Product's Technical Parameter: Stable and adjustable output power Over-temperature and over-current protection External modulation available Suitable for scientific research, medical therapeutics, biotechnology, laser show, etc Specifications: Wavelength: 1064nm Output power: 2000mw Working Mode: CW Beam Mode: TEM00, Multi-longitude Spectral Linewidth: <0.1nm Polarization: Line Polarization Ratio: 100: 1 Beam Quality(M2 Factor)<1.2 Beam Divergency(full angel, Mrad): 1.2± 0.2 Beam Diameter at aperture (mm): 1.0-3.0 Beam roundness: >90% Power stability(RMS)<3%@8hours Aperture Position (mm): 30 Dimension of the laser head: 180x62x62.5mm External Modulation: 5V TTL/5V analog Modulating Repetition: 30K TTL/10K analog Cooling system: TEC Warm-up time(minutes): 15 Operation Temperature(C): 18-30 Expected lifetime(hours) 10000 Warranty time: 1 year