Modulation of frequency doubled DFB-tapered diode lasers for medical treatment

Mathias Christensen; Anders K. Hansen; Danny Noordegraaf; Ole B. Jensen; Peter M. W. Skovgaard

doi:10.1117/12.2250337

20 February 2017 Modulation of frequency doubled DFB-tapered diode lasers for medical treatment

Mathias Christensen, Anders K. Hansen, Danny Noordegraaf, Ole B. Jensen, Peter M. W. Skovgaard

Proceedings Volume 10088, Nonlinear Frequency Generation and Conversion: Materials and Devices XVI; 100881A (2017) https://doi.org/10.1117/12.2250337
Event: SPIE LASE, 2017, San Francisco, California, United States

Abstract

The use of visible lasers for medical treatments is on the rise, and together with this comes higher expectations for the laser systems. For many medical treatments, such as ophthalmology, doctors require pulse on demand operation together with a complete extinction of the light between pulses. We have demonstrated power modulation from 0.1 Hz to 10 kHz at 532 nm with a modulation depth above 97% by wavelength detuning of the laser diode. The laser diode is a 1064 nm monolithic device with a distributed feedback (DFB) laser as the master oscillator (MO), and a tapered power amplifier (PA). The MO and PA have separate electrical contacts and the modulation is achieved with wavelength tuning by adjusting the current through the MO 40 mA.

Citation Download Citation

Mathias Christensen, Anders K. Hansen, Danny Noordegraaf, Ole B. Jensen, and Peter M. W. Skovgaard "Modulation of frequency doubled DFB-tapered diode lasers for medical treatment", Proc. SPIE 10088, Nonlinear Frequency Generation and Conversion: Materials and Devices XVI, 100881A (20 February 2017); https://doi.org/10.1117/12.2250337

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