Fringe-free, Background-free, Collinear Third Harmonic Generation FROG Measurements for Multiphoton Microscopy

Journal Article · Fri Jul 21 00:00:00 EDT 2006 · Optics Letters, vol. 31, no. 22, November 15, 2006, pp. 3366-3368

OSTI ID:900068

Chadwick, R; Spahr, E; Squier, J A; Durfee, C G; Walker, B C; Fittinghoff, D N

Collinear pulse measurement tools useful at the full numerical aperture (NA) of multiphoton microscope objectives are a necessity for a quantitative characterization of the femtosecond pulses focused by these systems. In this letter, we demonstrate a simple new technique, for characterizing the pulse at the focus in a multiphoton microscope. This technique, a background-free, fringe-free, form of frequency-resolved optical gating, uses the third harmonic signal generated from a glass coverslip. Here it is used to characterize 100 fs pulses (typical values for a multiphoton microscope) at the focus of a 0.65 NA objective.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 900068
• Report Number(s): UCRL-JRNL-223054; TRN: US200709%%363
• Journal Information: Optics Letters, vol. 31, no. 22, November 15, 2006, pp. 3366-3368, Journal Name: Optics Letters, vol. 31, no. 22, November 15, 2006, pp. 3366-3368
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
APERTURES
GLASS
HARMONIC GENERATION
HARMONICS
MICROSCOPES
MICROSCOPY