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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1994),
  • paper CThC7

Diode laser pumped, diode laser seeded Nd:YLF regenerative amplifier

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Abstract

Design of a diode-pumped regenerative amplifier (RA) capable of efficiently producing millijoule pulses required a unique pumping configuration, as well as careful choice of gain medium. The 1047 nm line (E||c) of Nd:YLF was chosen due to its long upper state lifetime (≈525 ps), and relatively large stimulated emission cross-section (1.89 x 10“9 cm2). Micro-lens collimated diodes were employed in order to deliver the pump energy to a specific crosssectional area. The gain region was smaller than the lowest order transverse mode diameter in one axis enabling section of the lowest order transverse mode on that axis. On the other axis, the top and bottom of the Nd:YLF slab act as an aperture to ensure fundamental mode operation. The pump head is shown in Fig. 1.

© 1994 Optical Society of America

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