Zobrazeno 1 - 10
of 246
pro vyhledávání: '"A. E. Siegman"'
Autor:
John Ballato, Michael Bass, Vikas Sudesh, Timothy S. McComb, Martin Richardson, Ying Chen, Anthony E. Siegman
Publikováno v:
Applied Physics B. 90:369-372
Single mode laser action in a diode-pumped gain-guided, index- antiguided Nd3+-doped phosphate glass fiber having a 200-μm-diameter core is demonstrated. Near-Gaussian beam quality was maintained, even when pumped up to four times the threshold pump
Publikováno v:
Journal of Physics A: Mathematical and General. 36:7027-7047
The conventional Fourier transform has a well-known uncertainty relation that is defined in terms of the first and second moments of both a function and its Fourier transform. It is also well known that Gaussian functions, when translated to an arbit
Autor:
Anthony E. Siegman
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 6:1389-1399
This paper describes the continuing advances in laser resonators and optical beam propagation that emerged in the decades following the 1960s, growing out of the fundamental concepts from that era reviewed in an earlier paper. It also presents a brie
Autor:
Anthony E. Siegman
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 6:1380-1388
This paper looks back at how the basic concepts related to optical resonators and lensguides emerged during the first decade of the laser era.
Publikováno v:
IEEE Journal of Quantum Electronics. 33:219-230
We present characterization and analysis of wide-stripe unstable resonator semiconductor lasers with reactive-ion-etched facets. The mirror facets have RMS roughnesses of only 3-5 mm. Laser beam quality and brightness performance are measured in term
Publikováno v:
Physical Review Letters. 77:627-630
Several authors have predicted a substantial excess noise factor ${K}_{p}$ multiplying the quantum-limited Schawlow-Townes linewidth for laser oscillators having nonorthogonal spatial modes, such as unstable-resonator lasers. Experimental observation
Autor:
Anthony E. Siegman, Yan Sun
Publikováno v:
IEEE Journal of Quantum Electronics. 32:790-795
We describe the mode properties of offset gain and index guided structures in which gain and index guiding effects are simultaneously present and oriented in parallel but laterally offset. Such structures can occur in semiconductor lasers, integrated
Autor:
Joon Chung, Anthony E. Siegman
Publikováno v:
IEEE Journal of Quantum Electronics. 31:582-590
We discuss the potential use of three new mode-locking techniques, namely additive-pulse mode locking, the combination of self-phase modulation and group velocity dispersion, and Kerr lens mode locking, as simple retrofits to enhance the performance
Autor:
Anthony E. Siegman
Publikováno v:
Applied Physics B Laser and Optics. 60:247-257
Expanding the fields of a laser cavity in a set of orthonormal modes is a standard technique in laser theory. Expansion in a normal mode set is also the basis of the concept of “photons”. A substantial number of practical lasers do not, however,
Publikováno v:
IEEE Journal of Quantum Electronics. 31:391-398
Measuring the relaxation oscillation frequency /spl omega//sub r/ versus the normalized pumping rate r can provide a useful technique for determining either cavity or atomic parameters in many different kinds of lasers. Measurements of relaxation fre