Fizeau wedge with unequal mirrors for spectral control and coupling in a linear laser oscillator-amplifier system.

We propose a new tunable linear laser oscillator-amplifier system that incorporates a Fizeau wedge with unequal mirrors as the coupler. Because of asymmetry in reflection and wedge focusing in unequal mirrors, our system acts as a highly efficient selector in the oscillator and practically eliminates reinjection of spontaneous emission in the amplifier. We studied the wedge action by developing a procedure for the calculation of reflected interference patterns at a distance from the wedge. Using this procedure we found the feedback factors for both the oscillator and the amplifier. Background emission levels of less than 1% of the peak intensity in the emitted line were experimentally obtained.

[1]  C. Reiser,et al.  Laser wavemeter with solid Fizeau wedge interferometer. , 1988, Applied optics.

[2]  K. Dasgupta,et al.  Amplified spontaneous emission in narrow-band pulsed dye laser oscillators - Theory and experiment , 1985, IEEE Journal of Quantum Electronics.

[3]  L. Fucheng,et al.  High-repetition tunable picosecond dye laser pumped by a copper bromide laser , 1991 .

[4]  Y. H. Meyer,et al.  Fringe shape with an interferential wedge , 1981 .

[5]  Margarita A. Deneva,et al.  A novel technique for a narrow line selection and wideband tuning of Ti:Al2O3 and dye lasers , 1996 .

[6]  U. Heitmann,et al.  Development of a dual-wavelength dye-laser system for the UV and its application to simultaneous multi-element detection , 1995 .

[7]  M. Nenchev.  Cavity configuration in a dye laser for dispersion on the two output beams , 1984 .

[8]  The temperature dependence of the third-order nonlinear susceptibility χ(3) of CS2 and dodecylbenzene , 1995 .

[9]  A. Kung,et al.  Amplified Spontaneous Emission Reduction by Use of Stimulated Brillouin Scattering: 2-ns Pulses from a Ti:Al(2)O(3) Amplifier chain. , 1998, Applied optics.

[10]  M. Nenchev,et al.  A two-wavelength, passively self-injection locked, CW Ti/sup 3+/:Al/sub 2/O/sub 3/ laser , 1995 .

[11]  M. Dunn,et al.  Dual wavelength dye laser incorporating distributed feedback , 1985 .

[12]  Marin N. Nenchev,et al.  Interference wedge properties relevant to laser applications: transmission and reflection of restricted light beams , 1993 .

[13]  M. Nenchev,et al.  Tuning of dye lasers with a reflecting Fizeau wedge , 1980 .

[14]  C. Svelto,et al.  Analysis of amplified spontaneous emission: some corrections to the Linford formula , 1998 .

[15]  E Stoykova,et al.  Strong optical asymmetry of an interference wedge with unequal-reflectivity mirrors and its use in unidirectional ring laser designs. , 1994, Optics letters.