Pumping Configuration for Small-Sized Diode-Pumped Nd:YAG Laser

diode-pumped lasers using a miniature NdYAG slab without focusing lenses is proposed. Using total reflection on the slab surfaces, the pump light is confmed to the laser mode volume. In the fundamental oscillation, a TEMoo output power of 210 mW is obtained with a laser diode power of 890 mW. Furthermore, we realized a small-sized (10 mm Φ x 17.5 mm) diode-pumped green laser using this configuration. An output power of 4.4 mW is obtained with a laser diode power of 440 mW.