Ultrafast measurement of two-photon absorption by loss modulation
Publication
, Journal Article
Tian, P; Warren, WS
Published in: Optics Letters
September 15, 2002
We demonstrate a direct and sensitive technique for measuring two-photon absorption (TPA). An intensity-modulated femtosecond laser beam passes through a sample exhibiting TPA. A TPA signal at twice the modulation frequency is then generated and subsequently measured by a lock-in amplifier. The absolute TPA cross section of Rhodamine 6G at 800 nm is found to be (15.3 ± 2.0) × 10-50 cm4 s/photon and agrees well with previously published results obtained with much higher intensity [J. Chem. Phys. 112, 9201 (2000)]. Our method may be especially useful in measuring nonlinear absorptions of nonfluorescent materials. © 2002 Optical Society of America.
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Published In
Optics Letters
DOI
ISSN
0146-9592
Publication Date
September 15, 2002
Volume
27
Issue
18
Start / End Page
1634 / 1636
Related Subject Headings
- Optics
- 5102 Atomic, molecular and optical physics
- 4009 Electronics, sensors and digital hardware
- 4006 Communications engineering
- 0906 Electrical and Electronic Engineering
- 0206 Quantum Physics
- 0205 Optical Physics
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Tian, P., & Warren, W. S. (2002). Ultrafast measurement of two-photon absorption by loss modulation. Optics Letters, 27(18), 1634–1636. https://doi.org/10.1364/OL.27.001634
Tian, P., and W. S. Warren. “Ultrafast measurement of two-photon absorption by loss modulation.” Optics Letters 27, no. 18 (September 15, 2002): 1634–36. https://doi.org/10.1364/OL.27.001634.
Tian P, Warren WS. Ultrafast measurement of two-photon absorption by loss modulation. Optics Letters. 2002 Sep 15;27(18):1634–6.
Tian, P., and W. S. Warren. “Ultrafast measurement of two-photon absorption by loss modulation.” Optics Letters, vol. 27, no. 18, Sept. 2002, pp. 1634–36. Scopus, doi:10.1364/OL.27.001634.
Tian P, Warren WS. Ultrafast measurement of two-photon absorption by loss modulation. Optics Letters. 2002 Sep 15;27(18):1634–1636.
Published In
Optics Letters
DOI
ISSN
0146-9592
Publication Date
September 15, 2002
Volume
27
Issue
18
Start / End Page
1634 / 1636
Related Subject Headings
- Optics
- 5102 Atomic, molecular and optical physics
- 4009 Electronics, sensors and digital hardware
- 4006 Communications engineering
- 0906 Electrical and Electronic Engineering
- 0206 Quantum Physics
- 0205 Optical Physics