flexcompute · momchil-flex · Jun 12, 2025 · Jun 10, 2025
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.9.0rc1] - 2025-06-10
+
 ### Added
 
 - Fields `convex_resolution`, `concave_resolution`, and `mixed_resolution` in `CornerFinderSpec` can be used to take into account the dimensions of autodetected convex, concave, or mixed geometric features when `dl_min` is automatically inferred during automatic grid generation.
@@ -31,6 +33,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Characteristic impedance calculations in the `ImpedanceCalculator` using definitions that rely on flux, which were giving incorrect results for lossy transmission lines.
 - Fixed handling of symmetry when creating adjoint field sources and added warning when broken up adjoint simulations do not have the same symmetry as the forward simulation.
 - Validation for `CustomGridBoundaries`, which was previously allowing unsorted arrays and arrays with less than two entries.
+- `DiffractionMonitor` results to apply finite grid field corrections for higher precision when comparing e.g. to `FluxMonitor` computations of total power.
 
 ### Changed
 - Relaxed bounds checking of path integrals during `WavePort` validation.
@@ -1656,7 +1659,8 @@ which fields are to be projected is now determined automatically based on the me
 - Job and Batch classes for better simulation handling (eventually to fully replace webapi functions).
 - A large number of small improvements and bug fixes.
 
-[Unreleased]: https://github.com/flexcompute/tidy3d/compare/v2.8.4...develop
+[Unreleased]: https://github.com/flexcompute/tidy3d/compare/v2.9.0rc1...develop
+[2.9.0rc1]: https://github.com/flexcompute/tidy3d/compare/v2.8.4...v2.9.0rc1
 [2.8.4]: https://github.com/flexcompute/tidy3d/compare/v2.8.3...v2.8.4
 [2.8.3]: https://github.com/flexcompute/tidy3d/compare/v2.8.2...v2.8.3
 [2.8.2]: https://github.com/flexcompute/tidy3d/compare/v2.8.1...v2.8.2

diff --git a/docs/faq b/docs/faq
diff --git a/docs/notebooks b/docs/notebooks
diff --git a/tests/sims/full_charge.h5 b/tests/sims/full_charge.h5
diff --git a/tests/sims/full_charge.json b/tests/sims/full_charge.json
@@ -377,7 +377,7 @@
         "min_edges_per_side": 2.0,
         "non_refined_structures": []
     },
-    "version": "2.8.4",
+    "version": "2.9.0rc1",
     "plot_length_units": "\u03bcm",
     "structure_priority_mode": "equal",
     "analysis_spec": {

diff --git a/tests/sims/full_conduction.h5 b/tests/sims/full_conduction.h5
diff --git a/tests/sims/full_conduction.json b/tests/sims/full_conduction.json
@@ -277,7 +277,7 @@
         "min_edges_per_side": 2.0,
         "non_refined_structures": []
     },
-    "version": "2.8.4",
+    "version": "2.9.0rc1",
     "plot_length_units": "\u03bcm",
     "structure_priority_mode": "equal",
     "analysis_spec": null

diff --git a/tests/sims/full_fdtd.h5 b/tests/sims/full_fdtd.h5
+10 −0		_faqs/how-can-i-simulate-bent-waveguides-with-eme.md
+38 −0		_faqs/how-do-i-export-simulation-data-output-to-matlab-format.md
+7 −0		_faqs/how-do-i-model-periodic-structures-with-eme.md
+11 −0		_faqs/how-do-i-run-a-sweep-with-eme.md
+15 −0		_faqs/how-do-i-set-an-eme-simulation.md
+11 −0		_faqs/how-to-define-the-number-of-modes-for-an-eme-simulation.md
+11 −0		_faqs/what-is-eme.md
+9 −1		_faqs/why-does-the-kernel-crash-sometimes-when-using-the-web-based-python-notebook.md
+12 −0		docs/eme.rst
+10 −0		docs/faq/how-can-i-simulate-bent-waveguides-with-eme.md
+22 −0		docs/faq/how-do-i-export-simulation-data-output-to-matlab-format.md
+7 −0		docs/faq/how-do-i-model-periodic-structures-with-eme.md
+11 −0		docs/faq/how-do-i-run-a-sweep-with-eme.md
+15 −0		docs/faq/how-do-i-set-an-eme-simulation.md
+11 −0		docs/faq/what-is-eme.md
+9 −1		docs/faq/why-does-the-kernel-crash-sometimes-when-using-the-web-based-python-notebook.md
+11 −0		faq_categories.json
+1,798 −11,368		90BendPolarizationSplitterRotator.ipynb
+242 −1,545		AdjointPlugin14PreFab.ipynb
+124 −26		AllDielectricStructuralColor.ipynb
+448 −58		AnisotropicMetamaterialBroadbandPBS.ipynb
+1,598 −387		Autograd20MetalensWaveguideTaper.ipynb
+1,411 −257		Autograd21GaPLightExtractor.ipynb
+85 −254		CMOSRGBSensor.ipynb
+215 −1,818		CavityFOM.ipynb
+317 −1,676		DielectricMetasurfaceAbsorber.ipynb
+1,174 −0		DirectionalScatteringNanodisks.ipynb
+407 −51		DisorderedPlasmonicColor.ipynb
+2 −0		GDSExport.ipynb
+1,225 −270		GeneticAlgorithmReflector.ipynb
+1,015 −5,981		GradientMetasurfaceReflector.ipynb
+1,289 −0		GroupDelayCalculation.ipynb
+1 −1		HeatSolver.ipynb
+1,773 −422		IntegratedVivaldiAntenna.ipynb
+1,661 −365		MachZehnderModulator.ipynb
+520 −173		MetalOxideSunscreen.ipynb
+267 −811		Metalens.ipynb
+482 −50		MetasurfaceBIC.ipynb
+1,196 −119		MultipoleExpansion.ipynb
+318 −48		OpticalSwitchDBS.ipynb
+926 −15,178		PhotonicCrystalsComponents.ipynb
+641 −540		PlasmonicNanorodArray.ipynb
+224 −832		ResonanceFinder.ipynb
+158 −746		RingResonator.ipynb
+449 −48		SWGWaveguideCrossing.ipynb
+799 −160		SbendCMAES.ipynb
+899 −0		SiWaveguideTPA.ipynb
+44 −236		StartHere.ipynb
+638 −108		Symmetry.ipynb
+720 −0		TopoQuantumPhC.ipynb
+652 −626		TunableChiralMetasurface.ipynb
+178 −99		VizSimulation.ipynb
+189 −2,230		WaveguideCrossing.ipynb
+752 −2,341		WaveguideGratingAntenna.ipynb
+440 −150		XarrayTutorial.ipynb
+290 −556		YJunction.ipynb
+2 −1		docs/case_studies/nanophotonics.rst
+1 −0		docs/case_studies/photonic_crystals.rst
+1 −1		docs/case_studies/pic.rst
+1 −0		docs/features/data_visualisation.rst
+ −		img/TPA_FCA.png
+ −		img/cylinder.png
+ −		img/topological_phc.png
+ −		misc/prefab_gc.gds