlovec

Proceedings Volume 5341, Optical Engineering at the Lawrence Livermore National Laboratory II: The National Ignition Facility; (2004) https://doi.org/10.1117/12.538466
Event: Lasers and Applications in Science and Engineering, 2004, San Jose, Ca, United States

Abstract

The National Ignition Facility (NIF) is a high-power, 192-beam laser facility being built at the Lawrence Livermore National Laboratory. The 192 laser beams that will converge on the target at the output of the NIF laser system originate from a low power fiber laser in the Master Oscillator Room (MOR). The MOR is responsible for generating the single pulse that seeds the entire NIF laser system. This single pulse is phase-modulated to add bandwidth, and then amplified and split into 48 separate beam lines all in single-mode polarizing fiber. Before leaving the MOR, each of the 48 output pulses are temporally sculpted into high contrast shapes using Arbitrary Waveform Generators (AWG). Each output pulse is then carried by optical fiber to the Preamplifier Module (PAM) where it is amplified to the multi-joule level using a diode-pumped regenerative amplifier and a multi-pass, flashlamp-pumped rod amplifier. Inside the PAM, the beam is spatially shaped to pre-compensate for the spatial gain profile in the main laser amplifiers. The output from the PAM is sampled by a diagnostic package called the Input Sensor Package (ISP) and then split into four beams in the Preamplifier Beam Transport System (PABTS). Each of these four beams is injected into one of NIF's 192 beam lines. The combination of the MOR, PAM, ISP and PABTS constitute the Injection Laser System (ILS) for NIF. This system has proven its flexibility of providing a wide variety of pulse shapes and energies during the first experiments utilizing four beam lines of NIF.

Citation Download Citation

Peter J. Wisoff, Mark Whitman Bowers, Gaylen V. Erbert, Donald F. Browning, and Donald R. Jedlovec "NIF injection laser system", Proc. SPIE 5341, Optical Engineering at the Lawrence Livermore National Laboratory II: The National Ignition Facility, (28 May 2004); https://doi.org/10.1117/12.538466

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available