Hanne Ludvigsen

  • Tietotie 3

1992 …2018

Research output per year

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Research Output

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Working paper
2011

Extremely white supercontinuum generation in three-hole suspended-core fiber

Shavrin, I., Tvarozek, P., Koys, M., Schuster, K., Novotny, S. & Ludvigsen, H., 2011.

Research output: Working paperProfessional

1 Citation (Scopus)
2009

Scanning white light interferometry with supercontinuum source

Hanhijärvi, K., Kassamakov, I., Abbadi, I., Aaltonen, J., Ludvigsen, H. & Haeggström, E., 2009, Espoo, (XLIII Annual Conference of the Finnish Physical Society, Espoo March 12-14.2009).

Research output: Working paperProfessional

2005

Dual-Wavelength Pumped Supercontinuum Sources

Räikkönen, E., Buchter, S., Kaivola, M. & Ludvigsen, H., 2005, Espoo, p. 383, (The XXXIX Annual Conference of the Finnish Physical Society, March 17-19, 2005, Espoo, Finland).

Research output: Working paperProfessional

Hollow-core photonic crystal fiber with square lattice

Buczynski, R., Ritari, T., Szarniak, P., Kujawa, I., Ludvigsen, H. & Stepien, R., 2005, Poland, p. 5950-42, (SPIE Europe, Warsaw, Poland, 28 August-2 September 2005).

Research output: Working paperProfessional

5 Citations (Scopus)

Uncertainty contributions related to dispersion and power measurement in determination of fiber nonlinearity using continuous-wave self-phase modulation

Lamminpää, A., Niemi, T., Envall, J., Ludvigsen, H., Marttila, P. & Ikonen, E., 2005, p. 5950-29, (7th Optical Fibre Measurement Conference, Teddington, UK, 2005).

Research output: Working paperProfessional

2004

Miniature supercontinuum laser sources

Buchter, S., Räikkönen, E., Kaivola, M. & Ludvigsen, H., 2004, Turku, (Optics Days 2004, Turku, Finland, 6-7.5.2004).

Research output: Working paperProfessional

2002

Supercontinuum generation, photonic crystal fiber

Lehtonen, M., Genty, G., Kaivola, M., Jensen, J. R. & Ludvigsen, H., 2002, p. -, (XXXVI Annual Conference of the Finnish Physical Society, Joensuu, Finland, March 14-16, 2002).

Research output: Working paperProfessional

3186 Citations (Scopus)

Wavelength reference for optical telecommunications based on a tunable silicon etalon

Tuominen, J., Niemi, T., Heimala, P. & Ludvigsen, H., 2002, p. 72, (XXXVI Annual Conference of the Finnish Physical Society, Joensuu, Finland, March 14-16, 2002).

Research output: Working paperProfessional

2000

A tunable micro-filter for simultaneous wavelength monitoring and spectral filtering of a DWDM transmitter

Uusimaa, M., Niemi, T., Tammela, S. & Ludvigsen, H., 2000, p. 199, (Northern Optics 2000, Uppsala, Sweden, June 6-8, 2000).

Research output: Working paperProfessional

Characterization of dense group delay ripple using phase shift method: effect of modulation frequency

Niemi, T., Uusimaa, M., Genty, G. & Ludvigsen, H., 2000, p. 163, (Northern Optics 2000, Uppsala, Sweden, June 6-8, 2000).

Research output: Working paperProfessional

Measurement of linewidth variation within one external cavity mode of a grating-cavity laser

Genty, G., Kaivola, M. & Ludvigsen, H., 2000, p. 570-571, (Conference on Precision Electromagnetic Measurements CPEM'00, Sydney, Australia, May 14-19, 2000).

Research output: Working paperProfessional

1999

An absolute frequency reference for WDM communication systems

Merimaa, M., Casado, J., Niemi, T. & Ludvigsen, H., 1999, p. 16, (Finnish Optics Day, Joensuu, Finland, April 23.-24, 1999).

Research output: Working paperProfessional

Real-time frequency chirp measurements of optical signals

Niemi, T., Tammela, S. & Ludvigsen, H., 1999, p. paper 2.11, (XXXIII Annual Conference of the Finnish Physical Society, Turku, Finland, March 4-6, 1999).

