Stretched-pulse fiber laser

Coherent light generators – Optical fiber laser

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

372 18, 372 30, 372 25, 372 39, 372 22, 372 98, 372 31, 372700, H01S 330

Patent

active

055131948

ABSTRACT:
A fiber laser for producing high energy ultrashort laser pulses, having a positive-dispersion fiber segment and a negative-dispersion fiber segment joined in series with the positive-dispersion fiber segment to form a laser cavity. With this configuration, soliton effects of laser pulse circulation in the cavity are suppressed and widths of laser pulses circulating in the cavity undergo large variations between a maximum laser pulse width and a minimum laser pulse width during one round trip through the cavity. The fiber laser also provides means for modelocking laser radiation in the laser cavity, means for providing laser radiation gain in the laser cavity, and means for extracting laser pulses from the laser cavity. Using selected positive- and negative-dispersion fiber segments, the laser cavity exhibits a net positive group velocity dispersion, and the ratio of the maximum laser pulse width to the minimum laser pulse width attained during one round trip through the cavity is greater than 5, and preferably greater than 10. The laser cavity may be configured as a linear cavity geometry, a ring cavity geometry, a figure eight geometry, or a Sagnac loop reflector geometry, among others. Preferably the ring cavity is configured to achieve unidirectional circulation of laser pulses in the ring cavity, and with this configuration, is shown to produce laser pulses having a pulse width of less than 100 fs and a pulse energy of at least 80 pJ.

REFERENCES:
patent: 4685107 (1987-08-01), Kafka et al.
patent: 4835778 (1989-05-01), Kafka et al.
Tamura et al., "77-fs pulse generation from a stretched-pulse mode-locked all-fiber ring laser," Opt. Lett., v. 18, N. 13, Jul. 1l, 1993, pp. 1080-1082.
Tamura et al., "Femtosecond All-Fiber Ring Lasers," LEOS '93 Conf. Proc., Nov. 15-18, 1993, p. 269.
Tamura et al., "Technique for obtaining high-energy ultrashort pulses from an additive-pulse node-locked erbium-doped fiber ring laser," Opt. Lett., v. 19, N. 1, Jan. 1, 1994, pp. 46-48.
Tamura et al., "Soliton versus nonsoliton operation of fiber ring lasers," Appl. Phys. Lett., 64 (2), Jan. 10, 1994, pp. 149-151.
Fermann et al., "Generation of pulses shorter than 200 fs from a passively mode-locked Er fiber laser," Opt. Lett., v. 18, No. 1, Jan. 1, 1993, pp. 48-50.
Kafka et al., "Mode-locked erbium-doped fiber laser with soliton pulse shaping," Opt. Lett., v. 14, N. 22, Nov. 15, 1989, pp. 1269-1271.
Hofer et al., "Regenerative Nd:glass amplifier seeded with a Nd":fiber laser, Opt. Lett., v.17, N. 11, Jun. 1, 1992, pp. 807-809.
Haus et al., "Additive-Pulse Modelocking in Fiber Lasers," IEEE Jnl. Qunt. Elect., v. 30, N. 1, Jan. 1994, pp. 200-208.
Tamura et al., "Self-starting additive pulse mode-locked erbium fibre ring laser," Elect. Lett., v. 28, n. 24, Nov. 19, 1992, pp. 2226-2227.
Tamura et al., "Unidirectional ring resonators for self-starting passively mode-locked lasers," Opt. Lett. v. 18, N. 3, Feb. 1, 1993, pp. 220-222.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Stretched-pulse fiber laser does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stretched-pulse fiber laser, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stretched-pulse fiber laser will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-634869

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.