PATENT CLAIM ANALYSIS

Application Number: 15746730
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["372", "025000"]

Abstract:
The present disclosure provides an excimer laser system. A master oscillator chamber may generate laser pulses with a narrowed line width and a small energy by means of a line width narrowing module, as a seed light. The seed light is refracted by a master oscillator wavefront engineering box and then incident into a power amplifier chamber through a beam splitting system. The beam splitting system, a first high reflectance mirror, a second high reflectance mirror and a third high reflectance mirror may constitute a quadrilateral annular optical path, The power amplifier chamber may have a first pair of Brewster windows and a second pair of Brewster windows, wherein the first pair of Brewster windows is located in a first optical path of the annular optical path along with a discharging electrode of the power amplifier chamber, and the second pair of Brewster windows is located in a second optical path of annular optical path which is parallel to a first amplification optical path. The present disclosure reduces the length of a ring cavity of an excimer laser system with a ring cavity structure, increasing the amplification times and achieving a deeper gain saturation amplification than a traditional structure, thereby improving the output characteristic of the excimer laser system.

Claim (Index 1):
An excimer laser system, comprising: a master oscillator chamber (MO), a power amplifier chamber (PA), a line width narrowing module (LNM), a line width analysis module (LAM), a master oscillator wavefront engineering box (MO WEB), an optical pulse stretcher (OPS), an auto shutter, a partial reflectance mirror (PR), a beam splitting system (Splitter), a first high reflectance mirror (HR 1 ), a second high reflectance mirror (HR 2 ) and a third high reflectance mirror (HR 3 ),\n the master oscillator chamber (MO) generates laser pulses with a narrowed line width and a small energy by means of the line width narrowing module (LNM) as a seed light, wherein the seed light is refracted by the master oscillator wavefront engineering box (MO WEB) and then injected into the power amplifier chamber (PA) through the beam splitting system (Splitter), the beam splitting system (Splitter), the first high reflectance mirror (HR 1 ), the second high reflectance mirror (HR 2 ) and the third high reflectance mirror (HR 3 ) constitute a quadrilateral annular optical path, the power amplifier chamber (PA) has a first pair of Brewster windows (B 1 , B 1 \u2032) and a second pair of Brewster windows (B 2 , B 2 \u2032), wherein the first pair of Brewster windows (B 1 , B 1 \u2032) is located in a first optical path of the annular optical path along with a discharging electrode of the power amplifier chamber (PA), and the second pair of Brewster windows (B 2 , B 2 \u2032) is located in a second optical path of annular optical path which is parallel to the first amplification optical path.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 86.0
- Lexical Diversity: 2.49438
- Patent Class: 372.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['10881103', '11981449', '10804281', '10854614', '11981290']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8132463017418285
- 35 USC 102 Novelty (BERT): 0.4858264001777119
- Combined Prediction Score: 0.780504311585417
- Mean Citation Score: 215.524136
- Max Citation Score: 219.47455
- Similarity Product: 172.5583841580749

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test