integratedoptics.com VS.

oxxius.com

This 830 nm laser features a tunable single-longitudinal-mode (SLM) and operates in multiple transversal modes. It used mainly in industrial applications of Raman spectroscopy, where a high-power single-frequency operation is needed without the necessity of sharp focusing. The transversal modes are distributed in one row, thus the fast axis can be focussed with M2 ~1.3, while the slow axis has multiple modes and its focusability is poor - theoretically, it can be focussed to a width of ~50 µm. This laser is a Volume Bragg Grating (VBG) stabilized diode laser, which is distinguished by high electrical efficiency and exceptional wavelength stability. Note:In optical systems with strong back-reflections (e.g. more than 10%), the laser must be protected by using an optical isolator with at least 20 dB isolation. Typical applications include interferometry, confocal microscopy (especially working with reflective samples), etc. Failure to comply with these requirements will render the warranty void for cases of COD (Catastrophic Optical Damage) of laser diode facets.