Research output: Working paperProfessional

Using dispersion compensation to improve the performance of fiber optic CATV links

Niemi, T., Genty, G., Tammela, S. & Ludvigsen, H., 1999, p. 20, (Finnish Optics Day, Joensuu, Finland, April 23-24, 1999).

Research output: Working paperProfessional

1998

Analysis of different phase noise contributions to the laser linewidth of a DFB laser

Tossavainen, M., Kaivola, M. & Ludvigsen, H., 1998, p. 52, (Finnish Optics Day, Oulu, Finland, 24.-25.4.1998).

Research output: Working paperProfessional

Linewidth studies of an external cavity diode lasers

Gröhn, A., Talvitie, H., Kaivola, M. & Ludvigsen, H., 1998, p. paper 4.11, (The XXXI Annual Conference of the Finnish Physical Society, Tampere, Finland, 19.-21.3.1998).

Research output: Working paperProfessional

New device for measurement of time-resolved frequency chirp in modulated laser diodes

Niemi, T., Tammela, S., Kajava, T., Kaivola, M. & Ludvigsen, H., 1998, p. 35, (2nd Annual Meeting of the Finnish Optical Society, Oulu, 24-25.4.1998).

Research output: Working paperProfessional

Self-homodyne linewidth measurements using a short delay line

Ludvigsen, H., Tossavainen, M. & Kaivola, M., 1998, p. 205, (European Conference on Laser and Electro-Optics CLEO'98, Glasgow, Scotland, 14.-18.9.1998).

Research output: Working paperProfessional

Studies of the linewidth of an external cavity laser

Gröhn, A., Talvitie, H., Kaivola, M. & Ludvigsen, H., 1998, p. 4, (XXXII Annual Conference of the Finnish Physical Society, Tampere, 19-21.3.1998).

Research output: Working paperProfessional

Tunable Fabry-Perot micro-filters for telecommunication system diagnostics

Kajava, T., Kaivola, M., Ludvigsen, H., Niemi, T. & Tammela, S., 1998, p. 324, (European Conference on Laser and Electro-Optics CLEO'98, Glasgow,Scotland, 14.-18.9.1998).

Research output: Working paperProfessional

1 Citation (Scopus)

Tunable microfilters for diagnostic purposes in wideband optical telecommunication systems

Kajava, T., Niemi, T., Ludvigsen, H., Kaivola, M. & Tammela, S., 1998, p. paper 4.12, (The XXXI Annual Conference of the Finnish Physical Society,Tampere, Finland, 19.-21.3.1998).

Research output: Working paperProfessional

Tunable Micro Filters for Diagnostic Purposes in Wideband Optical Telecommunication Systems

Kajava, T., Niemi, T., Ludvigsen, H., Kaivola, M. & Tammela, S., 1998, Tampere, p. 4, (XXXII Annual Conference of the Finnish Physical Society, Tampere, 19-21.3.1998).

Research output: Working paperProfessional

Tunable micro-filters for diagnostic purposes in wide-band optical telecommunication systems

Kajava, T., Niemi, T., Ludvigsen, H., Kaivola, M. & Tammela, S., 1998, p. 4, (XXXII Annual Conference of the Finnish Physical Society, Tampere, 19-21.3.1998).

Research output: Working paperProfessional

1997

1/f noise in self-homodyne/heterodyne laser linewidth measurements

Tossavainen, M., Kokkonen, J., Kaivola, M. & Ludvigsen, H., 1997, p. paper 7:36, (XXXI Annual Conference of the Finnish Physical Society, Helsinki, Finland, March 13-15,1997).

Research output: Working paperProfessional

A device for measurements of time-resolved frequency chirp

Niemi, T., Söderlund, M., Tammela, S., Kajava, T., Kaivola, M. & Ludvigsen, H., 1997, p. 174-177, (The 4th Optical Fibre Measurement Conference (OFMC'97), Teddington, UK, September 29-October 1, 1997).

Research output: Working paperProfessional

A Device for Time-Resolved Frequency Chirp Measurements

Niemi, T., Söderlund, M., Tammela, S., Kajava, T., Kaivola, M. & Ludvigsen, H., 1997, Teddington, UK, p. 174-177, (Optical Fiber Measurement Conference OMFC'97).

