EP2803120 - SINGLE MODE SINGLE FREQUENCY LASER SYSTEM WITH HARMONIC GENERATION [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 18.03.2022 Database last updated on 22.01.2025 | |
Former | The patent has been granted Status updated on 09.04.2021 | ||
Former | Grant of patent is intended Status updated on 08.12.2020 | ||
Former | Examination is in progress Status updated on 16.07.2019 | Most recent event Tooltip | 06.09.2024 | Lapse of the patent in a contracting state New state(s): MT | published on 09.10.2024 [2024/41] | Applicant(s) | For all designated states IPG Photonics Corporation 50 Old Webster Road Oxford, Massachusetts 01540 / US | [2014/47] | Inventor(s) | 01 /
GAPONTSEV, Valentin 31 Hickory Drive Worchester, MA 01609 / US | 02 /
AVDOKHIN, Alexey 1731 Beacon St. Unit 1513 Brooklin, MA 02445 / US | 03 /
ANDRUSYAK, Oleksiy 106 Tremont Street Apt. 206 Boston, MA 02135 / US | 04 /
GRAPOV, Yuri 71 School Road Sutton, MA 01590 / US | [2021/19] |
Former [2014/47] | 01 /
GAPONTSEV, Valentin 31 Hickory Drive Worchester, MA 01609 / US | ||
02 /
AVDOKHIN, Alexey 1731 Beacon St. Unit 1513 Brooklin, MA 02445 / US | |||
03 /
GAPONTSEV, Valentin 31 Hickory Drive Worchester, MA 01609 / US | |||
04 /
ANDRUSYAK, Oleksiy 106 Tremont Street Apt. 206 Boston, MA 02135 / US | |||
05 /
GRAPOV, Yuri 71 School Road Sutton, MA 01590 / US | Representative(s) | Kohlmann, Kai Donatusstraße 1 52078 Aachen / DE | [2014/47] | Application number, filing date | 13736101.0 | 09.01.2013 | [2021/19] | WO2013US20866 | Priority number, date | US201261584395P | 09.01.2012 Original published format: US 201261584395 P | [2014/47] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | WO2013106456 | Date: | 18.07.2013 | Language: | EN | [2013/29] | Type: | A1 Application with search report | No.: | EP2803120 | Date: | 19.11.2014 | Language: | EN | The application published by WIPO in one of the EPO official languages on 18.07.2013 takes the place of the publication of the European patent application. | [2014/47] | Type: | B1 Patent specification | No.: | EP2803120 | Date: | 12.05.2021 | Language: | EN | [2021/19] | Search report(s) | International search report - published on: | KR | 18.07.2013 | (Supplementary) European search report - dispatched on: | EP | 15.04.2016 | Classification | IPC: | G02F1/35, H01S3/067, H01S3/00, H01S3/10, H01S3/13, H01S3/109, H01S3/23, H01S5/0687 | [2020/48] | CPC: |
H01S3/0092 (EP,US);
G02F1/353 (EP);
H01S3/109 (EP);
H01S3/1301 (EP,US);
H01S3/1305 (EP);
H01S3/2308 (EP);
H01S5/0687 (EP);
H01S3/0085 (EP);
H01S3/06758 (EP);
H01S3/10015 (EP)
(-)
|
Former IPC [2016/19] | H01S3/098, H01S3/10, H01S3/109, H01S3/23, H01S5/0687, H01S3/13 | ||
Former IPC [2014/47] | H01S3/098, H01S3/10 | Designated contracting states | AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR [2014/47] | Extension states | BA | Not yet paid | ME | Not yet paid | Title | German: | MONOMODALES MONOFREQUENTES LASERSYSTEM MIT OBERWELLENERZEUGUNG | [2014/47] | English: | SINGLE MODE SINGLE FREQUENCY LASER SYSTEM WITH HARMONIC GENERATION | [2014/47] | French: | SYSTÈME LASER MONOMODE, MONOFRÉQUENCE À GÉNÉRATION D'HARMONIQUES | [2014/47] | Entry into regional phase | 08.07.2014 | National basic fee paid | 08.07.2014 | Search fee paid | 08.07.2014 | Designation fee(s) paid | 08.07.2014 | Examination fee paid | Examination