Ultrashort pulse Kagome hollow-core photonic crystal fiber delivery for nonlinear optical imaging

Andreana, Marco; Le, Tuan; Drexler, Wolfgang; Unterhuber, Angelika

doi:10.1364/ol.44.001588

Cited by 23 publications

(11 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For FWM and dispersion-free laser delivery, air guidance in hollow-core optical fibers can be employed, but at the cost of relatively high losses of several dB per meter of fiber 19 . For non-linear microscopy, hollow-core fibers enable a pulse delivery up to the μJ level 20 – 23 . However, the large mode field diameter and low NA are still problematic, as they require micro-lenses to be mounted at the tip of the scanning fiber as an NA converter for endoscopic applications 11 .…”

Section: Introductionmentioning

confidence: 99%

Multimodal nonlinear endomicroscopic imaging probe using a double-core double-clad fiber and focus-combining micro-optical concept

et al. 2021

View full text Add to dashboard Cite

Multimodal non-linear microscopy combining coherent anti-Stokes Raman scattering, second harmonic generation, and two-photon excited fluorescence has proved to be a versatile and powerful tool enabling the label-free investigation of tissue structure, molecular composition, and correlation with function and disease status. For a routine medical application, the implementation of this approach into an in vivo imaging endoscope is required. However, this is a difficult task due to the requirements of a multicolour ultrashort laser delivery from a compact and robust laser source through a fiber with low losses and temporal synchronization, the efficient signal collection in epi-direction, the need for small-diameter but highly corrected endomicroobjectives of high numerical aperture and compact scanners. Here, we introduce an ultra-compact fiber-scanning endoscope platform for multimodal non-linear endomicroscopy in combination with a compact four-wave mixing based fiber laser. The heart of this fiber-scanning endoscope is an in-house custom-designed, single mode, double clad, double core pure silica fiber in combination with a 2.4 mm diameter NIR-dual-waveband corrected endomicroscopic objective of 0.55 numerical aperture and 180 µm field of view for non-linear imaging, allowing a background free, low-loss, high peak power laser delivery, and an efficient signal collection in backward direction. A linear diffractive optical grating overlays pump and Stokes laser foci across the full field of view, such that diffraction-limited performance is demonstrated for tissue imaging at one frame per second with sub-micron spatial resolution and at a high transmission of 65% from the laser to the specimen using a distal resonant fiber scanner.

show abstract

Section: Introductionmentioning

confidence: 99%

Multimodal nonlinear endomicroscopic imaging probe using a double-core double-clad fiber and focus-combining micro-optical concept

et al. 2021

View full text Add to dashboard Cite

show abstract

“…It is well known that pre-chirping the input pulse into an optical fiber can be used to control the nonlinear propagation. The pre-chirp management technique has been applied to nonlinear pulse amplification [27,28], delivery of femtosecond pulses [29][30][31], nonlinear pulse compression [32][33][34], dispersive wave generation [35], soliton self-frequency shift [36], and self-phase modulation enabled spectral selection for generating widely tunable femtosecond pulses [37]. Here we propose to pre-chirp the input pulse to control ASC in pressure-gradient HCFs.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

Pre-Chirp-Managed Adiabatic Soliton Compression in Pressure-Gradient Hollow-Core Fibers

2021

View full text Add to dashboard Cite

Post-pulse-compression is demanded to produce energetic few-cycle pulses. We propose pre-chirp-managed adiabatic soliton compression (ASC) in gas-filled pressure-gradient hollow-core fibers to suppress the detrimental pedestals and therefore significantly improve the compressed pulse quality. We show that two-stage ASC can compress 125 μJ, 130 fs pulses at 2 μm to a nearly two-cycle pulse 15 fs in duration. Our analytical analysis suggests that ASC is in favor of compressing pulses centered at a longer wavelength. As an example, a 280 μJ, 220 fs Gaussian pulse at 4 μm is compressed to 60 fs with minimal pedestals. We expect that the resulting high-quality, energetic few-cycle pulses will find important applications in high-field science.

show abstract

“…Photonic crystal fibers (PCFs) are a flexible and adjustable class of optical fibers that open the door to new possibilities in nonlinear optics [36], optical sensing [37], and optical imaging [38]. As demonstrated in Figure 12, PCFs have a core that is encircled by a periodic array of air-holes that works as a cladding of the fiber [11].…”

Section: Plasmonic Biosensors Based On Photonic Crystal Fibersmentioning

confidence: 99%

“…As demonstrated in Figure 12, PCFs have a core that is encircled by a periodic array of air-holes that works as a cladding of the fiber [11]. PCFs offer numerous unique features such as the possibility of realizing ultra-flattened dispersion, endlessly single mode operation, low propagation losses, and controllable nonlinearity [36][37][38].…”

Section: Plasmonic Biosensors Based On Photonic Crystal Fibersmentioning

confidence: 99%

Overview of Recent Advances in the Design of Plasmonic Fiber-Optic Biosensors

Monfared

2020

Biosensors

View full text Add to dashboard Cite

Plasmonic fiber-optic biosensors combine the flexibility and compactness of optical fibers and high sensitivity of nanomaterials to their surrounding medium, to detect biological species such as cells, proteins, and DNA. Due to their small size, accuracy, low cost, and possibility of remote and distributed sensing, plasmonic fiber-optic biosensors are promising alternatives to traditional methods for biomolecule detection, and can result in significant advances in clinical diagnostics, drug discovery, food process control, disease, and environmental monitoring. In this review article, we overview the key plasmonic fiber-optic biosensing design concepts, including geometries based on conventional optical fibers like unclad, side-polished, tapered, and U-shaped fiber designs, and geometries based on specialty optical fibers, such as photonic crystal fibers and tilted fiber Bragg gratings. The review will be of benefit to both engineers in the field of optical fiber technology and scientists in the fields of biosensing.

show abstract

Ultrashort pulse Kagome hollow-core photonic crystal fiber delivery for nonlinear optical imaging

Cited by 23 publications

References 30 publications

Multimodal nonlinear endomicroscopic imaging probe using a double-core double-clad fiber and focus-combining micro-optical concept

Multimodal nonlinear endomicroscopic imaging probe using a double-core double-clad fiber and focus-combining micro-optical concept

Pre-Chirp-Managed Adiabatic Soliton Compression in Pressure-Gradient Hollow-Core Fibers

Overview of Recent Advances in the Design of Plasmonic Fiber-Optic Biosensors

Contact Info

Product

Resources

About