Laser Diode Collimators

Semiconductor lasers often require specialized lenses due to their unique characteristics. In general, laser diodes are small point sources with large numerical apertures. Laser Diode Objectives are designed to accommodate the large input angles associated with these compact laser sources. Standard designs offer diffraction limited performance for numerical apertures as high as 0.6, making them useful for fiber optic coupling or collimating. The spectral range of our Diode Collimators is extended into the infrared region allowing for operations with most diodes within the 670 nm to 1550 nm wavelength range. The lenses may also be combined to produce focusing or non-focusing configurations as desired. Though designed for use with Diode Lasers, these lenses may be used with other lasers requiring highly corrected lenses within the visible and near infrared spectral range.

Specifications:			Features
Wavefront Distortion	< 1/4 Wave		Diffraction Limited Design Corrected for 5 to 10 mil Window Long Back Working Distance
Transmission	> 97%
Usable Wavelength Range	670 to 1550 nm
Field of View	1.5 degrees

Available Laser Diode Lenses

Please replace λ in model number with working wavelength when ordering.

The five positive air-spaced doublets described below focus the collimated output of diode lasers operating within the 670 to 1550 nm spectral range.  They may also be combined to expand the 18 mm output of either the Model 54-18-15 or 54-18-23 Collimating Objectives.  The Model 54-18-76N negative doublets is designed to serve as the input element of a Galilean Beam Expander when mated with any of the 0.12N.A. positive lenses.  All six lenses are fully corrected aplanats, so they can be mixed and matched in a focusing or non-focusing configuration to obtain the desired magnification.  With the appropriate antireflection coating, each lens may also be used with visible wavelength lasers.

Please replace λ in model number with working wavelength when ordering.