Patent · US Active

Pulsed laser system with saturable absorber

US8774237B2 · kind B2 · utility

17Cited by

4References

5Claims

0Family size

Assignee

IPG PHOTONICS CORPORATION · US

Inventors

Sergey Maryashin · Burbach, DE
Andrey Unt · Burbach, DE

Key dates

Filing date	Aug 23, 2012
Grant date	Jul 8, 2014
Priority date	—
Expiry date	Aug 23, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH01S5/5027
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A high power pulsed laser system is configured with at least two gain blocks and with at least one saturable absorber (SA) coupled to the output and input of the respective gain blocks. The SA is configured so that Qsat_sa<Qsat_gb, wherein Qsat_sa is a saturation energy of the SA, and Qsat_gb is a saturation energy of the gain blocks. The SA is further configured with a recovery time τ<1/f providing for the substantially closed state of the SA, wherein the f is a pulse repetition rate, and with the recovery time τ smaller than a round trip time Tround_trip=2*(L1+L2)*n/c, where L1, L2—lengths of the respective gains gain blocks, n—a refractive index of active media, c—a speed of light in vacuum.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.