Third harmonic generation image of a spiral algae formation. The image is rendered using a series of cross sectional images produced by third harmonic generation at interfaces within the specimen. The excitation wavelength was 1.2 microns, and the detected wavelength was 400 nm. the laser pulse duration was 100 fs. Each cross sectional image was acquired in 1.6 seconds. The specimen in the image measures approximately 100 microns long by 50 microns wide.
Reported by: Jeff Squier at the CLEO/QELS '99 meeting.