Emission spectroscopy of NaYF<sub>4</sub>:Eu nanorods optically trapped by Fresnel lens fibers

Aashutosh Kumar; Asa Asadollahbaik; Jeongmo Kim; Khalid Lahlil; Simon Thiele; Alois M. Herkommer; Síle Nic Chormaic; Jongwook Kim; Thierry Gacoin; Harald Giessen; Jochen Fick

doi:10.1364/PRJ.434645

Photonics Research, Volume. 10, Issue 2, 332(2022)

Emission spectroscopy of NaYF₄:Eu nanorods optically trapped by Fresnel lens fibers

Aashutosh Kumar1... Asa Asadollahbaik2, Jeongmo Kim3, Khalid Lahlil3, Simon Thiele4, Alois M. Herkommer4, Síle Nic Chormaic1,5, Jongwook Kim3, Thierry Gacoin3, Harald Giessen2 and Jochen Fick1,* |Show fewer author(s)

Author Affiliations

¹Université Grenoble Alpes, CNRS, Institut Néel, 38000 Grenoble, France

²4th Physics Institute and Research Center SCoPE, University of Stuttgart, 70569 Stuttgart, Germany

³Université Paris Saclay, CNRS, Laboratoire de Physique de la Matière Condensée, École Polytechnique, 91128 Palaiseau, France

⁴Institute of Applied Optics and Research Center SCoPE, University of Stuttgart, 70569 Stuttgart, Germany

⁵Okinawa Institute of Science and Technology Graduate University, Okinawa 904-0495, Japan

show less

Figures & Tables(9)

Fig. 1. (a) SEM image of NaYF4:Eu3+ nanorods. (b) SEM image and CAD drawing of the Fresnel lens fiber. (c) Schematic of the optical fiber tweezers setup.

Download full size

View in Article

Fig. 2. Optical trapping results. (a) PL intensity as a function of the number of nanorods in the trapped cluster. Inset: microscope photoluminescence image of a trapped nanorod. (b) Particle tracking plot for one single nanorod and clusters of two or three rods (P=32.2 mW). (c) Corresponding position (transverse and axial) and angular distributions. Inset: angular distribution width.

Download full size

View in Article

Fig. 3. Power spectrum analysis in axial and transverse directions for trapping of (a) one single rod and (b) a three-rod cluster. Lines are best fits to Eq. (2) (in the transverse direction, the fitting range is limited to frequencies f>2.5 Hz).

Download full size

View in Article

Fig. 4. Power dependent trap stiffness κ in the (a) transverse and (b) axial directions. The lines are linear fits through the origin to calculate the normalized trapping stiffness κ˜ shown in the insets as a function of number of nanorods in the trapped cluster (lines are guides to the eye; BS, Boltzmann statistics; PSA, power spectrum analysis).

Download full size

View in Article

Fig. 5. (a) Emission spectra of optically trapped nanorods NaYF4:Eu3+ for σ and π orientations. Inset: comparison with the emission of nanorod clusters on a glass substrate. (b) Eu3+ energy level diagram.

Download full size

View in Article

Fig. 6. Europium emission polarization properties. (a)–(c) Gaussian peak distribution applied for fitting the respective emission lines, (d)–(f) polar emission amplitude plots, and (g)–(j) schemes showing the respective electric and magnetic dipole orientations and main emission polarizations. The lines in the polar plots are best numerical fits to Eq. (4).

Download full size

View in Article

Fig. 7. (a) Photoluminescence (PL) decay for trapped nanorods at different pump powers. The lines are single exponential fits. (b) Pumper power dependent decay time. (c) PL decay for trapped nanorods and a nanorods cluster on a glass substrate.

