公开(公告)号：US11482834B1

公开(公告)日：2022-10-25

申请号：US17218879

申请日：2021-03-31

Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.

Inventor： Leonard A. Pomeranz ,  Scott D. Setzler ,  Jojit C. Torcedo

IPC: H01S5/04 ,  H01S5/042 ,  H01S5/50 ,  H01S5/026

Abstract: A laser system produces pulses having wavelengths between 2000 nm and 2100 nm, peak output powers greater than 1 kW, average powers greater than 10 W, pulse widths variable from 0.5 to 10 nsec, pulse repetition frequencies variable from 0.1 to over 2 MHz, and a pulse extinction of at least 60 dB. Pulses from a diode laser having a wavelength between 1000 nm and 1100 nm are amplified by at least one fiberoptic amplifier and applied as the pump input to an Optical Parametric Amplifier (OPA). A cw laser provides an OPA seed input at a wavelength between 2000 nm and 2200 nm. The idler output of the OPA having difference frequency wavelength between 2000 nm and 2100 nm is further amplified by a crystal amplifier. The fiberoptic amplifier can include Ytterbium-doped fiberoptic. The crystal amplifier can include a Ho:YAG, Ho:YLF, Ho:LuAG, and/or a Ho:Lu2O3 crystal.

公开(公告)号：US09620924B1

公开(公告)日：2017-04-11

申请号：US15016626

申请日：2016-02-05

Applicant: BAE Systems Information and Electronic Systems Integration Inc.

Inventor： Daniel J. Creeden ,  Julia R. Limongelli ,  Hermanus S. Pretorius ,  Scott D. Setzler

IPC: H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H01S3/0941

CPC classification number: H01S3/06754 ,  H01S3/094003 ,  H01S3/09403 ,  H01S3/09415 ,  H01S3/1608 ,  H01S3/1618

Abstract: The system and method for reducing Yb to Er bottlenecking in a single frequency Er:Yb-doped fiber laser amplifier. The system is pumped off peak at about 935-955 nm. The off-peak pumping reduces bottlenecking and increases the optical and slope efficiency of the system by about 10% as compared to an EYDFA system pumped on-peak.