High repetition rate, high pulse energy fiber-solid hybrid picosecond regenerative amplifier system

Xueyan Dong; Pingxue Li; Shun Li; Tingting Wang; Dongsheng Wang

doi:10.1117/12.2575743

5 November 2020 High repetition rate, high pulse energy fiber-solid hybrid picosecond regenerative amplifier system

Xueyan Dong, Pingxue Li, Shun Li, Tingting Wang, Dongsheng Wang

Proceedings Volume 11562, AOPC 2020: Advanced Laser Technology and Application; 115620A (2020) https://doi.org/10.1117/12.2575743
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

We propose a fiber-solid hybrid amplifier system which consists of a semiconductor saturable absorber mirror (SESAM) mode-locked fiber seed with pulse width of 10.6 ps and repetition rate of 17.6 MHz, a two-stage fiber pre-amplifier and a Nd: YAG regenerative amplifier. This structure not only endures high peak power, but also reduces the influence of fiber nonlinear effects. In the regenerative amplifier, a Pockels cell made up of BBO crystal is used as the electro-optical Q switch. It can effectively amplify the fiber seed source while keeping the beam quality constant. Besides, the pulse frequency, round trip time and thermal lens effect of the regenerative amplifier are considered and the stability of the high repetition rate regenerative cavity is further improved. The system achieves average powers of 1.5, 2.5, 3.4 W at the repetition rates of 1, 3, 5 kHz, corresponding to single pulse energies of 1.5, 0.83, 0.68 mJ respectively. And the beam quality factor M₂ reaches 1.5 at the output power of 3.4 W. This system will make significant contributions to many fields such as material micro-processing, laser ranging, and laser detection. To make it more systematizing and engineering, we design an engineering prototype of the fiber-solid hybrid amplifier system.

Citation Download Citation

Xueyan Dong, Pingxue Li, Shun Li, Tingting Wang, and Dongsheng Wang "High repetition rate, high pulse energy fiber-solid hybrid picosecond regenerative amplifier system", Proc. SPIE 11562, AOPC 2020: Advanced Laser Technology and Application, 115620A (5 November 2020); https://doi.org/10.1117/12.2575743

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Fiber amplifiers

Amplifiers

Picosecond phenomena

Optical amplifiers

Fiber lasers

Mode locking

Thermal effects

Show All Keywords

Keywords/Phrases

Search In:

Publication Years