Australian Lidar Measurements of Aerosol Layers Associated with the 2015 Calbuco Eruption

Summary The Calbuco volcano eruption in southern Chile (April 22–23, 2015) injected volcanic aerosols into the atmosphere, forming distinct stratospheric aerosol layers observed over South Australia and Tasmania. Using lidar measurements, atmospheric trajectory modeling, and satellite data (CALIOP & OMPS), researchers confirmed that these layers originated from Calbuco. Key findings include: Stratospheric aerosol layers detected […]

Twisted Nematic Liquid Crystal Devices

Summary Meadowlark Optics has been a leader in nematic liquid crystal (LC) devices for over 25 years, pioneering liquid crystal variable retarders (LCVRs) for precision optical applications. LCVRs offer low-voltage electrical control of retardance (typically ≤20V) and have largely replaced high-voltage Pockels cells in many applications. However, Twisted Nematic (TN) Liquid Crystal Devices provide distinct […]

Liquid Crystal in Precision Optical Devices

Summary While liquid crystal technology is widely known for display applications, its role in scientific and engineering fields is rapidly expanding. Liquid crystal devices (LCDs) are now critical for beam steering, wavefront modulation, and polarization switching in precision optical systems. Unlike traditional flat-panel displays, high-performance liquid crystal optics require specialized construction techniques to achieve superior […]