公开(公告)号：JPH11195825A

公开(公告)日：1999-07-21

申请号：JP30289898

申请日：1998-10-23

Applicant: IMRA AMERICA INC

Inventor： YUZURU UEHARA ,  HOHEI W HIMENESU ,  STOCK MICHELLE L DR ,  FERMANN MARTIN E

IPC: H01S3/06 ,  G02B6/36 ,  H01S3/067

Abstract: PROBLEM TO BE SOLVED: To provide a small-sized laser device which has both a laser oscillator to output optical pulses and a laser amplifier. SOLUTION: A small-sized fiber laser device has a laser oscillator connected to a laser beam source 88 for generating optical pulses and a laser amplifier connected to the laser oscillator for amplifying the generated optical pulses. The laser oscillator has a first optical fiber 42 which connects bulk parts to the laser beam source 88, and the laser amplifier 14 has a second optical fiber 62 which connects the bulk parts to a laser light source 92. The first and the second fibers 42 and 62 are wound around a common holder. A fiber tray is connected to a fiber bench, and the bulk parts of the laser oscillator and the laser amplifier are attached to the fiber bench.

公开(公告)号：JPH10186424A

公开(公告)日：1998-07-14

申请号：JP34158497

申请日：1997-12-11

Applicant: IMRA AMERICA INC

Inventor： STOCK MICHELLE L DR ,  BENDETT MARK P DR ,  GALVANAUSKAS ALMANTAS DR ,  HARTER DONALD J DR ,  SUCHA GREGG D DR

IPC: G02F1/35 ,  G02B6/34 ,  H01S3/00 ,  H04B10/18

Abstract: PROBLEM TO BE SOLVED: To provide a means transmitting a very short light pulse with a high peak power to a required point in an optical device. SOLUTION: This very short light pulse transmitting device is provided with a pulse expander 20 receiving the super-short light pulse with a high peak power and expanding its pulse width and an optical fiber 30 transmitting the light pulse over a required distance and having the dispersion compensating other dispersion so that the light pulse is re-compressed sufficiently in the required point in the optical device 50. The pulse width of the light pulse is expanded by the expander 20, and a chirp light pulse with a low peak power is formed. Thus pulse whose dispersion is compensated while it is transmitted through the optical fiber 30, and is re-compressed by the optical fiber 30 or a compressor 40 to be transmitted to the optical device 50. Since the peak power in the optical fiber 30 is small, the super-short light pulse hardly by affected by a nonlinear effect.

公开(公告)号：DE19755361A1

公开(公告)日：1998-06-18

申请号：DE19755361

申请日：1997-12-12

Applicant: IMRA AMERICA INC

Inventor： STOCK MICHELLE L DR ,  BENDETT MARK P DR ,  GALVANAUSKAS ALMANTAS DR ,  HARTER DONALD J DR ,  SUCHA GREGG D DR

IPC: G02F1/35 ,  G02B6/34 ,  H01S3/00 ,  H04B10/18 ,  G02B6/10 ,  G08C23/06 ,  H02J17/00

Abstract: The feeder of ultra short optical pulses with high peak power to an optical apparatus (50) comprises a pulse expander (20), receiving the ultra short optical pulses and expanding the width of the impulses. An optical fibre (30) transmits the optical pulses over a required length. The fibre has a dispersion which compensates other dispersions appearing in the optical apparatus, and affecting the optical pulses for complete recompression of the pulses at a desired point of the optical apparatus. Preferably the expander is of the type containing a chirped optical fibre Bragg grid, a refraction grid pair, or a pair of prisms. The optical fibre is of the monomode type.