Laser Power Controller (LPC)

The Laser Power Controller (LPC) offers automated regulation and long term beam power stability better than .025% rms.

It uses a high-speed liquid crystal element together with a thermally-controlled monitor photodiode to regulate the beam intensity at a user-selected level.  The LPC operates by modulating the laser beam, with no connections to the laser itself.

• Easy to align with its compact size and large aperture
• Its liquid crystal modulator allows use with IR lasers, and offers high power handling
• A modulation input permits analog selection of the desired output power, while a reference output provides a signal proportional to the monitor photodiode reading

The LPC works with virtually any CW or mode-locked laser. The LPC can be controlled via front panel controls, a USB interface, or an analog input jack. A single system can attenuate, stabilize and display laser power. Options are available to accept external feedback from your own photodiode or any device of your choosing.

Applications

• Achieve precise powers for single molecule experiments
• Adjustment of laser power without changing lamp currents
• Remove baseline noise and 1/f noise from spectra
• Control beam power with Ti:Sapphire lasers
• Metrology
• Microscopy