procedure | 08.07.2014 | Examination requested [2014/47] | 08.11.2016 | Amendment by applicant (claims and/or description) | 19.07.2019 | Despatch of a communication from the examining division (Time limit: M02) | 06.09.2019 | Reply to a communication from the examining division | 09.12.2020 | Communication of intention to grant the patent | 31.03.2021 | Fee for grant paid | 31.03.2021 | Fee for publishing/printing paid | 31.03.2021 | Receipt of the translation of the claim(s) | Divisional application(s) | The date of the Examining Division's first communication in respect of the earliest application for which a communication has been issued is 19.07.2019 | Opposition(s) | 15.02.2022 | No opposition filed within time limit [2022/16] | Fees paid | Renewal fee | 06.11.2014 | Renewal fee patent year 03 | 11.01.2016 | Renewal fee patent year 04 | 11.01.2017 | Renewal fee patent year 05 | 15.01.2018 | Renewal fee patent year 06 | 15.01.2019 | Renewal fee patent year 07 | 14.01.2020 | Renewal fee patent year 08 | 13.01.2021 | Renewal fee patent year 09 |
Opt-out from the exclusive Tooltip competence of the Unified Patent Court | See the Register of the Unified Patent Court for opt-out data | ||
Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court. | Lapses during opposition Tooltip | HU | 09.01.2013 | AL | 12.05.2021 | AT | 12.05.2021 | CY | 12.05.2021 | CZ | 12.05.2021 | DK | 12.05.2021 | EE | 12.05.2021 | ES | 12.05.2021 | FI | 12.05.2021 | HR | 12.05.2021 | IT | 12.05.2021 | LT | 12.05.2021 | LV | 12.05.2021 | MC | 12.05.2021 | MK | 12.05.2021 | MT | 12.05.2021 | NL | 12.05.2021 | PL | 12.05.2021 | RO | 12.05.2021 | RS | 12.05.2021 | SE | 12.05.2021 | SI | 12.05.2021 | SK | 12.05.2021 | SM | 12.05.2021 | TR | 12.05.2021 | BG | 12.08.2021 | NO | 12.08.2021 | GR | 13.08.2021 | IS | 12.09.2021 | PT | 13.09.2021 | IE | 09.01.2022 | LU | 09.01.2022 | BE | 31.01.2022 | [2024/41] |
Former [2024/29] | HU | 09.01.2013 | |
AL | 12.05.2021 | ||
AT | 12.05.2021 | ||
CY | 12.05.2021 | ||
CZ | 12.05.2021 | ||
DK | 12.05.2021 | ||
EE | 12.05.2021 | ||
ES | 12.05.2021 | ||
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
IT | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
MC | 12.05.2021 | ||
MK | 12.05.2021 | ||
NL | 12.05.2021 | ||
PL | 12.05.2021 | ||
RO | 12.05.2021 | ||
RS | 12.05.2021 | ||
SE | 12.05.2021 | ||
SI | 12.05.2021 | ||
SK | 12.05.2021 | ||
SM | 12.05.2021 | ||
TR | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
IS | 12.09.2021 | ||
PT | 13.09.2021 | ||
IE | 09.01.2022 | ||
LU | 09.01.2022 | ||
BE | 31.01.2022 | ||
Former [2024/22] | HU | 09.01.2013 | |
AL | 12.05.2021 | ||
AT | 12.05.2021 | ||
CY | 12.05.2021 | ||
CZ | 12.05.2021 | ||
DK | 12.05.2021 | ||
EE | 12.05.2021 | ||
ES | 12.05.2021 | ||
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
IT | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
MC | 12.05.2021 | ||
MK | 12.05.2021 | ||
NL | 12.05.2021 | ||
PL | 12.05.2021 | ||
RO | 12.05.2021 | ||
RS | 12.05.2021 | ||
SE | 12.05.2021 | ||
SI | 12.05.2021 | ||
SK | 12.05.2021 | ||
SM | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
IS | 12.09.2021 | ||
PT | 13.09.2021 | ||
IE | 09.01.2022 | ||
LU | 09.01.2022 | ||
BE | 31.01.2022 | ||
Former [2024/20] | HU | 09.01.2013 | |
AL | 12.05.2021 | ||
AT | 12.05.2021 | ||
CY | 12.05.2021 | ||
CZ | 12.05.2021 | ||
