PATENT CLAIM ANALYSIS

Application Number: 15945598
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["359", "328000"]

Abstract:
An optically nonlinear crystal is arranged for frequency-doubling an input pulse. The crystal has parallel facets each coated with a reflective coating. The crystal is arranged with respect to the input pulse such that the input pulse makes a plurality of forward and reverse passes between the coatings. A frequency-doubled pulse is generated on the forward passes. The input pulse and the frequency-doubled pulse propagate with different group velocities in the crystal such that temporal separation the pulses occurs. The crystal and reflective coatings are configured such that the temporal separation does not exceed a predetermined value.

Claim (Index 13):
Optical apparatus for converting pulsed laser-radiation having a first wavelength to pulsed laser-radiation having a second wavelength, the apparatus comprising:\n an optically nonlinear crystal having first and second facets parallel to each other; and first and second reflective coatings, each thereof being highly reflective at the first and second wavelengths, the first reflective coating partially covering the first facet and the second reflective coating at least partially covering the second facet; wherein the crystal and the reflective coatings are configured and arranged such that a pulse at the first wavelength enters the crystal through a portion of the first facet not covered by the first reflective coating, makes at least one forward pass through the crystal and at least one reverse pass through the crystal, after the first forward pass the subsequent passes are directed by the reflective coatings, the forward and reverse passes at an angle to each other; wherein a pulse at the second wavelength is generated from the first-wavelength pulse during the forward passes; wherein there is an increasing temporal separation between the first-wavelength pulse and the second-wavelength pulse during each forward pass through the crystal due to the different group velocities thereof; wherein the temporal separation between the first-wavelength pulse and the second-wavelength pulse created during each forward pass is reduced by an opposite group delay induced by a combination of a subsequent reverse pass through the crystal and reflections from the first and second reflective coatings.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 91.0
- Lexical Diversity: 1.83929
- Patent Class: 359.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['10490844', '12184199', '11387400', '12138042', '12176177']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7984151613465146
- 35 USC 102 Novelty (BERT): 0.4669830437690327
- Combined Prediction Score: 0.7652719495887664
- Mean Citation Score: 199.657878
- Max Citation Score: 229.3846
- Similarity Product: 203.4052861497164

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test