KTiOPO₄ (Potassium titanyl phosphate, KTP)

Semiconductors and photonic platforms anisotropic

3 datasets, together covering 0.43–3.54 µm. Default: Kato and Takaoka 2002: n(α) 0.43–3.54 µm.

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Tick datasets in the list to add them to the plot (up to 12).

Datasets

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# KTiOPO4 (Potassium titanyl phosphate, KTP): Kato and Takaoka 2002: n(α) 0.43–3.54 µm
ktiopo4 = ls.fetch_refractiveindex("main", "KTiOPO4", "Kato-α", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ktiopo4.range_nm)  # (430, 3540) nm
eps = ktiopo4.eps([633])  # complex permittivity

Downloads the original record once (pinned to the imported snapshot) and caches it.

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_86cfb56a1fb2/lightsmith"
ktiopo4 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(ktiopo4.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (ktiopo4/kato-takaoka-2002).

# ... load ktiopo4 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=ktiopo4)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=430, stop_nm=1000, num=81),
)
res = ls.solve(sim)  # exact Mie for a sphere
print(res.q_ext)     # extinction efficiency at each wavelength

Same spec runs with DDA, FDTD, BEM or T-matrix: ls.compare(sim, ["mie", "dda"]).

Materials guide Open a sphere of it in Studio Quick start Ask the community

Lightsmith is open source (MIT): Mie, T-matrix, BEM, DDA, FDTD, RCWA, TMM, mode solvers and inverse design behind one spec, on CPU or GPU. GitHub.

About KTiOPO4 (Potassium titanyl phosphate, KTP)

Potassium titanyl phosphate (KTiOPO₄, commonly abbreviated as KTP) is a nonlinear optical material widely used in a variety of photonic applications, including frequency doubling of laser sources, optical parametric oscillation, and electro-optic modulation. KTP exhibits a broad transparency range from approximately 350 nm to 4.5 μm. One of its noteworthy advantages is its high damage threshold, which makes it suitable for high-power laser applications. The crystal also exhibits good phase-matching conditions over an extensive range of wavelengths, making it a material of choice for tunable and multi-wavelength laser sources. It's commonly utilized in green laser pointers via frequency doubling of Nd:YAG or Nd:YVO₄ lasers, which emit at 1064 nm. Overall, KTP's combination of optical and mechanical properties make it an important material in the field of nonlinear optics.

Other names: Potassium titanyl phosphate, KTP, Potassium titanyl phosphate, KTP

API: /v1/materials/mat_e4cf812fab3d · slug ktiopo4