• Technical Conference:  04 – 09 May 2025
  • The CLEO Hub: 06 – 08 May 2025

Conference Archives

#
Conference
Date
Location
Archive
44 CLEO 5 May -
10 May 2024
Charlotte, North Carolina, USA

CLEO:2024 Program Archive

CLEO: Fundamental Science Papers

CLEO: Science and Innovations Conference Papers

CLEO: Applications and Technology Conference Papers

43 CLEO 7 May -
12 May 2023
San Jose, California, USA

CLEO:2023 Program Archive

CLEO – Fundamental Science Conference Papers

CLEO – Science and Innovations Conference Papers

CLEO – Applications & Technology Conference Papers
 

42 CLEO 15 May -
20 May 2022
San Jose, California, USA

CLEO:2022 Program Archive

CLEO:QELS—Fundamental Science 2022 Conference Papers
CLEO:Science & Innovations 2022 Conference Papers
CLEO:Applications & Technology 2022 Conference Papers

41 CLEO 9 May -
14 May 2021
Virtual

CLEO:2021 Program Archive

CLEO:QELS—Fundamental Science 2021 Conference Papers
CLEO:Science & Innovations 2021 Conference Papers
CLEO:Applications & Technology 2021 Conference Papers

CLEO:QELS—Fundamental Science 2021 Videos
CLEO:Science & Innovations 2021 Videos
CLEO:Applications & Technology 2021 Videos

40 CLEO 11 May -
15 May 2020
Virtual

CLEO:2020 Program Archive

CLEO:QELS—Fundamental Science 2020 Conference Papers
CLEO:Science & Innovations 2020 Conference Papers
CLEO:Applications & Technology 2020 Conference Papers

CLEO:QELS—Fundamental Science 2020 Videos
CLEO:Science & Innovations 2020 Videos
CLEO:Applications & Technology 2020 Videos

39 CLEO 5 May -
10 May 2019
San Jose, CA

CLEO:2019 Program Archive
CLEO:QELS—Fundamental Science 2019 Conference Papers
CLEO:Science & Innovations 2019 Conference Papers
CLEO:Applications & Technology 2019 Conference Papers

38 CLEO 13 May -
18 May 2018
San Jose, CA

CLEO:2018 Program Archive
CLEO:QELS—Fundamental Science 2018 Conference Papers
CLEO:Science & Innovations 2018 Conference Papers
CLEO:Applications & Technology 2018 Conference Papers

37 CLEO 14 May -
19 May 2017
San Jose, CA

CLEO:2017 Program Archive
CLEO:QELS—Fundamental Science 2017 Conference Papers
CLEO:Science & Innovations 2017 Conference Papers
CLEO:Applications & Technology 2017 Conference Papers

36 CLEO 5 June -
10 June 2016
San Jose, CA

CLEO:2016 Program Archive
CLEO:QELS—Fundamental Science 2016 Conference Papers
CLEO:Science & Innovations 2016 Conference Papers
CLEO:Applications & Technology 2016 Conference Papers

35 CLEO 10 May -
15 May 2015
San Jose, CA

CLEO:2015 Program Archive
CLEO:QELS—Fundamental Science 2015 Conference Papers
CLEO:Science & Innovations 2015 Conference Papers
CLEO:Applications & Technology 2015 Conference Papers
CLEO:2015 Photographs

34 CLEO 8 June -
13 June 2014
San Jose, CA

CLEO:2014 Program Archive
CLEO:QELS—Fundamental Science 2014 Conference Papers
CLEO:Science & Innovations 2014 Conference Papers
CLEO:Applications & Technology 2014 Conference Papers
CLEO:2014 Photographs

33 CLEO 4 June -
14 June 2013
San Jose, CA

CLEO:2013 Program Archive
CLEO:QELS—Fundamental Science 2013 Conference Papers
CLEO:Science & Innovations 2013 Conference Papers
CLEO:Applications & Technology 2013 Conference Papers
CLEO:2013 Conference Photographs

