Injection-locking of cavity-dumped flashlamp pumped dye lasers
Injection-locking has long been recognized as an effective method of externally controlling the spectral characteristics of a laser. This technique has been employed primarily in applications where high energy yet narrow-linewidth pulsed laser emission is required. In pulsed injection-locked systems, line-narrowing is accomplished by injecting a low energy, narrow-linewidth pulse into a high power laser oscillator. If injection occurs prior to the onset of lasing in the high power oscillator, a head-start is given to that radiation which is within the spectral band of the injected signal. If this head-start is substantial enough, lasing is initiated at the wavelength and the linewidth of the injected signal. In the work presented here, this technique was applied to a cavity-dumped coaxial flashlamp pumped dye laser in an effort to obtain nanosecond duration pulses that have both high energy and narrow linewidth. In the absence of an injected laser pulse, the cavity-dumped dye laser was capable of generating high energy (approx.60 mJ) nanosecond duration output pulses. These pulses, however, had a fixed center wavelength and were extremely broad-band (approx.6nm FWHM). Experimental investigations were performed to determine if the spectral properties of these outputs could be improved through the use of injection-locking techniques.
- Research Organization:
- Johns Hopkins Univ., Baltimore, MD (USA)
- OSTI ID:
- 5537397
- Country of Publication:
- United States
- Language:
- English
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