Resources Contact Us Home
Compact Mid-IR laser

Image Number 10 for United States Patent #7873094.

A compact mid-IR laser device utilizes a quantum cascade laser to provide mid-IR frequencies suitable for use in molecular detection by signature absorption spectra. The compact nature of the device is obtained owing to an efficient heat transfer structure, the use of a small diameter aspheric lens and a monolithic assembly structure to hold the optical elements in a fixed position relative to one another. The compact housing size may be approximately 20 cm.times.20 cm.times.20 cm or less. Efficient heat transfer is achieved using a thermoelectric cooler TEC combined with a high thermal conductivity heat spreader onto which the quantum cascade laser is thermally coupled. The heat spreader not only serves to dissipate heat and conduct same to the TEC, but also serves as an optical platform to secure the optical elements within the housing in a fixed relationship relative on one another. A small diameter aspheric lens may have a diameter of 10 mm or less and is positioned to provided a collimated beam output from the quantum cascade laser. The housing is hermetically sealed to provide a rugged, light weight portable MIR laser source.

  Recently Added Patents
Composite filtration membranes and methods of preparation thereof
Signal processor and signal processing method
Audio signal clip detection
Methods and apparatus to determine impressions using distributed demographic information
Secure soft SIM credential transfer
Systems, methods, and apparatus to prepare a mobile device for provisioning
Handover signaling in wireless networks
  Randomly Featured Patents
Process for the manufacture of urea-formaldehyde/polyurethane polymers
X-Ray imaging diagnostic apparatus with low X-ray radiation
Protective covering against moisture for a powder inhaler
Single and multi-point door lock
Top vacuum corrugation feeder
Nanocrystal memory with differential energy bands and method of formation
Bicycle display rack
Motor and pump shaft connecting assembly with shaft locating jack ring
Floating source line architecture for non-volatile memory
Digital right management system, content server, and mobile terminal