DK | 12.05.2021 | ||
EE | 12.05.2021 | ||
ES | 12.05.2021 | ||
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
IT | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
MC | 12.05.2021 | ||
NL | 12.05.2021 | ||
PL | 12.05.2021 | ||
RO | 12.05.2021 | ||
RS | 12.05.2021 | ||
SE | 12.05.2021 | ||
SI | 12.05.2021 | ||
SK | 12.05.2021 | ||
SM | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
IS | 12.09.2021 | ||
PT | 13.09.2021 | ||
IE | 09.01.2022 | ||
LU | 09.01.2022 | ||
BE | 31.01.2022 | ||
Former [2024/18] | HU | 09.01.2013 | |
AL | 12.05.2021 | ||
AT | 12.05.2021 | ||
CZ | 12.05.2021 | ||
DK | 12.05.2021 | ||
EE | 12.05.2021 | ||
ES | 12.05.2021 | ||
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
IT | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
MC | 12.05.2021 | ||
NL | 12.05.2021 | ||
PL | 12.05.2021 | ||
RO | 12.05.2021 | ||
RS | 12.05.2021 | ||
SE | 12.05.2021 | ||
SI | 12.05.2021 | ||
SK | 12.05.2021 | ||
SM | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
IS | 12.09.2021 | ||
PT | 13.09.2021 | ||
IE | 09.01.2022 | ||
LU | 09.01.2022 | ||
BE | 31.01.2022 | ||
Former [2023/09] | AL | 12.05.2021 | |
AT | 12.05.2021 | ||
CZ | 12.05.2021 | ||
DK | 12.05.2021 | ||
EE | 12.05.2021 | ||
ES | 12.05.2021 | ||
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
IT | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
MC | 12.05.2021 | ||
NL | 12.05.2021 | ||
PL | 12.05.2021 | ||
RO | 12.05.2021 | ||
RS | 12.05.2021 | ||
SE | 12.05.2021 | ||
SI | 12.05.2021 | ||
SK | 12.05.2021 | ||
SM | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
IS | 12.09.2021 | ||
PT | 13.09.2021 | ||
IE | 09.01.2022 | ||
LU | 09.01.2022 | ||
BE | 31.01.2022 | ||
Former [2023/01] | AL | 12.05.2021 | |
AT | 12.05.2021 | ||
CZ | 12.05.2021 | ||
DK | 12.05.2021 | ||
EE | 12.05.2021 | ||
ES | 12.05.2021 | ||
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
IT | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
MC | 12.05.2021 | ||
NL | 12.05.2021 | ||
PL | 12.05.2021 | ||
RO | 12.05.2021 | ||
RS | 12.05.2021 | ||
SE | 12.05.2021 | ||
SI | 12.05.2021 | ||
SK | 12.05.2021 | ||
SM | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
IS | 12.09.2021 | ||
PT | 13.09.2021 | ||
LU | 09.01.2022 | ||
BE | 31.01.2022 | ||
Former [2022/46] | AL | 12.05.2021 | |
AT | 12.05.2021 | ||
CZ | 12.05.2021 | ||
DK | 12.05.2021 | ||
EE | 12.05.2021 | ||
ES | 12.05.2021 | ||
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
IT | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
MC | 12.05.2021 | ||
NL | 12.05.2021 | ||
PL | 12.05.2021 | ||
RO | 12.05.2021 | ||
RS | 12.05.2021 | ||
SE | 12.05.2021 | ||
SI | 12.05.2021 | ||
SK | 12.05.2021 | ||
SM | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
IS | 12.09.2021 | ||
PT | 13.09.2021 | ||
LU | 09.01.2022 | ||
Former [2022/39] | AL | 12.05.2021 | |
AT | 12.05.2021 | ||
CZ | 12.05.2021 | ||
DK | 12.05.2021 | ||
EE | 12.05.2021 | ||
ES | 12.05.2021 | ||
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
IT | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
MC | 12.05.2021 | ||
NL | 12.05.2021 | ||
PL | 12.05.2021 | ||
RO | 12.05.2021 | ||
RS | 12.05.2021 | ||
SE | 12.05.2021 | ||
SI | 12.05.2021 | ||
SK | 12.05.2021 | ||
SM | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
IS | 12.09.2021 | ||
PT | 13.09.2021 | ||
