The HHL housing is a sealed collimated housing for CW or pulsed lasers.It is ideal for short-run integration and use in difficult environments. The HHL housing is much smaller than the LLH and is completely sealed. The HHL contains a Peltier junction and a NTC temperature sensor (model 10K4CG), which can be controlled by the TC3 or your own temperature control system. Heat dissipation is performed by thermal contact with its copper base; the heat dissipation capacity depends on the operation mode and environmental conditions.

There are three versions of the beam output:

• In the standard version, the IR beam is collimated through a chalcogenide glass lens and goes through an AR-coated ZnSe window. The free-space beam has a divergence < 6 mrad.

• In the uncollimated version, the lens is absent and the laser source is placed as close as possible from the ZnSe window for a divergent output

• In the pigtailed version a fiber port is added to the HHL and is provided with a ~1-m length of singlemode mid-IR optical fiber. 

Key Features

• Heat Dissipation up to 16W

• Cooling up to 60°C

• Collimated output

• Fiber Pigtail connector available 

Key Applications

• Integration into industrial systems 

The HHL can be equipped with either a single-stage, double-stage or high power TEC cooler. Their performance are shown here and compared to the much larger LLH for reference. The single-stage and double-stage are equivalent in price and the ideal one will be chosen to fit the laser expected usage; the high power TEC is more expensive.