Tuning of the emission frequency of a dye laser with a Bragg mirror in the form of a cholesteric liquid crystal

Ilchishin, Igor P.; Tikhonov, E. A.; Tishchenko, V. G.; Shpak, M. T.

doi:10.1070/qe1978v008n12abeh011397

Cited by 47 publications

(40 citation statements)

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“…The field of liquid crystal lasers has its foundations in the 1970s when the first reports on lasing appeared [20,21]. The sources developed can be categorized in two main groups: bandedge lasers and defect-mode lasers.…”

Section: Laser and Photonics Reviews C Grivas And M Pollnau: Organic mentioning

confidence: 99%

Organic solid‐state integrated amplifiers and lasers

Grivas

Pollnau

2012

Laser & Photonics Reviews

209

202

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Solid-state organic amplifiers and lasers are attractive for hybrid integration due to their compatibility with different material platforms, straightforward processing, and possibility to optimize easily their optical and electronic properties by molecular engineering. Advances in the gain medium design and synthesis in combination with new resonator architectures led to tremendous improvements in temporal and spectral properties, lifetime stability, gains produced and operating threshold powers, which triggered interest in their use for a broad range of integrated photonic applications. In this contribution, the current state-of-the-art in the field of organic solid-state amplifiers and lasers is reviewed from the aspects of fabrication technology, gain materials, and device performance. Furthermore, examples of the progress of this technology from a laboratory curiosity to one that demonstrates practical integrated photonic applications are highlighted. An outlook is also provided on research areas and applications that are likely to shape further developments of this technology. (Figure reprinted from [296],

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Section: Laser and Photonics Reviews C Grivas And M Pollnau: Organic mentioning

confidence: 99%

Organic solid‐state integrated amplifiers and lasers

Grivas

Pollnau

2012

Laser & Photonics Reviews

209

202

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“…As a consequence, the fluorescent emission in these materials is suppressed in the reflection band and is enhanced at the band edges. This gain enhancement and distributed feedback effect can give rise to low threshold mirrorless lasing at the band edge in a variety of liquid crystal materials [2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Lasing Thresholds of Cholesteric Liquid Crystals Lasers

Cao

Palffy‐Muhoray

Taheri

et al. 2005

Molecular Crystals and Liquid Crystals

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Cholesteric liquid crystals (CLCs) are one dimensional photonic band-gap materials. Due to distributed feedback, low threshold mirrorless lasing can occur in dye-doped and pure CLCs. In order to optimize the lasing conditions, we have studied the dependence of the lasing threshold on dye concentration and sample thickness. In particular, we have studied dye concentrations in the range of 0.1-3.0wt%, and cell thicknesses are in the range of 5-50µm. We have found that the system has a shallow lasing threshold minimum and can operate efficiently in the range of dye concentrations of 0.3-2.4wt% and sample thicknesses of 10-50µm. We discuss the physical processes responsible for the observed behaviour.

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“…Studies of the stability of supramolecular structures of CLCs in the field of nanosecond laser pulses and the performance of CLC laser mirrors were the first step in the creation of a CLC laser [72]. In these experiments, CLCs based on a mixture of cholesterol esters with a linear temperature dependence of the helical pitch at a response rate § 3 nm/grad were used.…”

Section: Cholesteric Liquid Crystalmentioning

confidence: 99%