Former [2022/36] | AL | 12.05.2021 | |
AT | 12.05.2021 | ||
CZ | 12.05.2021 | ||
DK | 12.05.2021 | ||
EE | 12.05.2021 | ||
ES | 12.05.2021 | ||
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
IT | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
NL | 12.05.2021 | ||
PL | 12.05.2021 | ||
RO | 12.05.2021 | ||
RS | 12.05.2021 | ||
SE | 12.05.2021 | ||
SI | 12.05.2021 | ||
SK | 12.05.2021 | ||
SM | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
IS | 12.09.2021 | ||
PT | 13.09.2021 | ||
Former [2022/29] | AL | 12.05.2021 | |
AT | 12.05.2021 | ||
CZ | 12.05.2021 | ||
DK | 12.05.2021 | ||
EE | 12.05.2021 | ||
ES | 12.05.2021 | ||
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
NL | 12.05.2021 | ||
PL | 12.05.2021 | ||
RO | 12.05.2021 | ||
RS | 12.05.2021 | ||
SE | 12.05.2021 | ||
SI | 12.05.2021 | ||
SK | 12.05.2021 | ||
SM | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
IS | 12.09.2021 | ||
PT | 13.09.2021 | ||
Former [2022/26] | AL | 12.05.2021 | |
AT | 12.05.2021 | ||
CZ | 12.05.2021 | ||
DK | 12.05.2021 | ||
EE | 12.05.2021 | ||
ES | 12.05.2021 | ||
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
NL | 12.05.2021 | ||
PL | 12.05.2021 | ||
RO | 12.05.2021 | ||
RS | 12.05.2021 | ||
SE | 12.05.2021 | ||
SK | 12.05.2021 | ||
SM | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
IS | 12.09.2021 | ||
PT | 13.09.2021 | ||
Former [2022/23] | AT | 12.05.2021 | |
CZ | 12.05.2021 | ||
DK | 12.05.2021 | ||
EE | 12.05.2021 | ||
ES | 12.05.2021 | ||
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
NL | 12.05.2021 | ||
PL | 12.05.2021 | ||
RO | 12.05.2021 | ||
RS | 12.05.2021 | ||
SE | 12.05.2021 | ||
SK | 12.05.2021 | ||
SM | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
IS | 12.09.2021 | ||
PT | 13.09.2021 | ||
Former [2022/10] | AT | 12.05.2021 | |
CZ | 12.05.2021 | ||
DK | 12.05.2021 | ||
EE | 12.05.2021 | ||
ES | 12.05.2021 | ||
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
NL | 12.05.2021 | ||
PL | 12.05.2021 | ||
RO | 12.05.2021 | ||
RS | 12.05.2021 | ||
SE | 12.05.2021 | ||
SK | 12.05.2021 | ||
SM | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
PT | 13.09.2021 | ||
IS | 22.12.2021 | ||
Former [2022/09] | AT | 12.05.2021 | |
CZ | 12.05.2021 | ||
DK | 12.05.2021 | ||
ES | 12.05.2021 | ||
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
NL | 12.05.2021 | ||
PL | 12.05.2021 | ||
RO | 12.05.2021 | ||
RS | 12.05.2021 | ||
SE | 12.05.2021 | ||
SK | 12.05.2021 | ||
SM | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
IS | 12.09.2021 | ||
PT | 13.09.2021 | ||
Former [2022/08] | AT | 12.05.2021 | |
CZ | 12.05.2021 | ||
DK | 12.05.2021 | ||
ES | 12.05.2021 | ||
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
NL | 12.05.2021 | ||
PL | 12.05.2021 | ||
RS | 12.05.2021 | ||
SE | 12.05.2021 | ||
SM | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
IS | 12.09.2021 | ||
PT | 13.09.2021 | ||
Former [2022/07] | AT | 12.05.2021 | |
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
NL | 12.05.2021 | ||
PL | 12.05.2021 | ||
RS | 12.05.2021 | ||
SE | 12.05.2021 | ||
SM | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
IS | 12.09.2021 | ||
PT | 13.09.2021 | ||
Former [2022/04] | AT | 12.05.2021 | |
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
NL | 12.05.2021 | ||
PL | 12.05.2021 | ||
RS | 12.05.2021 | ||
