By Jose Solé, Luisa Bausa, Daniel Jaque
This sensible consultant to spectroscopy and inorganic fabrics meets the call for from academia and the technology neighborhood for an introductory textual content that introduces different optical spectroscopic options, utilized in many laboratories, for fabric characterisation.
- Treats the main simple points to be brought into the sector of optical spectroscopy of inorganic fabrics, permitting a scholar to interpret easy optical (absorption, reflectivity, emission and scattering) spectra
- Contains basic, illustrative examples and solved exercises
- Covers the idea, instrumentation and functions of spectroscopy for the characterisation of inorganic fabrics, together with lasers, phosphors and optical fabrics corresponding to photonics
This is a perfect beginner’s consultant for college kids with a few prior wisdom in quantum mechanics and optics, in addition to a reference resource for execs or researchers in fabrics technology, specially the becoming box of optical materials.
Read Online or Download An Introduction to the Optical Spectroscopy of Inorganic Solids PDF
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Additional info for An Introduction to the Optical Spectroscopy of Inorganic Solids
16. In this quantum system, h¯ Ω corresponds to the energy of a real vibrational (phonon) state and the incident photon of energy h¯ ω0 is absorbed by exciting the system up to a virtual state. The Stokes Raman scattering occurs as a result of photon absorption from the ground state to a virtual state, followed by a depopulation to a phonon-excited state. On the other hand, the anti-Stokes Raman scattering is explained as being a result of photon absorption from the phonon-excited state to a virtual state, followed by a depopulation down to the ground state.
An optical material has an absorption coefﬁcient of 10 cm−1 at 400 nm. (a) What thickness of material must you cut to fabricate an optical ﬁlter with optical density of 3 at 400 nm? (b) If you have a laser of 1 W power at this wavelength but you WY062-01 WY062-Sole January 5, 2005 11:28 Char Count= 0 EXERCISES 37 want to illuminate a sample with only 1 m W, how many of these ﬁlters do you need? 4. 0 at a wavelength of 633 nm. (a) Determine the transmittance and the absorbance of the ﬁlter at this wavelength.
5) where σ (ν) is the so-called transition cross section. 6) where the transition cross section σ (ν) (normally given in cm2 ) represents the ability of our system to absorb the incoming radiation of frequency ν. Indeed, the transition cross section is related to the matrix element | < Ψ f |H |Ψ i > | of our two-level system, where Ψ i and Ψ f denote the eigenfunctions of the ground and excited states, respectively, and H is the interaction Hamiltonian between the incoming light and the system.