Laser Speckle Reducers

Optotune's LSR series of transmissive laser speckle reducers allows significant speckle reduction in laser systems. Local interferences are removed by dynamically diffusing the coherent beam.

Optotune's laser speckle reducers are essentially moving diffusers with a unique method of actuation. Two innovative technologies are offered, each with its own advantages.

Electro-active polymer LSR

Optotune was the first to commercialize electro-active polymers (EAPs) in the field of optics. The basis of this approach is a thin, elastic membrane that carries a lightweight diffuser in its center and four electrodes surrounding it. Actuated at a 90° phase shift, the electrodes induce a circular oscillation of the diffuser in x- and y-direction. The ultra-compact form factor, minimal weight and the absence of noise and vibrations make this technology particularly attractive for hand-held devices.

Reluctance force LSR

Launched in 2016, the reluctance force LSR is particularly suitable for applications that require large format glass diffusers. The basis of this approach is a single thin steel structure that is brought into resonance by pulsing an actuating coil with current, which generates a strong reluctance force. Thanks to a high q-factor large amplitudes in the range of 800um are achieved at low power consumption even for heavy glass diffusers.

Optotune's laser speckle reducer is the ideal choice for application in laser projection displays, beam homogenizers, metrology, microscopy, interferometry and lithography.

Optotune's laser speckle reducers can be tailored to your specific demands in terms of size, oscillation frequency or transmission range - contact Pacer for details.

Optotune's laser speckle reducers can be tailored to your specific demands in terms of size, oscillation frequency or transmission range - contact Pacer for details.

LSR-3000 Series

Speckle noise from a laser-based system is reduced by dynamically diffusing the laser beam. A diffuser is bonded to a thin elastic membrane, which includes four independent electro-active polymer electrodes that induce a circular oscillation of the diffuser in x- and y-direction. The LSR-3000 Series integrates fully certified drive electronics powered through a single micro-USB connector. Two sizes are available: the LSR-3005 and the LSR- 3010 exhibiting a clear aperture of 5 mm and 10 mm, respectively.

LSR-OEM Series

Speckle noise from a laser-based system is reduced by dynamically diffusing the laser beam. A diffuser is bonded to a thin elastic membrane, which includes four independent electro-active polymer electrodes that induce a circular oscillation of the diffuser in x- and y-direction. The OEM Series provides a minimal housing for easy integration and can be supplied with or without control electronics. Two sizes are available: the LSR-5-17 and the LSR-10-22 exhibiting a clear aperture of 5 mm and 10 mm, respectively.