Abstract
Real-time vibrational microscopy has been recently demonstrated by various techniques, most of them utilizing the well-known schemes of coherent anti-stokes Raman scattering and stimulated Raman scattering. These techniques readily provide valuable chemical information mostly in the higher vibrational frequency regime (>400 cm−1). Addressing the low vibrational frequency regime (<200 cm−1) is challenging due to the usage of spectral filters that are required to isolate the signal from the Rayleigh scattered excitation field. In this Letter, we report on rapid, high-resolution, low-frequency (<130 cm−1) vibrational microscopy using impulsive coherent Raman excitation. By combining impulsive excitation with a fast acousto-optic delay line, we detect the Raman-induced optical Kerr lensing and spectral shift effects with a 25 μs pixel dwell time to produce shot-noise limited, low-frequency hyper-spectral images of various samples.
| Original language | English |
|---|---|
| Pages (from-to) | 5153-5156 |
| Number of pages | 4 |
| Journal | Optics Letters |
| Volume | 44 |
| Issue number | 21 |
| DOIs | |
| Publication status | Published - Nov 1 2019 |
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ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
Sub-second hyper-spectral low-frequency vibrational imaging via impulsive Raman excitation. / Raanan, Dekel; Audier, Xavier; Shivkumar, Siddarth; Asher, Maor; Menahem, Matan; Yaffe, Omer; Forget, Nicolas; Rigneault, Hervé; Oron, Dan.
In: Optics Letters, Vol. 44, No. 21, 01.11.2019, p. 5153-5156.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Sub-second hyper-spectral low-frequency vibrational imaging via impulsive Raman excitation
AU - Raanan, Dekel
AU - Audier, Xavier
AU - Shivkumar, Siddarth
AU - Asher, Maor
AU - Menahem, Matan
AU - Yaffe, Omer
AU - Forget, Nicolas
AU - Rigneault, Hervé
AU - Oron, Dan
PY - 2019/11/1
Y1 - 2019/11/1
N2 - Real-time vibrational microscopy has been recently demonstrated by various techniques, most of them utilizing the well-known schemes of coherent anti-stokes Raman scattering and stimulated Raman scattering. These techniques readily provide valuable chemical information mostly in the higher vibrational frequency regime (>400 cm−1). Addressing the low vibrational frequency regime (<200 cm−1) is challenging due to the usage of spectral filters that are required to isolate the signal from the Rayleigh scattered excitation field. In this Letter, we report on rapid, high-resolution, low-frequency (<130 cm−1) vibrational microscopy using impulsive coherent Raman excitation. By combining impulsive excitation with a fast acousto-optic delay line, we detect the Raman-induced optical Kerr lensing and spectral shift effects with a 25 μs pixel dwell time to produce shot-noise limited, low-frequency hyper-spectral images of various samples.
AB - Real-time vibrational microscopy has been recently demonstrated by various techniques, most of them utilizing the well-known schemes of coherent anti-stokes Raman scattering and stimulated Raman scattering. These techniques readily provide valuable chemical information mostly in the higher vibrational frequency regime (>400 cm−1). Addressing the low vibrational frequency regime (<200 cm−1) is challenging due to the usage of spectral filters that are required to isolate the signal from the Rayleigh scattered excitation field. In this Letter, we report on rapid, high-resolution, low-frequency (<130 cm−1) vibrational microscopy using impulsive coherent Raman excitation. By combining impulsive excitation with a fast acousto-optic delay line, we detect the Raman-induced optical Kerr lensing and spectral shift effects with a 25 μs pixel dwell time to produce shot-noise limited, low-frequency hyper-spectral images of various samples.
UR - http://www.scopus.com/inward/record.url?scp=85074347489&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85074347489&partnerID=8YFLogxK
U2 - 10.1364/OL.44.005153
DO - 10.1364/OL.44.005153
M3 - Article
C2 - 31674954
AN - SCOPUS:85074347489
VL - 44
SP - 5153
EP - 5156
JO - Optics Letters
JF - Optics Letters
SN - 0146-9592
IS - 21
ER -