Application of V3+:YAG crystals for Q-switching and mode-locking of 1.3-um diode-pumped neodymium lasers

Jan Karol Jabczynski; Krzysztof Kopczynski; Zygmunt Mierczyk; Antoniangelo Agnesi; Annalisa Guandalini; Giancarlo C. Reali

doi:10.1117/1.1418716

1 December 2001 Application of V3+:YAG crystals for Q-switching and mode-locking of 1.3-um diode-pumped neodymium lasers

Jan Karol Jabczynski, Krzysztof Kopczynski, Zygmunt Mierczyk, Antoniangelo Agnesi, Annalisa Guandalini, Giancarlo C. Reali

Author Affiliations +

Optical Engineering, Vol. 40, Issue 12, (December 2001). https://doi.org/10.1117/1.1418716

High-power passive Q-switching and mode-locking operation regimes of diode end-pumped Nd:YAG, Nd:YVO4, and Nd:YAP active media, operating at a 1.34-?m wavelength are investigated with V3+:YAG crystal as the saturable absorber. The highest average power of 2.1 W results from a Nd:YVO4 crystal placed in a 70-mm-long linear cavity. The corresponding pulse peak power and width are 0.1 kW and 133 ns, respectively. Employing a Nd:YAP crystal and 35-mm cavity length, the highest peak power of ~2.8 kW results when the laser runs at a 6.5-kHz repetition rate for an average power of â€”0.4 W. A record of 79-xJ pulse energy results from a 64-mm-long resonator with Nd:YAG gain media, however, for a decreased average power of ~0.24 W and pulses of 40-ns width. The mode-locking operation regime is investigated in a Z-type cavity. The best results, namely, ~0.5 W average power with mode-locked envelope energy in excess of 30 ?J and mode- locked pulse energy of 0.7 ?J, are obtained from the Nd:YVO4 media. Trains of 1-?s-wide pulses with improved stability result from a 1.5-m- long designed cavity with KTP crystal applied for passive negative feedback. A numerical modeling that takes into account the short recovery time of V3+:YAG saturable absorber (~5 ns) and excited state absorption effect is used to analyze and obtain general rules for optimizing such lasers.

©(2001) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Jan Karol Jabczynski, Krzysztof Kopczynski, Zygmunt Mierczyk, Antoniangelo Agnesi, Annalisa Guandalini, and Giancarlo C. Reali "Application of V3+:YAG crystals for Q-switching and mode-locking of 1.3-um diode-pumped neodymium lasers," Optical Engineering 40(12), (1 December 2001). https://doi.org/10.1117/1.1418716

Published: 1 December 2001

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