Title:
WAVELENGTH LOCKER AND WAVELENGTH VARIABLE LIGHT SOURCE WITH BUILT-IN WAVELENGTH LOCKER
Document Type and Number:
WIPO Patent Application WO/2024/095424
Kind Code:
A1
Abstract:
A beam splitter (3) divides a laser beam (2) to generate a first beam (5). An etalon (6) transmits therethrough a portion of the first beam (5), and reflects the remaining portion of the first beam (5) on an end surface thereof to generate a reflected beam (7). A reflection unit (8) reflects the reflected beam (7) and causes the same to enter the etalon (6) as a second beam (9). Reception elements (10, 11) respectively receive the first beam (5) and the second beam (9) transmitted through the etalon (6). The first beam (5) and the second beam (9) have different angles of entry with respect to the etalon (6), and are different in optical path length in the etalon (6).
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Inventors:
YAMAMOTO SHUHEI (JP)
Application Number:
PCT/JP2022/041079
Publication Date:
May 10, 2024
Filing Date:
November 02, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H01S5/0687; H01S3/13
Domestic Patent References:
| WO2019208575A1 | 2019-10-31 |
Foreign References:
| JP2001284711A | 2001-10-12 | |||
| JP2018190778A | 2018-11-29 | |||
| JP2002202190A | 2002-07-19 | |||
| JP2000223761A | 2000-08-11 | |||
| JP2010153926A | 2010-07-08 | |||
| JPH0582882A | 1993-04-02 | |||
| US20030108072A1 | 2003-06-12 |
Attorney, Agent or Firm:
TAKADA, TAKAHASHI & PARTNERS (JP)
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