公开(公告)号：EP1969407A1

公开(公告)日：2008-09-17

申请号：EP05813929.6

申请日：2005-12-07

申请人： Pirelli & C. S.p.A.

发明人： PIRASTU, Alessio

IPC分类号： G02B6/42

CPC分类号： G02B6/4204 ,  G02B6/4234 ,  G02B6/4237

摘要： An optical assembly (1) is described, which comprises an optical package (3) having a wall (4a) with an aperture (5) and including a laser device (2) capable of emitting a laser beam (LB) through the aperture (5); and a collimator (7) including a sleeve (11) defining a first (8a) and a second end (8b), the collimator (7) including a terminating portion (10) of an optical fibre (F). In addition, the assembly (1) comprises a joint element (20) having a first (22a) and a second surface (22b), the first surface (22a) contacting the wall (4a) around the aperture (5) in a first contact area, and the second surface (22b) including a convex surface (23) contacting a portion of the surface of said sleeve (11) in correspondence of its first end (8a) in a second contact area, said convex surface (23) being at least partially inserted in said sleeve (11), so that said collimator (7) is aligned with respect to the laser beam (LB).

公开(公告)号：EP2186171A1

公开(公告)日：2010-05-19

申请号：EP07723882.2

申请日：2007-04-02

申请人： Pirelli & C. S.p.A.

发明人： ZAGO, Paolo ,  PIRASTU, Alessio

IPC分类号： H01S3/00

CPC分类号： H01S5/141 ,  H01S5/02284 ,  H01S5/02415 ,  H01S5/02438 ,  H01S5/0683 ,  H01S5/1085

摘要： An external cavity laser module (1) configured to emit an output optical beam (32) along a first output optical axis (X) is described. The laser module (1) comprises a gain medium (13) including a front facet (24) serving as an end mirror of the external cavity, a back facet (25) opposite to said front facet (24) and a bent waveguide. The gain medium (13) is configured to emit an intra-cavity optical beam into the external cavity along an intra-cavity optical axis (26) and to couple a front facet optical beam out of the external cavity from sthe front facet (24) along a second output optical axis (31 ), the intra-cavity optical axis (26) the said second output optical axis (31) forming a gain medium angle α not smaller than 10°. The laser module (1) also includes a multi-functional optical element (27) arranged outside the external cavity along the second output optical axis (31), the multi-functional optical element having an input facet (40) partially reflective so as to reflect a first portion of the front facet optical beam and an exit facet (41) through which the remaining portion of the front facet optical beam is transmitted, the transmitted portion giving rise to the output optical beam (32) along the first output optical axis (X), wherein the input (40) and exit facets (41) form an optical element angle γ comprised between 5° and 45° and wherein an incidence angle β between the second output optical axis (31) and an axis (N) normal to the input facet (40) is comprised between 30° and 70°.