公开(公告)号：US20240027873A1

公开(公告)日：2024-01-25

申请号：US18255737

申请日：2021-11-15

Applicant: UAB"EKSPLA"

Inventor： Romaldas ANTANAVICIUS ,  Mikhail GRISHIN ,  Andrejus MICHAILOVAS

IPC: G02F1/39 ,  G01J3/10 ,  H01S3/23 ,  H01S3/094 ,  G02F1/35 ,  H01S3/16 ,  H01S3/1106

CPC classification number: G02F1/392 ,  G01J3/108 ,  H01S3/235 ,  H01S3/094076 ,  G02F1/3526 ,  G02F1/3503 ,  H01S3/1611 ,  H01S3/1106 ,  G02F1/3507 ,  H01S3/1673 ,  H01S3/1643 ,  G02F1/3551

Abstract: Wavelength-tunable source of pulsed laser radiation for VIS-NIR spectroscopy which consists of a pump source (1) forming bursts of picosecond pulses of high pulse repetition rate, and a synchronously pumped optical parametric oscillator (2). The pump source (1) comprises a solid-state regenerative amplifier (31) having one or two electro-optical switches (32,33) inside its resonator (44). The switches create partial transmission of the resonator for a time interval longer than a resonator roundtrip time, and eject a part of energy of a pulse circulating inside. Bursts of 5-10 ns duration are formed, which are filled with high peak power picosecond pulses. Pulse repetition rate of the order of GHz of pump pulses allows the construction of a compact optical parametric oscillator. The whole set of parameters ensures high energy efficiency, stability and an ability to provide output pulse bursts repeating at up to 10 kHz repetition rate.