(19)
(11) EP 4 566 135 A1

(12)

(43) Date of publication:
11.06.2025 Bulletin 2025/24

(21) Application number: 23761987.9

(22) Date of filing: 31.07.2023
(51) International Patent Classification (IPC): 
H01S 5/34(2006.01)
H01S 5/14(2006.01)
 H01S 5/02(2006.01)
H01S 5/343(2006.01)
(52) Cooperative Patent Classification (CPC):
H01S 5/021; H01S 5/3401; H01S 5/141; H01S 5/04257; H01S 5/34393; H01S 5/3407
(86) International application number:
PCT/IB2023/057753
(87) International publication number:
WO 2024/028745 (08.02.2024 Gazette 2024/06)
(84) 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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
KH MA MD TN

(30) Priority: 02.08.2022 IT 202200016356

(71) Applicant: PJFC Semiconductors Societa' A Responsabilita' Limitata Semplificata
46043 Castiglione Delle Stiviere (IT)

(72) Inventor:
  • ROSSI, Lodovico
    46043 CASTIGLIONE DELLE STIVIERE (IT)

(74) Representative: Modiano, Micaela Nadia et al
Modiano & Partners Via Meravigli, 16
20123 Milano
20123 Milano (IT)

   


(54) SEMICONDUCTOR OPTICAL AMPLIFIER FOR LASER DEVICES, PARTICULARLY OF THE QUANTUM CASCADE TYPE, AND LASER DEVICE COMPRISING SAID OPTICAL AMPLIFIER