Abstract
A Nd:YAG microchip laser array is developed and the spatial phase correlation among each the microchip laser is attained utilizing the Talbot effect in a three-mirror cavity configuration. The laterally coupled Nd:YAG microchip laser array produces a pair of spots with angular separation of λ/d in its far field, where d is the distance between the adjacent sources, corresponding to an out-of-phase spatial mode coupling. The far field spot size is reduced by a factor of 4.7 compared with that obtained by incoherent adding of the individual microchip lasers. Although an external mirror positioned at the 1/4 Talbot distance from the microchip lasers source is very effective to introduce the coherence among the laser chips, the present long Talbot distance limits the output laser power due to the extremely high diffraction loss in the auxiliary cavity. Smaller beam sizes for each microchip lasers will decrease the filling factor and improve the efficiency in the Talbot cavity.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Editors | A.V. Kudryashov, P. Galarneau |
| Pages | 31-38 |
| Number of pages | 8 |
| Volume | 3267 |
| DOIs | |
| Publication status | Published - 1998 |
| Externally published | Yes |
| Event | Laser Resonators - San Jose, CA, United States Duration: 1998 Jan 26 → 1998 Jan 27 |
Other
| Other | Laser Resonators |
|---|---|
| Country | United States |
| City | San Jose, CA |
| Period | 98/1/26 → 98/1/27 |
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Keywords
- Coherent laser array
- LD-pumped solid-state laser
- Microchip laser
- Phase-locked array
- Talbot effect
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
Cite this
Laterally coupled all solid-state laser array with a three-mirror cavity. / Kono, Y.; Nakanishi, A.; Kannari, Fumihiko.
Proceedings of SPIE - The International Society for Optical Engineering. ed. / A.V. Kudryashov; P. Galarneau. Vol. 3267 1998. p. 31-38.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Laterally coupled all solid-state laser array with a three-mirror cavity
AU - Kono, Y.
AU - Nakanishi, A.
AU - Kannari, Fumihiko
PY - 1998
Y1 - 1998
N2 - A Nd:YAG microchip laser array is developed and the spatial phase correlation among each the microchip laser is attained utilizing the Talbot effect in a three-mirror cavity configuration. The laterally coupled Nd:YAG microchip laser array produces a pair of spots with angular separation of λ/d in its far field, where d is the distance between the adjacent sources, corresponding to an out-of-phase spatial mode coupling. The far field spot size is reduced by a factor of 4.7 compared with that obtained by incoherent adding of the individual microchip lasers. Although an external mirror positioned at the 1/4 Talbot distance from the microchip lasers source is very effective to introduce the coherence among the laser chips, the present long Talbot distance limits the output laser power due to the extremely high diffraction loss in the auxiliary cavity. Smaller beam sizes for each microchip lasers will decrease the filling factor and improve the efficiency in the Talbot cavity.
AB - A Nd:YAG microchip laser array is developed and the spatial phase correlation among each the microchip laser is attained utilizing the Talbot effect in a three-mirror cavity configuration. The laterally coupled Nd:YAG microchip laser array produces a pair of spots with angular separation of λ/d in its far field, where d is the distance between the adjacent sources, corresponding to an out-of-phase spatial mode coupling. The far field spot size is reduced by a factor of 4.7 compared with that obtained by incoherent adding of the individual microchip lasers. Although an external mirror positioned at the 1/4 Talbot distance from the microchip lasers source is very effective to introduce the coherence among the laser chips, the present long Talbot distance limits the output laser power due to the extremely high diffraction loss in the auxiliary cavity. Smaller beam sizes for each microchip lasers will decrease the filling factor and improve the efficiency in the Talbot cavity.
KW - Coherent laser array
KW - LD-pumped solid-state laser
KW - Microchip laser
KW - Phase-locked array
KW - Talbot effect
UR - http://www.scopus.com/inward/record.url?scp=0032223927&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032223927&partnerID=8YFLogxK
U2 - 10.1117/12.308122
DO - 10.1117/12.308122
M3 - Conference contribution
AN - SCOPUS:0032223927
VL - 3267
SP - 31
EP - 38
BT - Proceedings of SPIE - The International Society for Optical Engineering
A2 - Kudryashov, A.V.
A2 - Galarneau, P.
ER -