32 CLEO 6 May -
11 May 2012
San Jose, CA

CLEO:2012 Program Archive
CLEO:Science & Innovations 2012 Conference Papers
CLEO:QELS—Fundamental Science 2012 Conference Papers
CLEO:Applications & Technology 2012 Conference Papers
CLEO:2012 Conference Photographs

31 CLEO 1 May -
6 May 2011
Baltimore, MD

CLEO:2011 Program Archive
CLEO:Science & Innovations 2011 Conference Papers
CLEO:QELS—Fundamental Science 2011 Conference Papers
CLEO:Applications & Technology 2011
CLEO: 2011 Conference Photographs

30 CLEO/QELS 16 May -
21 May 2010
San Jose, CA

CLEO/QELS 2010 Program Archive
CLEO 2010 Conference Papers
QELS 2010 Conference Papers
CLEO:Applications 2010 Conference Papers
CLEO/QELS 2010 Conference Photographs

29 CLEO/IQEC/PhAST 1 June -
6 June 2009
Baltimore, MD

CLEO/IQEC 2009 Program Archive
CLEO 2009 Conference Papers
IQEC 2009 Conference Papers
CLEO/IQEC 2009 Conference Photographs

28 CLEO/QELS/PhAST 4 May -
9 May 2008
San Jose, CA

CLEO/QELS/PhAST 2008 Program Archive
CLEO 2008 Conference Papers
QELS 2008 Conference Papers
CLEO/QELS:2008 Conference Photographs

27 CLEO/QELS/PhAST 6 May -
11 May 2007
Baltimore, MD

CLEO/QELS/PhAST 2007 Program Archive
CLEO 2007 Conference Papers
QELS 2007 Conference Papers
PhAST 2007 Conference Papers

26 CLEO/QELS/PhAST 21 May -
26 May 2006
Long Beach, CA

CLEO/QELS/PhAST 2006 Program Archive
CLEO 2006 Conference Papers
QELS 2006 Conference Papers
PhAST 2006 Conference Papers

25 CLEO/QELS/PhAST 22 May -
27 May 2005
Baltimore, MD

CLEO/QELS 2005 Program Archive
CLEO 2005 Conference Papers
QELS 2005 Conference Papers
PhAST 2005 Conference Papers

24 CLEO/IQEC/PhAST 18 May -
20 May 2004
San Francisco, CA

CLEO/IQEC 2004 Program Archive
CLEO 2004 Conference Papers
IQEC 2004 Conference Papers
PhAST 2004 Conference Papers

23 CLEO/QELS 1 June -
6 June 2003
Baltimore, MD

CLEO/QELS 2003 Program Archive
CLEO 2003 Conference Papers
QELS 2003 Conference Papers

