New Directions in Thin Film Nanophotonics

Preface

Contents

Development and Applications of Metal/Dielectric Resonant Cavity-Based Thin Film Structures

1 Perfect Light Absorption in Thin and Ultra-Thin Films and Its Applications

1.1 Introduction

1.2 Approaches to Realize Perfect Light Absorbers

1.3 Lithography-Free Perfect Light Absorption in Critically Coupled, Interference Based, Thin and Ultrathin Films

1.4 Designer Perfect Light Absorption in Thin Film Absorbers

1.4.1 Designer Wavelength Range

1.4.2 Designer Absorption Bandwidth

1.4.3 Designer Profile of Optical Losses

1.4.4 Designer Perfect Light Absorption Angle

1.5 Iridescence Properties of Thin-Film Interference-Based Light Absorbers

1.6 Thermally Induced Perfect Light Absorption in Low Reflectance Metals

1.7 Applications

1.7.1 Structural Colors Using Thin-Film Light Absorbers

1.7.2 Hydrogen Gas Sensing Using Thin-Film Light Absorbers

References

2 Realization of Point-of-Darkness and Extreme Phase Singularity in Nanophotonic Cavities

2.1 Topological Darkness

2.2 Lithography-Free Nanophotonic Cavities

2.3 Singular Phase at the Point-of-Darkness

2.4 Phase-Sensitive Biosensing

2.5 Microfluidics Integrated Cavities

2.6 Real-Time Sensing of Small Biomolecules

References

3 Phase Change Material-Based Nanophotonic Cavities for Reconfigurable Photonic Device Applications

3.1 Phase Change Material-Tuned Photonics

3.2 Tunable Color Filters Based on Multilayer Stacks

3.3 Tunable Perfect Absorption

3.4 Tunable Singular Phase at the Point-of-Darkness

3.5 Enhanced and Tunable Goos-Hanchen Shift at the Point-of-Darkness

References

4 Sub-wavelength Nanopatterning Using Thin Metal Films

4.1 Laser Interference Lithography

4.2 Evanescent Wave Interference Lithography

4.3 Plasmonic Lithography

4.4 Theoretical Analysis of Surface Plasmon Interference

4.5 Numerical Analysis of Surface Plasmon Interference

4.6 Nanopatterning Based on Multiple Beams Surface Plasmon Interference

References

Development and Applications of Multilayered Hyperbolic Metamaterials

5 Dielectric Singularities in Hyperbolic Metamaterials

5.1 Introduction

5.2 Effective Medium Theory and HMMs Dispersion Relation

5.3 Design of the Epsilon-Near-Zero-and-Pole Condition

5.4 Far-Field Analysis and Scattering Parameters of Ag/ITO ENZP HMM

5.5 Light Propagation at the ENZP Wavelength and Supercollimation Effect

5.6 ENZP Perfect Lens

5.7 Three Materials ENZP HMMs

References

6 Resonant Gain Singularities in Hyperbolic Metamaterials

6.1 Resonant Gain Epsilon-Near-Zero and Pole Condition

6.2 Design of the Gain Blend

6.2.1 Step 1—Selecting a High Refractive Index Dielectric

6.2.2 Step 2—Selecting a Dye with Emission Peaked at 426 nm

6.2.3 Step 3—Calculating the Value of ?d'' for Which ? '' Shows a Pole at 426 nm

6.2.4 Step 4 and 5—Calculation of the Concentration overlineN0 of Dye Molecules and of the “Gain Blend” Effective Permittivity

6.2.5 Step 6—Verifying the Presence of the “Resonant Gain Singularity” in ? '' at the ENZP Wavelength

6.3 Supercollimation and Light Amplification in the RG-HMM

6.4 Self-Amplified Perfect Lens (APL)

References

7 Metal/Photoemissive-Blend Hyperbolic Metamaterials for Controlling the Topological Transition

7.1 Introduction

7.2 Design, Fabrication and Characterization of the Thermo-Responsive Blend

7.3 Design, Fabrication and Characterization of the HMM Embedding the Thermo-Responsive Blend

7.4 Thermal Tunability of the Optical and Photophysical Response of the HMM

References

8 Guided Modes of Hyperbolic Metamaterial and Their Applications

8.1 Guided Modes of Hyperbolic Metamaterials

8.2 Excitation of Guided Modes of HMM

8.2.1 Using Grating Coupling Technique

8.2.2 Using Prism Coupling Technique

8.3 Applications of Grating-Coupled HMMs

8.3.1 Ultrasensitive Plasmonic Biosensing

8.3.2 Spontaneous Emission Enhancement

8.3.3 Multiband, Broad- and Narrow-Band Perfect Absorption and Absorption-Based Plasmonic Sensors

References

9 Graphene and Topological Insulator-Based Active THz Hyperbolic Metamaterials

9.1 Introduction

9.2 Graphene-Based Hyperbolic Metamaterials

9.3 Van der Waals Superlattice-Based Hyperbolic Metamaterials

9.4 Negative Refraction in THz Hyperbolic Metamaterials

9.4.1 Negative Refraction in Graphene-Based HMMs

9.4.2 Negative Refraction in Topological Insulator-Based HMMs

9.5 Excitation of BBP Modes of Graphene-Based HMMs

9.6 Active Hyperbolic Metamaterials Based on Topological Insulator and Phase Change Material

References