Mode-locked laser

Details Mode-locked laser Mode-locked laser

2011-08-23

2011-08-23

Rodriguez, Armando (Department: 2828)

Coherent light generators

Particular beam control device

Mode locking

C372S094000

Reexamination Certificate

active

08005122

ABSTRACT:
A mode-locked laser includes a two-electrode semiconductor laser (3) including a saturable absorber section (31) and gain section (32), and an optical waveguide (4) formed outside the gain section (32) of the two-electrode semiconductor laser. The optical waveguide (4) includes a ring resonator (43) having a resonator length which is an integral fraction of the total resonator length of the mode-locked laser, another ring resonator (44) having bandpass filter characteristics whose bandwidth is narrower than a gain bandwidth, and a reflective surface (46) which reflects, toward the two-electrode semiconductor laser (3), a laser beam having arrived from the two-electrode semiconductor laser (3) via the first and second ring resonators.

REFERENCES:
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patent: 2005-327881 (2005-11-01), None
patent: 2006-278770 (2006-10-01), None
patent: 2005/096462 (2005-10-01), None
International Search Report for PCT/JP2008/069444, mailed Nov. 18, 2008.
S. Matsuo et al.,“Widely Tunable Laser Using Microring Resonator”, Semiconductor Laser Conference Digest, IEEE 20th International, 2006, pp. 21-22.
M. Takahashi et al., “Tunable Laser Based on Silica Waveguide Ring Resonator”, 2007 Optical Fiber Communication and the National Fiber Optic Engineers Conference, OFC/NFOEC, Mar. 25, 2007, p. l-3.
M. Takahashi et al., “A Stable Widely Tunable Laser Using a Silica-Waveguide Triple-Ring Resonator”, 2005 Optical Fiber Communication Conference Technical Digest, OFC/NFOEC, No. 6, vol. 5, Mar. 6, 2005, p. 3.

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