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.
Intensity stability for surface texture characterization, velocimetry, scattering and polarization. The simple, one-button intensity lock ensures highly stable (less than 0.1% over short intervals) output power, ideal for applications where optical signal strength varies with changes in the test subject. Examples include surface scattering, profilometry, and single axis velocimetry. After the normal warm-up period, the output power of the laser can be adjusted to the desired level via a potentiometer adjustment.
Utilizing enhanced designs and superior optical components, the laser delivers unsurpassed operational stability and lifetimes. The mirror quality and performances are optimized to result in the highest quality HeNe lasers available in the market. This high-performance laser is supported by a one-year warranty.
HeNe Lasers use a mixture of Helium and Neon gas as the gain medium excited by an electrical discharge. Helium Neon gas lasers are based on a mature and well understood technology that offers a cost effective laser source with fundamental Gaussian beam quality, and ease of use. HeNe lasers offer a stable optical output over lifetimes greater than 20,000 hours and are insensitive to optical feedback.
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.
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