Method for an accurate measurement of nonlinear refractive index in the case of high-repetition-rate femtosecond laser pulses

Abdullah Shehata; Tarek Mohamed

doi:10.1364/JOSAB.36.001246

Journal of the Optical Society of America B
Vol. 36,
Issue 5,
pp. 1246-1251
(2019)
•https://doi.org/10.1364/JOSAB.36.001246

Method for an accurate measurement of nonlinear refractive index in the case of high-repetition-rate femtosecond laser pulses

Abdullah Shehata and Tarek Mohamed

Not Accessible

Your library or personal account may give you access

Get PDF
Email
Share
Get Citation
Copy Citation Text
Abdullah Shehata and Tarek Mohamed, "Method for an accurate measurement of nonlinear refractive index in the case of high-repetition-rate femtosecond laser pulses," J. Opt. Soc. Am. B 36, 1246-1251 (2019)

Export Citation
- BibTex
- Endnote (RIS)
- HTML
- Plain Text
Citation alert
Save article

Check for updates

Abstract

In this report, we propose a new method for measuring the nonlinear refractive index in liquid and glass samples using femtosecond (fs)-laser pulses with high pulse repetition rates. This method is based on solving the heat equation to derive an expression for the normalized transmittance of closed-aperture Z-scan measurements as a function of the accumulative thermal lens induced by a high-repetition-rate fs laser pulse. To validate this method, the nonlinear refractive indices of acetone as a liquid and soda-lime as a glass material have been measured using a 100 fs pulse duration, 80 MHz repetition rate, and 800 nm wavelength. The extracted nonlinear refractive index is in a good agreement with the reported one using 1 kHz repetition rate fs laser pulses.

Full Article | PDF Article

More Like This

Measuring the nonlinear optical properties of indium tin oxide thin film using femtosecond laser pulses

Mona Ali, Abdullah Shehata, Mohamed Ashour, Wael Z. Tawfik, Reinhold Schuch, and Tarek Mohamed
J. Opt. Soc. Am. B 37(11) A139-A146 (2020)

Measurement of pure optical nonlinearity in carbon disulfide with a high-repetition-rate femtosecond laser

Sumit Singhal, Sirshendu Dinda, and Debabrata Goswami
Appl. Opt. 56(3) 644-648 (2017)

Investigation of thermal nonlinearity due to nJ high repetition rate fs pulses on wrinkled graphene

Soumyodeep Dey, Sudhakara Reddy Bongu, Vijay Kumar Sagar, and Prem Ballabh Bisht
J. Opt. Soc. Am. B 38(6) 2019-2026 (2021)

Previous Article Next Article

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (15)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Material	$\frac{d n}{d T}$ in ( $K^{- 1}$ )	Thermal Conductivity $κ$ in ( $\frac{W}{m K}$ )	Density $ρ$ in ( $\frac{K g}{m^{3}}$ )	Specific Heat $c_{p}$ in ( $\frac{J}{K g K}$ )	Diffusivity D in ( $\frac{m^{2}}{s}$ )
Soda-lime glass	( $4.5 \times 10^{- 6}$ ) ^a	0.9 ^a	2710 ^b	950 ^a	$5.1 \times 10^{- 7}$ ^a
Acetone	( $- 1.8 \times 10^{- 6}$ ) ^c	0.18 ^d	784 ^c	2150 ^c	$1.06 \times 10^{- 7}$

Material	Using Eq. in Ref. [6]		Presented Work		Using 1 kHz
Material	$\| Δ ϕ (rad) \|$	$\| n_{2} ({cm}^{2} / W) \|$	$\| Δ ϕ (rad) \|$	$\| n_{2} ({cm}^{2} / W) \|$	$n_{2} ({cm}^{2} / W)$
Soda-lime glass	1.48	$3.21 \times 10^{- 15}$	0.142	$(3.084 \pm 0.3) \times 10^{- 16}$	( $3.1 \times 10^{- 16}$ ) ^a
Acetone	3.2	$6.13 \times 10^{- 15}$	0.32	$(6.14 \pm 0.6) \times 10^{- 16}$	( $6 \times 10^{- 16}$ ) ^b

Material	$\frac{d n}{d T}$ in ( $K^{- 1}$ )	Thermal Conductivity $κ$ in ( $\frac{W}{m K}$ )	Density $ρ$ in ( $\frac{K g}{m^{3}}$ )	Specific Heat $c_{p}$ in ( $\frac{J}{K g K}$ )	Diffusivity D in ( $\frac{m^{2}}{s}$ )
Soda-lime glass	( $4.5 \times 10^{- 6}$ ) ^a	0.9 ^a	2710 ^b	950 ^a	$5.1 \times 10^{- 7}$ ^a
Acetone	( $- 1.8 \times 10^{- 6}$ ) ^c	0.18 ^d	784 ^c	2150 ^c	$1.06 \times 10^{- 7}$

Material	Using Eq. in Ref. [6]		Presented Work		Using 1 kHz
Material	$\| Δ ϕ (rad) \|$	$\| n_{2} ({cm}^{2} / W) \|$	$\| Δ ϕ (rad) \|$	$\| n_{2} ({cm}^{2} / W) \|$	$n_{2} ({cm}^{2} / W)$
Soda-lime glass	1.48	$3.21 \times 10^{- 15}$	0.142	$(3.084 \pm 0.3) \times 10^{- 16}$	( $3.1 \times 10^{- 16}$ ) ^a
Acetone	3.2	$6.13 \times 10^{- 15}$	0.32	$(6.14 \pm 0.6) \times 10^{- 16}$	( $6 \times 10^{- 16}$ ) ^b

Abstract

Cited By

Figures (5)

Tables (2)

Equations (15)

Journal of the Optical Society of America B