Abstract

We analyze a mechanism of direct laser writing of microlenses. We find that thermal effects and photochemical reactions are responsible for microlens formation on a sensitized gelatin layer. An infrared camera was used to assess the temperature distribution during the microlens formation, while the diffraction pattern produced by the microlens itself was used to estimate optical properties. The study of thermal processes enabled us to establish the correlation between thermal and optical parameters.

© 2009 Optical Society of America

Properties of microlenses produced on a layer of tot'hema and eosin sensitized gelatin

Branka D. Murić, Dejan V. Pantelić, Darko M. Vasiljević, and Bratimir M. Panić
Appl. Opt. 46(35) 8527-8532 (2007)

Hologram formation with red light in methylene blue sensitized dichromated gelatin

T. Kubota, T. Ose, M. Sasaki, and K. Honda
Appl. Opt. 15(2) 556-558 (1976)

Arbitrary shaped microlens array laser sintered on glass sheets

Changyi Lai and Vitor M. Schneider
Appl. Opt. 48(35) 6621-6626 (2009)

Hexagonal microlens array fabricated by direct laser writing and inductively coupled plasma etching on organic light emitting devices to enhance the outcoupling efficiency

Dengfeng Kuang, Xiaoliang Zhang, Min Gui, and Zhiliang Fang
Appl. Opt. 48(5) 974-978 (2009)

Mechanism of Hologram Formation in Dichromated Gelatin with X-Ray Photoelectron Spectroscopy

Xiong Liang-wen, Liu Shihong, and Peng Bi-xian
Appl. Opt. 37(17) 3678-3684 (1998)