Research output: Working paperProfessional

Annual report 1996

Ludvigsen, H. & Nyberg, H., 1997, Espoo, p. 38, (Metrology Research Institute Report; no. 9/97).

Research output: Working paperProfessional

Delayed self-homodyne linewidth measurements with a short delay fiber

Tossavainen, M., Kokkonen, J., Kaivola, M. & Ludvigsen, H., 1997, p. paper 43, (Optics Day '97, Tampere, Finland, February 21, 1997).

Research output: Working paperProfessional

1996

Annual report 1995

Ludvigsen, H., 1996, Espoo, p. 33, (Laboratory of Metrology and Metrology Research Institute Report; no. 7/96).

Research output: Working paperProfessional

Coherent transient effects of laser-cooled and trapped atoms

Pietiläinen, A., Ludvigsen, H., Talvitie, H. & Ikonen, E., 1996, p. 58, (European Conference on Quantum Electronics EQEC'96, Hamburg, Germany, September 8-13, 1996).

Research output: Working paperProfessional

Observation of coherent transient effects in a magneto-optical trap

Pietiläinen, A., Ludvigsen, H., Talvitie, H. & Ikonen, E., 1996, Espoo, p. 5, (Metrology Research Institute Report; no. 8/96).

Research output: Working paperProfessional

Observation of coherent transient effects of laser-cooled and trapped atoms

Talvitie, H., Pietiläinen, A., Ludvigsen, H. & Ikonen, E., 1996, p. paper 8:19, (The XXX Annual Conference of the Finnish Physical Society, Helsinki, March 21-23, 1996).

Research output: Working paperProfessional

Self-homodyne laser linewidth measurements

Ludvigsen, H., Kokkonen, J., Tossavainen, M. & Kaivola, M., 1996, p. 186, (European Conference on Lasers and Electro-Optics CLEO/Europe'96, Hamburg, Germany, September 8-13, 1996).

Research output: Working paperProfessional

1995

Annual report 1994

Ludvigsen, H., 1995, Espoo, p. 29, (Metrology Research Institute Report; no. 6/95).

Research output: Working paperProfessional

Quality manual of luminous intensity laboratory

Fagerlund, H. & Ludvigsen, H., 1995, Espoo, p. 34, (Quality Manual).

Research output: Working paperProfessional

Quality Manual of Optical Power Laboratory

Kärhä, P., Lassila, A. & Ludvigsen, H., 1995, Espoo, p. 22, (Quality Manual).

Research output: Working paperProfessional

1994

Frequency Stabilization of Diode Lasers for Use in Optical Metrology

Ludvigsen, H., 1994, Espoo, p. 67.

Research output: Working paperProfessional

Measurements of Laser-cooled and Trapped Rubidium Atoms

Pietiläinen, A., Äijälä, A., Ludvigsen, H., Talvitie, H. & Ikonen, E., 1994, p. paper 10:9, (The XXVIII Annual Conference of the Finnish Physical Society, Järvenpää, March 17-19, 1994).

Research output: Working paperProfessional

New Method for Homodyne Laser Linewidth Measurements with a Short Delay Fiber

Ludvigsen, H. & Bødtker, E., 1994, Espoo, p. 4, (Metrology Research Institute Report; no. 4/94).

Research output: Working paperProfessional

8 Citations (Scopus)

Quality Manual of Optical Frequency Standard Laboratory

Ludvigsen, H., Hu, J. & Ahola, T., 1994, Espoo, p. 22, (Quality Manual).

Research output: Working paperProfessional

Quality Manual of Reference Spectrometer Laboratory

Ludvigsen, H. & Manoocheri, F., 1994, Espoo, p. 24, (Quality Manual).

Research output: Working paperProfessional

1992

Frequency Stabilization of a GaAlAs Laser to the Rubidium D2 Absorption Line

Ludvigsen, H., Holmlund, C. & Ikonen, E., 1992, Espoo, p. 19, (The XXVI Annual Conference of the Finnish Physical Society, Lahti, 1992).

Research output: Working paperProfessional