22 CLEO/QELS 19 May -
24 May 2002
Long Beach, CA

CLEO 2002 Conference Papers
QELS 2002 Conference Papers

21 CLEO/QELS 6 May -
11 May 2001
Baltimore, MD

CLEO 2001 Conference Papers
QELS 2001 Conference Papers

20 CLEO/QELS 7 May -
12 May 2000
San Francisco, CA

CLEO 2000 Conference Papers
QELS 2000 Conference Papers

19 CLEO/QELS 23 May -
28 May 1999
Baltimore, MD

CLEO 1999 Conference Papers
QELS 1999 Conference Papers

18 CLEO/IQEC 3 May -
8 May 1998
San Francisco, CA

CLEO 1998 Conference Papers
IQEC1998 Conference Papers

17 CLEO/QELS 18 May -
23 May 1997
Baltimore, MD

CLEO 1997 Conference Papers
QELS 1997 Conference Papers

16 CLEO/QELS 2 June -
7 June 1996
Anaheim, CA

CLEO 1996 Conference Papers
QELS 1996 Conference Papers

15 CLEO/QELS 21 May -
26 May 1995
Baltimore, MD

CLEO 1995 Conference Papers
QELS 1995 Conference Papers

14 CLEO/IQEC 8 May -
13 May 1994
Anaheim, CA

CLEO 1994 Conference Papers
IQEC 1994 Conference Papers

13 CLEO/QELS 2 May -
7 May 1993
Baltimore, MD

CLEO 1993 Conference Papers
QELS 1993 Conference Papers

12 CLEO/QELS 10 May -
15 May 1992
Anaheim, CA

CLEO 1992 Conference Papers
QELS 1992 Conference Papers

11 CLEO/QELS 12 May -
17 May 1991
Baltimore, MD

CLEO 1991 Conference Papers
QELS 1991 Conference Papers

10 CLEO/IQEC 21 May -
25 May 1990
Anaheim, CA

CLEO 1990 Conference Papers
IQEC 1990 Conference Papers

09 CLEO/QELS 24 April -
28 April 1989
Baltimore, MD

CLEO 1989 Conference Papers
QELS 1989 Conference Papers

08 CLEO 25 April -
28 April 1988
Anaheim, CA

CLEO 1988 Conference Papers

07 CLEO/IQEC 28 April -
30 April 1987
Baltimore, MD

CLEO 1987 Conference Papers
IQEC 1987 Conference Papers

06 CLEO/IQEC 9 June -
13 June 1986
San Francisco, CA

CLEO 1986 Conference Papers
IQEC 1986 Conference Papers

05 CLEO 21 May -
24 May 1985
Baltimore, MD

CLEO 1985 Conference Papers

04 CLEO/IQEC 19 June -
21 June 1984
Anaheim, CA

CLEO 1984 Conference Papers
IQEC 1984 Conference Papers

03 CLEO 17 May -
20 May 1983
Baltimore, MD

CLEO 1983 Conference Papers

02 CLEO/OFC 14 April -
16 April 1982
Phoenix, AZ

CLEO 1982 Conference Papers

01 CLEO 10 June -
12 June 1981
Washington, DC

CLEO 1981 Conference Papers

Previous History

CLEO (Conference on Lasers and Electro-Optics) was started in 1981 as an annual conference to combine CLEA (Conference on Laser Engineering and Applications) and CLEOS (Conference on Laser and Electro-Optical Systems)

 
Conference Name
Date
Location
Conference Name
Date
Location
CLEA 6 June – 9 June 1967 Washington, DC      
CLEA 26 May – 28 May 1969 Washington, DC      
CLEA 2 June – 4 June 1971 Washington, DC      
CLEA 30 May – 1 June 1973 Washington, DC      
CLEA 28 May – 30 May 1975 Washington, DC CLEOS 25 Feb – 27 Feb 1976 San Diego, CA
CLEA 1 June – 3 June 1977 Washington, DC CLEOS/ICF 7 Feb – 9 Feb 1978 San Diego, CA
CLEA 30 May – 1 June 1979 Washington, DC CLEOS 26 Feb – 28 Feb 1980 San Diego, CA

Part of the intent with the creation of the CLEO in 1981 was to always collocate IQEC (International Quantum Electronics Conference) with this conference when held in North America.  Until then, the IQEC conferences were organized independently by the physics and electrical engineering community. Conference proceedings for most IQEC conferences from 1984 can be found in the OSA Publishing Digital Library.

IQEC Series
Date
Location
1 14 – 16 September 1959 Shawanga Lodge, NY
2 23 – 25 March 1961 Berkeley, CA
3 11 – 15 February 1963 Paris, France
4 12 –15 April 1966 Phoenix, AZ
5 13 – 16 May 1968 Miami, FL
6 7 – 10 September 1970 Kyoto, Japan
7 8 – 11 May1972 Montreal, Canada
8 10 – 13 June 1974 San Francisco, CA
9 14 – 18 June 1976 Amsterdam, The Netherlands
10 29 May – 1 June 1978 Atlanta, GA
11 23 – 26 June 1980 Boston, MA
12 22 – 25 June 1982 Munich, Germany
13 18 – 21 June 1984 Anaheim, CA
14 9 – 13 June 1986 San Francisco, CA
15 27 April – 1 May 1987 Baltimore, MD
16 18 – 21 July 1988 Tokyo, Japan

QELS (Quantum Electronics and Laser Science Conference) was started in 1989 to have an annual quantum electronics conference collocate with CLEO and serve as the domestic IQEC on years that IQEC was held in other countries.

IQEC conferences continued to rotate around the world until 2013, while QELS was integrated into the overall CLEO event in 2010.