Advancing multi-wavelength liquid crystal laser microcavities in a compact prototype device using a laser diode pump source

Calum Brown, Daisy Dickinson, Philip J. W. Hands

Research output: Chapter in Book/Report/Conference proceedingConference contribution


For several decades there has been much discussion within the liquid crystal laser community that a semiconductor-based pump source would offer a significant improvement compared to the typical method of Q-switched laser pumping in terms of cost, size and commercial viability of liquid crystal lasers. By combining specialist driver electronics with a high-power 445 nm laser diode and using in-house fabricated liquid crystal laser cells, we demonstrate the first diode-pumped liquid crystal laser capable of producing linewidths ≤ 1.5 nm in the blue, green, yellow and red regions of the visible spectrum. Using the same 445 nm laser diode pump source, a spinning liquid crystal laser set-up is presented, enabling an average output power of 10 μW at a repetition rate of 20 kHz – the highest repetition rate published to-date. We also present the design of the first portable diode-pumped liquid crystal laser prototype device, with spinning and wavelength selectivity capabilities. We anticipate this improvement in pump source, repetition rate and form-factor will offer a major step forward in bringing applications of this relatively unexplored area in photonics closer to realization, such as in fluorescence microscopy and laser-based displays.
Original languageEnglish
Title of host publicationProceedings Volume 11987
Subtitle of host publicationLaser Resonators, Microresonators, and Beam Control XXIV
Publication statusPublished - 4 Mar 2022
EventSPIE Photonics West: SPIE LASE - San Francisco, United States
Duration: 22 Jan 202228 Feb 2022


ConferenceSPIE Photonics West
Country/TerritoryUnited States
CitySan Francisco


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