Abstract

This study investigates a spatially band-tunable color-cone lasing emission (CCLE) based on a dye-doped cholesteric liquid crystal with a photoisomerizable chiral dopant (IBM). Experimental results show that the lasing band of the formed CCLE of the cell with a photoinduced pitch gradient can be spatially tuned among various color regions by adjusting the pumped position of the cell. The spatially band tunability of the laser results from the UV-irradiation-induced decrease of the helical twisting power of IBM via trans→cis isomerization, accordingly shrinking the pitch of the cholesteric-liquid-crystal host. The total spatially tunable wavelength range for the laser exceeds 100 nm.

© 2010 Optical Society of America

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M.-Y. Jeong, H. Choi, and J. W. Wu, Appl. Phys. Lett. 92, 051108 (2008).
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K. Sonoyama, Y. Takanishi, K. Ishikawa, and H. Takezoe, Jpn. J. Appl. Phys. 46, L874 (2007).
[CrossRef]

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Y. Huang, Y. Zhou, and S.-T. Wu, Appl. Phys. Lett. 88, 011107 (2006).
[CrossRef]

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[CrossRef]

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[CrossRef]

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M.-Y. Jeong, H. Choi, and J. W. Wu, Appl. Phys. Lett. 92, 051108 (2008).
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A. Chanishvili, G. Chilaya, G. Petriashvili, R. Barberi, R. Bartolino, G. Cipparrone, A. Mazzulla, R. Gimenez, L. Oriol, and M. Pinol, Appl. Phys. Lett. 86, 051107 (2005).
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Fuh, Andy Y.-G.

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A. Chanishvili, G. Chilaya, G. Petriashvili, R. Barberi, R. Bartolino, G. Cipparrone, A. Mazzulla, R. Gimenez, L. Oriol, and M. Pinol, Appl. Phys. Lett. 86, 051107 (2005).
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K. Sonoyama, Y. Takanishi, K. Ishikawa, and H. Takezoe, Jpn. J. Appl. Phys. 46, L874 (2007).
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K. Sonoyama, Y. Takanishi, K. Ishikawa, and H. Takezoe, Jpn. J. Appl. Phys. 46, L874 (2007).
[CrossRef]

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K. Sonoyama, Y. Takanishi, K. Ishikawa, and H. Takezoe, Jpn. J. Appl. Phys. 46, L874 (2007).
[CrossRef]

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M.-Y. Jeong, H. Choi, and J. W. Wu, Appl. Phys. Lett. 92, 051108 (2008).
[CrossRef]

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Y. Huang, Y. Zhou, and S.-T. Wu, Appl. Phys. Lett. 88, 011107 (2006).
[CrossRef]

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Y. Huang, Y. Zhou, and S.-T. Wu, Appl. Phys. Lett. 88, 011107 (2006).
[CrossRef]

Appl. Phys. Lett. (3)

A. Chanishvili, G. Chilaya, G. Petriashvili, R. Barberi, R. Bartolino, G. Cipparrone, A. Mazzulla, R. Gimenez, L. Oriol, and M. Pinol, Appl. Phys. Lett. 86, 051107 (2005).
[CrossRef]

Y. Huang, Y. Zhou, and S.-T. Wu, Appl. Phys. Lett. 88, 011107 (2006).
[CrossRef]

M.-Y. Jeong, H. Choi, and J. W. Wu, Appl. Phys. Lett. 92, 051108 (2008).
[CrossRef]

Jpn. J. Appl. Phys. (1)

K. Sonoyama, Y. Takanishi, K. Ishikawa, and H. Takezoe, Jpn. J. Appl. Phys. 46, L874 (2007).
[CrossRef]

Opt. Express (1)

Opt. Lett. (1)

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