CleanLine™ ASE Filter and Laser Systems

Ondax CleanLine™ Series ASE Filter Systems are a family of tightly integrated, pre-aligned, multi-element ASE Filter Modules designed to provide the enhanced narrow band, low noise, ASE-free laser performance required for ultra-low-frequency (low wavenumber) Raman spectroscopy, and other demanding spectroscopy or metrology applications. Incorporating our NoiseBlock™ ASE Suppression Filters and configured for fast, easy alignment and use with our SureBlock™ XLF Series Raman Filter Systems, the CleanLine™ family is based on our proprietary solid-state, ultra-narrow band Volume Holographic Filter technology, delivering unlimited lifetime, exceptional throughput, and ultra-stable environmental performance.

The CleanLine™ FS free-space filter system is an ultra-compact (3” or 75mm) filter system with integrated alignment irises and a built-in wavelength fine-tuning adjustment. The CleanLine™ LM-FS incorporates a SureLock™ LM Series wavelength-stabilized laser module along with a CleanLine™ FS. And the CleanLine™ LM-FC includes an optical isolator and various fiber-coupling options – making the CleanLine™ easily configurable for turn-key integrationinto your experiment, instrumentation, or Raman spectroscopy system.

Available for standard wavelengths of 785nm, 532nm, and 405nm. Custom wavelengths are available upon request.

CleanLine™ ASE Filter and Laser Systems

CleanLine™ Series ASE Filter and Laser Systems

CleanLineTM LM-FC with integrated ASE filters, optical isolator and fiber-coupled output

CleanLineTM LM-FS

CleanLineTM LM-FS with prealigned ASE filters and free space output


  • Exceptional ASE Suppression
  • better than -80db below laser line
  • Stable, ultra-narrowband performance
  • 0.1nm bandwidth, Δλ =10pm/°C


  • Ultra-low frequency Raman spectroscopy
  • High resulotion metrology /spectroscopy
CleanLine™ FS Specifications
Specification 405nm 532nm1 785nm Unit
ASE Suppression (below laser line), typical -80 -80 -80 db
Throughput1 (free space version), min/typical 55/60 65/70 70/75 % of incoming power
Temperature Stability 10 10 10 pm/°C

1CleanLine FS (free space) only. Throughput specifications do not include isolator or fiber coupled versions. Call for specifications on specific wavelengths or configurations.

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