ABSTRACT
The effects on far-field intensity patterns, Strehl ratios, central-lobe angular widths, and central-lobe pointing in rectangular aperture, rectangular grid, coherent emitter arrays with uncorrelated and nearest-neighbor-correlated Gaussian phase deviations are presented.
ABSTRACT
A transversely extended, flat-flat monolithic Nd:YAG laser cavity was pumped by a two-dimensional laser-diode array to form an array of cw microchip laser emitters with total output power of 9.8 W for an incident pump power of 38.5 W. The ensemble optical efficiency was 25.5%, the slope efficiency was 32.5%, and the beams were shown to have excellent spatial mode quality and parallelism.
ABSTRACT
We have demonstrated a monolithic MgO:LiNbO(3) doubly resonant optical parametric oscillator (OPO) using an allsolid- state pump. The pump laser was a single-axial-mode monolithic Nd:YAG nonplanar ring oscillator whose diode-laser pump was modulated at 325 kHz to produce relaxation oscillation spikes to higher peak powers at 1.06 microm that were frequency doubled in a resonant cavity to 532 nm. Pump depletions for the OPO of greater than 60% were observed when pumping six times above the calculated 40-mW threshold. The OPO output was temperature tuned from 1.01 to 1.13 microm, producing single-axial-mode output over much of the range. By changing the voltage applied across the OPO, the output wavelength was scanned as much as 11 nm in 310 V.
ABSTRACT
A monolithic doubly resonant optical parametric oscillator (OPO) fabricated from MgO:LiNbO(3) was pumped by a cw, frequency-doubled, diode-laser-pumped Nd:YAG laser. The threshold for cw operation was 12 mW, and pump depletions of up to 78% were observed two times above threshold. The total OPO output power was 8.15 mW, with a conversion efficiency for the incident pump of 34% and combined conversion efficiency for the 1064-nm laser light of 14%. The OPO was temperature tuned from 1007 to 1129 nm, operated on a single-axial-mode pair over most of the range, and could be electric field tuned by as much as 38 nm near degeneracy.
ABSTRACT
A lamp-pumped, 13-W cw Nd:YAG ring laser at 1.064 microm is injection locked using a 40-mW single-frequency diodelaser-pumped Nd:YAG laser as the master oscillator. The phase fidelity of the injected slave to the master is measured using an all-optical technique.
ABSTRACT
We report 13% second-harmonic conversion efficiency of a 15-mW, cw, diode-laser-pumped Nd:YAG oscillator. 2 mW of single-axial-mode 532-mm radiation was generated by externally resonant second-harmonic generation in a monolithic MgO:LiNbO(3) nonlinear crystal cavity. The measured finesse of 450 for the monolithic external cavity indicated that absorption and scatter losses in the doubler were less than 0.8%.
