Observation of the laser-induced surface dynamics by the single-shot x-ray laser interferometer

Noboru Hasegawa; Yoshihiro Ochi; Tetsuya Kawachi; Masaharu Nishikino; Masahiko Ishino; Takashi Imazono; Takeshi Kaihori; Akira Sasaki; Kota Terakawa; Yasuo Minami; Takuro Tomita; Minoru Yamamoto; Yoshifumi Umeda; Mitsuru Yamagiwa; Tohru Suemoto

doi:10.1117/12.893442

5 October 2011 Observation of the laser-induced surface dynamics by the single-shot x-ray laser interferometer

Noboru Hasegawa, Yoshihiro Ochi, Tetsuya Kawachi, Masaharu Nishikino, Masahiko Ishino, Takashi Imazono, Takeshi Kaihori, Akira Sasaki, Kota Terakawa, Yasuo Minami, Takuro Tomita, Minoru Yamamoto, Yoshifumi Umeda, Mitsuru Yamagiwa, Tohru Suemoto

Author Affiliations +

Proceedings Volume 8140, X-ray Lasers and Coherent X-ray Sources: Development and Applications IX; 81400G (2011) https://doi.org/10.1117/12.893442
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

We have developed a soft x-ray laser (SXRL) interferometer capable of the single-shot imaging of nano-scaled structure dynamics. The interferometer consisted of the reflection optics including double Lloyd's mirrors and focusing optics, and the interference fringes are produced on the detector surface. The depth and lateral resolutions of the interferometer were about 1 nm and 1.8 μm, respectively. By using this interferometer, the initial stage (~50 ps) of the ablation process of the Pt surface pumped by a 70 fs Ti:Sapphire laser pulse was observed. The expansion speed of the surface estimated from the result (34 nm/50 ps) indicated that the nano-bubble structures were formed in the initial stage of the ablation. In order to observe the detailed dynamics, the temporal synchronization between the pump and probe pulses was improved to be 3 ps by adopting a portion of the SXRL and pump beams as the time fiducials, to which the pump and probe timing was adjusted by using the x-ray streak camera.

Citation Download Citation

Noboru Hasegawa, Yoshihiro Ochi, Tetsuya Kawachi, Masaharu Nishikino, Masahiko Ishino, Takashi Imazono, Takeshi Kaihori, Akira Sasaki, Kota Terakawa, Yasuo Minami, Takuro Tomita, Minoru Yamamoto, Yoshifumi Umeda, Mitsuru Yamagiwa, and Tohru Suemoto "Observation of the laser-induced surface dynamics by the single-shot x-ray laser interferometer", Proc. SPIE 8140, X-ray Lasers and Coherent X-ray Sources: Development and Applications IX, 81400G (5 October 2011); https://doi.org/10.1117/12.893442

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