Back to results
US 10,761,068 B2Granted
Method and apparatus for spectroscopy
AssigneeNokia Technologies Oy
InventorDavid Bitauld
Life of this patent
Estimating the term…
Abstract
A method including: generating a first comb optical signal; generating a second comb optical signal; exciting a sample using in combination the first comb optical signal and the second comb optical signal; and detecting at the sample an acoustic response of the sample.
Claims13
A method comprising:
- generating a first comb optical signal;
- generating a second comb optical signal;
- exciting a sample using in combination the first comb optical signal and the second comb optical signal;
- and
- detecting at the sample an acoustic response of the sample,
- wherein the sample is optically excited along an axis, and the acoustic response of the sample is detected off-axis.
3 more elements
An apparatus comprising:
- a generator configured to generate a first comb optical signal;
- a generator configured to generate a second comb optical signal;
- optics configured to cause excitation of a sample by combining the first comb optical signal and the second comb optical signal;
- and
- one or more pressure transducers configured to detect at the sample pressure variations caused by an acoustic response of the sample, and
- further comprising:
- a holder for the sample, wherein the combination of the first comb optical signal and the second comb optical signal enters the holder for the sample along an axis via an on-axis window in the holder, and wherein each of the one or more pressure transducers configured to detect at the sample pressure variations caused by an acoustic response of the sample is optimized for a different range of acoustic frequencies and is located off-axis.
4 more elements
Dependencies are inferred from the claim text.