SE | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
IS | 12.09.2021 | ||
PT | 13.09.2021 | ||
Former [2021/52] | AT | 12.05.2021 | |
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
PL | 12.05.2021 | ||
RS | 12.05.2021 | ||
SE | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
IS | 12.09.2021 | ||
PT | 13.09.2021 | ||
Former [2021/51] | AT | 12.05.2021 | |
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
RS | 12.05.2021 | ||
SE | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
IS | 12.09.2021 | ||
PT | 13.09.2021 | ||
Former [2021/50] | AT | 12.05.2021 | |
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
SE | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
PT | 13.09.2021 | ||
Former [2021/49] | AT | 12.05.2021 | |
FI | 12.05.2021 | ||
HR | 12.05.2021 | ||
LT | 12.05.2021 | ||
LV | 12.05.2021 | ||
SE | 12.05.2021 | ||
BG | 12.08.2021 | ||
NO | 12.08.2021 | ||
GR | 13.08.2021 | ||
Former [2021/47] | AT | 12.05.2021 | |
FI | 12.05.2021 | ||
LT | 12.05.2021 | ||
BG | 12.08.2021 | ||
Former [2021/46] | AT | 12.05.2021 | |
FI | 12.05.2021 | ||
LT | 12.05.2021 | Documents cited: | Search | [A]US2011026102 (STARODUBOV DMITRY [US], et al) [A] 1-13 * paragraph [0023] - paragraph [0027]; figures 1,4; claims 1-3 * * the whole document *; | [A]US2009010288 (KEATON GREGORY L [US], et al) [A] 1-13 * paragraph [0067] - paragraph [0070]; figure 2 * * paragraph [0084] *; | [I]JP2002062555 (SONY CORP) [I] 1-13 * paragraph [0016] - paragraph [0022]; figure 1 * * the whole document *; | [A] - SHADDOCK D A ET AL, "Modulation-free control of a continuous-wave second-harmonic generator; Modulation-free control of a continuous-wave second-harmonic generator", JOURNAL OF OPTICS. A, PURE AND APPLIED OPTICS, INSTITUTE OF PHYSICS PUBLISHING, BRISTOL, GB, (20000901), vol. 2, no. 5, doi:10.1088/1464-4258/2/5/309, ISSN 1464-4258, pages 400 - 404, XP020080664 [A] 1-13 * § 3.;; figure 3 * * the whole document * DOI: http://dx.doi.org/10.1088/1464-4258/2/5/309 | [A] - MASAHIKO TANI ET AL, "Generation of terahertz radiation by photomixing with dual- and multiple-mode lasers; Generation of terahertz radiation by photomixing with dual- and multiple-mode lasers", SEMICONDUCTOR SCIENCE AND TECHNOLOGY, IOP PUBLISHING LTD, GB, (20050701), vol. 20, no. 7, doi:10.1088/0268-1242/20/7/005, ISSN 0268-1242, pages S151 - S163, XP020086536 [A] 1-13 * §3.2;; figure 4 * * the whole document * DOI: http://dx.doi.org/10.1088/0268-1242/20/7/005 | [T] - ERIC D. BLACK, "An introduction to Pound-Drever-Hall laser frequency stabilization", AMERICAN JOURNAL OF PHYSICS, (20010101), vol. 69, no. 1, doi:10.1119/1.1286663, ISSN 0002-9505, page 79, XP055144240 [T] 1-13 * the whole document * DOI: http://dx.doi.org/10.1119/1.1286663 | [T] - DREVER R W P ET AL, "LASER PHASE AND FREQUENCY STABILIZATION USING AN OPTICAL RESONATOR", APPLIED PHYSICS B. PHOTOPHYSICS AND CHEMISTRY, SPRINGER VERLAG. HEIDELBERG, DE, (19830601), vol. B31, no. 2, doi:10.1007/BF00702605, pages 97 - 105, XP000710689 [T] 1-13 * the whole document * DOI: http://dx.doi.org/10.1007/BF00702605 | International search | [X]JP2007003616 (SONY CORP); | [A]US2009010288 (KEATON GREGORY L [US], et al); | [A]US2009059968 (LUO NINGYI [US], et al); | [A]JPH06283786 (FUJI PHOTO FILM CO LTD); | [A]US2010166026 (KLEBANOV LEONID [US]) | Examination | US2010085632 | by applicant | JP2002062555 |