Skip to content

Research at St Andrews

Microlensed red and violet diode lasers in an extended cavity geometry

Research output: Other contribution



AE Carruthers, TK Lake, A Shah, John Walter Allen, Wilson Sibbett, Kishan Dholakia

School/Research organisations


We examine the behavior of two microlensed diode lasers at 413 and 661 nm placed in both free-running and extended cavity geometries. The 25 mW free-running 413 nm diode shows current tuning over 40 GHz and the 50 mW, 661 nm diode shows tuning of 55 GHz. In extended cavity the 413 nm diode coarsely tunes 5 nm and finely tunes 6 GHz, with a linewidth of 4 MHz. The 661 nm diode coarsely tunes 11 nm with fine tuning of 6 GHz. Beam profile ratios for the 413 and 661 nm microlensed diodes are 1:1.06 and 1:1.10 respectively. (C) 2004 American Institute of Physics.



Original languageEnglish
Number of pages3360
Publication statusPublished - Oct 2004

    Research areas


Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. A Raman spectroscopy bio-sensor for tissue discrimination in surgical robotics.

    Ashok, P. C., Giardini, M. E., Dholakia, K. & Sibbett, W., 2013, In : Journal of Biophotonics. 7

    Research output: Contribution to journalArticle

  2. Tissue Surface as the Reference Arm in Fourier Domain Optical Coherence Tomography

    Krstajic, N., Ashok, P. C., Sibbett, W., Brown, C. T. A., Dholakia, K. & Giardini, M. E., 2012, p. BTu3A.80. 3 p.

    Research output: Contribution to conferencePaper

  3. Raman Spectroscopy Sensor for Surgical Robotics - Instrumentation and Tissue Differentiation Algorithm

    Ashok, P. C., Krstajic, N., Giardini, M. E., Dholakia, K. & Sibbett, W., 2012, p. JM3A.26. 3 p.

    Research output: Contribution to conferencePaper

  4. In-fiber common-path optical coherence tomography using a conical-tip fiber

    Tan, KM., Mazilu, M., Chow, TH., Lee, WM., Taguchi, K., Ng, BK., Sibbett, W., Herrington, C. S., Brown, C. T. A. & Dholakia, K., 16 Feb 2009, In : Optics Express. 17, 4, p. 2375-2384 10 p.

    Research output: Contribution to journalArticle

  5. Generation of multiple Bessel beams for a Biophotonics workstation

    Cizmar, T., Kollarova, V., Tsampoula, X., Gunn-Moore, F. J., Sibbett, W., Bouchal, Z. & Dholakia, K., 1 Sep 2008, In : Optics Express. 16, 18, p. 14024-14035 12 p.

    Research output: Contribution to journalArticle

ID: 240373