Abstract

We present experimental results obtained with a Pockels cell or passively Q-switched transvcrsc-diode-pumped Nd : YAG laser The pumping head is made of 36 QCW diode bars from Mc Donnell Douglas Corp. (4500 scries), which are closely coupled onto the Y AG rod (Crismatec). The active length and diameter of the cylindrical rod equal 10 and 6 mm. respectively. The total diodes energy is 800 mJ. when the pumping duration T_p and drive current I_p equal 400 µs and 65 A. We don't use any temperature control and the frequency is kept below a few Hertz. The diodes emission wavelength is then above 805 nm, leading to a coupling efficiency. η_c, near 70 %.

© 1996 IEEE