Phase-synchronous detection of coherent and incoherent nonlinear signals
(2016) In Journal of Optics 18(1).- Abstract
- The nonlinear optical response of a material system contains detailed information about its electronic structure. Standard approaches to nonlinear spectroscopy often use multiple beams crossed in a sample, and detect the wave vector matched polarization in transmission. Here, we apply a phase-synchronous digital detection scheme using an excitation geometry with two phase-modulated collinear ultrafast pulses. This scheme can be used to efficiently detect nonlinear coherent signals and incoherent signals, such as higher harmonics and multiphoton fluorescence and photocurrent, from various systems including a photocell device. We present theory and experiment to demonstrate that when the phase of each laser pulse is modulated at the... (More)
- The nonlinear optical response of a material system contains detailed information about its electronic structure. Standard approaches to nonlinear spectroscopy often use multiple beams crossed in a sample, and detect the wave vector matched polarization in transmission. Here, we apply a phase-synchronous digital detection scheme using an excitation geometry with two phase-modulated collinear ultrafast pulses. This scheme can be used to efficiently detect nonlinear coherent signals and incoherent signals, such as higher harmonics and multiphoton fluorescence and photocurrent, from various systems including a photocell device. We present theory and experiment to demonstrate that when the phase of each laser pulse is modulated at the frequency phi(1) and phi(2), respectively, nonlinear signals can be isolated at the frequencies n(phi(2) - phi(1)), where n = 0, 1, 2, ... . This approach holds promise for performing nonlinear spectroscopic measurements under low-signal conditions. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/8539916
- author
- Karki, Khadga Jung LU ; Kringle, Loni ; Marcus, Andrew H. and Pullerits, Tönu LU
- organization
- publishing date
- 2016
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- nonlinear optics, ultrafast optics, phase-modulation
- in
- Journal of Optics
- volume
- 18
- issue
- 1
- article number
- 015504
- publisher
- IOP Publishing
- external identifiers
-
- wos:000367187000032
- scopus:84951790806
- ISSN
- 2040-8986
- DOI
- 10.1088/2040-8978/18/1/015504
- language
- English
- LU publication?
- yes
- id
- a5f22345-bcea-40c7-84ee-2f4db172713a (old id 8539916)
- date added to LUP
- 2016-04-01 10:27:02
- date last changed
- 2023-11-09 21:12:32
@article{a5f22345-bcea-40c7-84ee-2f4db172713a,
abstract = {{The nonlinear optical response of a material system contains detailed information about its electronic structure. Standard approaches to nonlinear spectroscopy often use multiple beams crossed in a sample, and detect the wave vector matched polarization in transmission. Here, we apply a phase-synchronous digital detection scheme using an excitation geometry with two phase-modulated collinear ultrafast pulses. This scheme can be used to efficiently detect nonlinear coherent signals and incoherent signals, such as higher harmonics and multiphoton fluorescence and photocurrent, from various systems including a photocell device. We present theory and experiment to demonstrate that when the phase of each laser pulse is modulated at the frequency phi(1) and phi(2), respectively, nonlinear signals can be isolated at the frequencies n(phi(2) - phi(1)), where n = 0, 1, 2, ... . This approach holds promise for performing nonlinear spectroscopic measurements under low-signal conditions.}},
author = {{Karki, Khadga Jung and Kringle, Loni and Marcus, Andrew H. and Pullerits, Tönu}},
issn = {{2040-8986}},
keywords = {{nonlinear optics; ultrafast optics; phase-modulation}},
language = {{eng}},
number = {{1}},
publisher = {{IOP Publishing}},
series = {{Journal of Optics}},
title = {{Phase-synchronous detection of coherent and incoherent nonlinear signals}},
url = {{http://dx.doi.org/10.1088/2040-8978/18/1/015504}},
doi = {{10.1088/2040-8978/18/1/015504}},
volume = {{18}},
year = {{2016}},
}