Download full size

View in Article

Table 1. Transverse and Axial Normalized Trap Stiffness κ˜ Obtained by Boltzmann Statistics (BS) and Power Spectrum Analysis (PSA) and Angular Orientation Width σθ for One, Two, and Three Rods Trapped at P=32.2 mW
View table
View in Article
Table 1. Transverse and Axial Normalized Trap Stiffness κ˜ Obtained by Boltzmann Statistics (BS) and Power Spectrum Analysis (PSA) and Angular Orientation Width σθ for One, Two, and Three Rods Trapped at P=32.2 mW
$\tilde{κ}$ [ $pN \cdot {μm}^{- 1} \cdot W^{- 1}$ ]
BS PSA
Trans. Axial Ratio Trans. Axial Ratio $σ_{θ}$
1 rod 12.2 1.74 7 48.3 – – 5.2°
2 rods 35.0 2.55 13 – – – 4.2°
3 rods 89.3 2.81 32 106 3.76 28 3.9°

Table 2. Main Polar Fitting Parameters for Europium Emission Lines as Shown in Fig. 6^a

View table

View in Article

Table 2. Main Polar Fitting Parameters for Europium Emission Lines as Shown in Fig. 6^a

Peak	Ori.	$λ$ [nm]	$σ$ [nm]	$A$	$B$	$φ$	$α$
${MD}_{590}^{1}$	$π$	588.5	1.32	0.203	0.399	0.3°	63.2°
${MD}_{590}^{2}$	$π$	589.9	0.85	0.027	0.486	3.2°	80.5°
${MD}_{590}^{3}$	$σ$	592.0	1.27	0.642	0.179	3.7°	36.8°
${ED}_{615}^{1}$	–	610.0	0.45	0.369	0.262	–43.7°	–
${ED}_{615}^{2}$	$σ$	614.1	1.53	0.439	0.122	–0.3°	69.6°
${ED}_{615}^{3}$	$π$	617.8	1.20	0.292	0.416	–0.2°	49.8°
${ED}_{695}^{1}$	$σ$	689.1	1.62	0.485	0.302	2.7°	80.0°
${ED}_{695}^{2}$	$π$	694.9	2.05	0.271	0.458	–3.3°	47.4°
${ED}_{695}^{3}$	$π$	699.5	1.15	0.131	0.737	2.3°	30.8°
${ED}_{695}^{4}$	–	702.6	0.88	0.375	0.249	32.6°	–

Tools

Get Citation

Copy Citation Text

Aashutosh Kumar, Asa Asadollahbaik, Jeongmo Kim, Khalid Lahlil, Simon Thiele, Alois M. Herkommer, Síle Nic Chormaic, Jongwook Kim, Thierry Gacoin, Harald Giessen, Jochen Fick, "Emission spectroscopy of NaYF₄:Eu nanorods optically trapped by Fresnel lens fibers," Photonics Res. 10, 332 (2022)

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites

Paper Information

Category: Spectroscopy

Received: Jun. 21, 2021

Accepted: Nov. 18, 2021

Published Online: Jan. 11, 2022

The Author Email: Jochen Fick (jochen.fick@neel.cnrs.fr)

DOI:10.1364/PRJ.434645

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Transverse and Axial Normalized Trap Stiffness κ˜ Obtained by Boltzmann Statistics (BS) and Power Spectrum Analysis (PSA) and Angular Orientation Width σθ for One, Two, and Three Rods Trapped at P=32.2 mW

Table 1. Transverse and Axial Normalized Trap Stiffness κ˜ Obtained by Boltzmann Statistics (BS) and Power Spectrum Analysis (PSA) and Angular Orientation Width σθ for One, Two, and Three Rods Trapped at P=32.2 mW

Table 2. Main Polar Fitting Parameters for Europium Emission Lines as Shown in Fig. 6a

Table 2. Main Polar Fitting Parameters for Europium Emission Lines as Shown in Fig. 6a

微信扫一扫：分享

Table 2. Main Polar Fitting Parameters for Europium Emission Lines as Shown in Fig. 6^a

Table 2. Main Polar Fitting Parameters for Europium Emission Lines as Shown in Fig. 6^a