Alphalas GmbH is offering its Monolas-532-100-SM single-frequency, low-noise green lasers. The diode-pumped, frequency-doubled, continuous-wave instruments deliver coherent radiation at 532 nm at a noise level of less than 0.2%. Coherence length is more than 300 m, output power can be adjusted from 10 to 100 mW, and the TEM₀₀ beam has an M² of <1.1. Two versions are available. The stand-alone model operates autonomously and has an integrated heat sink. The compact “cool through base plate” type allows the customer to design the heat dissipation. Applications include laser interference measurements, Raman spectroscopy, holography, nonlinear optics and laser microscopy.