R. Knappe

A 180 mW Nd:LaSc3(BO3)4 single-frequency TEM00 microchip laser pumped by an injection-locked diode-laser array

A TEM00 single-frequency, diode-pumped microchip laser of Nd(25%):LaSc3(BO3)4 is operated with an output power of 180 mW. For best performance the laser was pumped by the 450 mW diffraction-limited single-frequency radiation of an injection-locked AlGaAs diode-laser array and cooled to the temperature of liquid nitrogen. The active and passive losses of the microchip laser were investigated by measuring the relaxation oscillation frequency and by comparing the experimental results with values obtained from appropriate rate equations. The power-dependent far-field pattern is in good agreement with the intensity distribution calculated by assuming a thermally induced waveguide cavity.

Single-frequency tunable nanosecond optical parametric generator with 10 kHz repetition rate

Summary form only given. We report on a nanosecond optical parametric generator (OPG) of periodically poled lithium niobate (LiNbO/sub 3/) (PPLN). The average output power (signal and idler wave) of the OPG is 2.9 W at 10 kHz repetition rate. The linewidth of the OPG radiation was reduced to 300 MHz by injection seeding with the radiation of a DFB diode laser.

Application of injection-locked high power diode laser arrays as pump source for efficient green or blue Nd:YAB lasers and cw KTP optical parametric oscillators

A detailed characterization of this KTiOPO/sub 4/ optical parametric oscillator (OPO) system and its spectral properties will be presented, including investigations which use the radiation of an injection-locked 1W, 764nm diode laser array as pump source.<<ETX>>

High power, high repetition-rate picosecond Nd:YVO/sub 4/ regenerative amplifier

In this paper we report on a high power, high repetition-rate picosecond regenerative amplifier using Nd:YVO/sub 4/ as the laser-active material. With recently developed electrooptic modulators (EOM) of BBO, the system generates average powers exceeding the 10 watt level at repetition-rates of up to 20 kHz.

High average power 80 MHz repetition rate additive pulse mode-locked femtosecond Yb:YAG laser

Summary form only given. In this paper we report on an additive-pulse-mode-locked Yb:YAG laser which generates high average power fs-laser pulses with a repetition rate of 80 MHz. For pumping we use a fiber coupled diode laser which emits 20 W of 940 nm light out of a fiber with 200 /spl mu/m core diameter. The pump light is focused into a Yb:YAG rod to a spot size of 200 /spl mu/m. To improve the homogeneity of the pump light distribution inside the laser crystal, the transmitted pump-light is reflected back into the crystal.

Broadly tunable femtosecond diode-pumped Cr:LiSAF laser

We describe a diode-pumped Cr:LiSrAlF/sub 6/ laser with a femtosecond output continuously tunable between 809 and 910 nm. A power of 110 mW was produced at 870 nm with a pulse duration of 80 fs. This is a significantly wider tuning range than normally obtained with diode-pumped tunable lasers.