Frequency stability for long path difference interferometry, metrology, holography, spectroscopy and frequency marking. The short-term frequency stability of the laser makes it an excellent choice for interferometers with unequal arms. With the coherence length on the order of 100 m, the helium neon (HeNe) laser is ideal for large depth-of-field applications in holography and metrology. Frequency stability further enhances coherence length for critical measurements or exposures. The N-STP lasers are unique in that they use induction heating to control the length of a specially designed mirror mount structure, instead of heating over the entire cavity length. In this way, the overall package can be more compact, and the servo response to correct the cavity length can happen at a higher rate.

ULM Series cylindrical laser mounts attach to 340-RC and 370-RC rod clamps and provide a convenient way to attach these HeNe lasers to Newport stages, tables, or breadboards. For N-STP series, please mount the laser at either end of the body indicated by shading.