Abstract
We present a new method for the measurement of the stimulated Raman spectrum based on time-dependent spatial modulation of a laser beam as it passes through a Raman active medium. This effect is similar to the instantaneous Kerr lensing and Kerr deflection yet involves resonant vibrations which result in a time-dependent refractive index change. We use sub-nanojoule pulses together with a sensitive pump-probe measurement apparatus to excite and detect the fine (10-5-10-4) temporal and spatial variations in intensity resulting from the Raman-induced Kerr effect. We demonstrate the effect by changing the spatial overlap between the pump and probe at the sample and measuring the time-dependent deformation of the probe beam's cross section. This method is particularly useful for detection of low-frequency Raman lines, as we demonstrate by measuring the Raman spectrum of neat liquids in a cuvette.
| Original language | English |
|---|---|
| Article number | 092501 |
| Journal | APL Photonics |
| Volume | 3 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Jan 1 2018 |
Fingerprint
ASJC Scopus subject areas
- Computer Networks and Communications
- Atomic and Molecular Physics, and Optics
Cite this
Vibrational spectroscopy via stimulated Raman induced Kerr lensing. / Raanan, Dekel; Lüttig, Julian; Silberberg, Yaron; Oron, Dan.
In: APL Photonics, Vol. 3, No. 9, 092501, 01.01.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Vibrational spectroscopy via stimulated Raman induced Kerr lensing
AU - Raanan, Dekel
AU - Lüttig, Julian
AU - Silberberg, Yaron
AU - Oron, Dan
PY - 2018/1/1
Y1 - 2018/1/1
N2 - We present a new method for the measurement of the stimulated Raman spectrum based on time-dependent spatial modulation of a laser beam as it passes through a Raman active medium. This effect is similar to the instantaneous Kerr lensing and Kerr deflection yet involves resonant vibrations which result in a time-dependent refractive index change. We use sub-nanojoule pulses together with a sensitive pump-probe measurement apparatus to excite and detect the fine (10-5-10-4) temporal and spatial variations in intensity resulting from the Raman-induced Kerr effect. We demonstrate the effect by changing the spatial overlap between the pump and probe at the sample and measuring the time-dependent deformation of the probe beam's cross section. This method is particularly useful for detection of low-frequency Raman lines, as we demonstrate by measuring the Raman spectrum of neat liquids in a cuvette.
AB - We present a new method for the measurement of the stimulated Raman spectrum based on time-dependent spatial modulation of a laser beam as it passes through a Raman active medium. This effect is similar to the instantaneous Kerr lensing and Kerr deflection yet involves resonant vibrations which result in a time-dependent refractive index change. We use sub-nanojoule pulses together with a sensitive pump-probe measurement apparatus to excite and detect the fine (10-5-10-4) temporal and spatial variations in intensity resulting from the Raman-induced Kerr effect. We demonstrate the effect by changing the spatial overlap between the pump and probe at the sample and measuring the time-dependent deformation of the probe beam's cross section. This method is particularly useful for detection of low-frequency Raman lines, as we demonstrate by measuring the Raman spectrum of neat liquids in a cuvette.
UR - http://www.scopus.com/inward/record.url?scp=85055401781&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85055401781&partnerID=8YFLogxK
U2 - 10.1063/1.5029809
DO - 10.1063/1.5029809
M3 - Article
VL - 3
JO - APL Photonics
JF - APL Photonics
SN - 2378-0967
IS - 9
M1 - 092501
ER -